thuyet minh chien.docx
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TRNG I HC S PHM K THUT CNG HO X HI CH NGHA VIT NAMTHNH PH H CH MINHc lp T do Hnh PhcKHOA XY DNG & C HC NG DNG NHIM V N TT NGHIPSinh vin: NGUYN VN CHINMSSV:10114010Khoa: Xy Dng & C Hc ng Dng Ngnh: Xy Dng Dn Dng & Cng NghipTn ti: Chung c AN PH1. S liu ban u H s kin trc ( chnh sa cc kch thc theo GVHD).2. Ni dung cc phn hc l thuyt v tnh ton a. Kin trc Th hin li cc bn v theo kin trc mi.b. Kt cu Tnh ton, thit k 2 phng n sn tng in hnh ( sn phng, sn dm BTCT). Tnh ton, thit k cu thang b v b nc mi. M hnh, tinh toan, thit k kt cu khung truc 2, trc C. Tinh toan, thit k kt cu vach BTCT (pier v spandrel)c. Nn mng Tnh ton,thit k kt cu mng cc p. Tnh ton ,thit k kt cu mng cc ly tm ng sut trc. Tnh ton, thit k kt cu mng cc khoan nhi. So snh la chn phng n mng hp l. M phng xc nh sc chu ti ca cc bng phn mm plaxis 3D foundation.3. Thuyt minh v bn v 01 Thuyt minh v 01 Ph lc 22 bn v A1 (04 Kin trc, 13 Kt cu, 5 Nn mng)4. Cn b hng dn: ThS. L PHNG5. Ngy giao nhim v: 24-02-20146. Ngy hon thnh nhim v : 11-06-2014
Xc nhn ca GVHDTp.HCM ngy thng nm.Xc nhn ca BCN Khoa
Th.S L PhngLI CM N n tt nghip l mn hc nh du s kt thc ca mt qu trnh hc tp v nghin cu ca sinh vin ti ging ng i hc. y cng l mn hc nhm gip cho sinh vin tng hp tt c cc kin thc tip thu c trong qu trnh hc tp v em p dng vo thit k cng trnh thc t. Hn na, n tt nghip cng c xem nh l mt cng trnh u tay ca sinh vin ngnh Xy dng, gip cho sinh vin lm quen vi cng tc thit k mt cng trnh thc t t cc l thuyt tnh ton c hc trc y.Vi tm lng bit n v trn trng nht, em xin cm n cc thy c khoa Xy Dng v C Hc ng Dng ch dy em nhng kin thc chuyn mn v kinh nghim thc t cn thit phc v cho qu trnh thc hin lun vn cng nh qu trnh lm vic sau ny. c bit em xin chn thnh cm n thy L PHNG hng dn ch bo tn tnh nhng kin thc chuyn mn cn thit gip em hon thnh lun vn ng thi hn v nhim v c giao.Ti xin chn thnh cm n nhng ngi bn cng st cnh bn ti trong nhng ngy thng kh khn di mi trng i hc, ng gp nhng kin thc v nhng phng n qu bu trong vic thit k cng trnh trong lun vn ny.Cui cng ti xin cm n gia nh v ngi thn to nhng iu kin v vt cht cng nh tinh thn tt nht gip ti hon thnh lun vn ny.Vic gp phi sai st vng mc trong thit k u tay l iu khng th trnh khi. tr thnh ngi k s thc th, em cn phi c gng hc hi nhiu hn na. Knh mong thy c ch bo nhng khim khuyt, sai st em c th hon thin hn kin thc ca mnh. Em xin chn thnh cm n.Knh chc qy Thy C v cc bn di do sc khe ! Tp. H Ch Minh, thng 06 nm 2014Sinh vin thc hin
Nguyn Vn Chin
LI M UNgy nay, s pht trin v hi nhp ca t nc khng ngng t ra nhng yu cu mi cho s pht trin kinh t x hi v xy dng c s h tng. c bit trong nhng nm gn y, cng vi s khng ngng gia tng dn s, nhu cu nng cao mc sng, s pht trin cng ngh, k thut xy dngcc chung c cao tng xut hin vi mt ngy cng gia tng. T , c th thy rng vic tp trung xy dng, nng cp c s h tng phc v nhu cu sng v sinh hot cho ngi dn tr thnh mt nhim v cp bch, v v cng cn thit. chun b hnh trang tht tt cho bn thn mnh trc khi tham gia gp sc xy dng nn cc cng trnh thc t, lun vn tt nghip ti Chung c AN PH chnh l c s em h thng, cng c v hon thin phn no kin thc ca mnh. Lun vn gm 7 chng, bao hm hu ht cc kin thc m em c hc ti trng i hc. c c thnh qu nh hm nay, mt ln na, em xin php c gi li cm n n tt c cc Thy C rt nhiu. Tp.H Ch Minh, thng 06 nm 2014Sinh vin
Nguyn Vn Chin
MC LC
CHNG 1.TNG QUAN V KIN TRC11.1.Gii thiu chung v cng trnh11.2.Gii php kin trc11.2.1.Mt bng v phn khu chc nng11.2.2.Mt ng21.2.3.H thng giao thng51.3.c im kh hu tphcm51.3.1.Ma ma51.3.2.Ma kh51.3.3.Gi51.4.Gii php k thut51.4.1.H thng in51.4.2.H thng cung cp nc61.4.3.H thng thot nc61.4.3.1.Thot nc sinh hot61.4.3.2.Thot nc ma61.4.4.H thng thng gi v chiu sng61.4.5.An ton phng chy, cha chy v thot him71.4.6.H thng khc71.4.6.1.H thng thng tin71.4.6.2.H thng chng st7CHNG 2.TIU CHUN V L THUYT TNH TON82.1.C s thc hin82.1.1.Tiu chun kin trc82.1.2.Tiu chun kt cu82.2.Vt liu s dng82.2.1.B tng92.2.2.Ct thp92.3.Cc d liu tnh ton92.3.1.Ti trng ng92.3.2.Ti trng ngang112.4.Phng n thit k kt cu122.4.1.Phng n sn122.4.1.1.Phng n 1: S dng phng n sn dm ton khi122.4.1.2.Phng n 2: S dng phng n sn phng ton khi122.4.2.Phng n cu thang122.4.3.Phng n b nc mi132.4.4.Phng n kt cu khung b tng ct thp132.4.5.Phng n kt cu mng b tng ct thp132.4.5.1.Phng n 1 : S dng phng n mng cc khoan nhi132.4.5.2.Phng n 2: S dng phng n mng cc p thng132.4.5.3.Phng n 3: S dng phng n mng cc p ly tm ST132.5.Phng php tnh ton142.5.1.Cc gi thit tnh ton nh cao tng142.5.2.Lp s tnh142.5.3.Xc nh ti trng tc dng142.5.4.Xc nh ni lc142.5.4.1.M hnh lin tc thun tu142.5.4.2.M hnh ri rc - lin tc142.5.4.3.M hnh ri rc (Phng php phn t hu hn)142.5.5.T hp ni lc152.5.6.Tnh ton kt cu b tng ct thp theo ttgh I v ttgh II152.5.7.Nguyn tc tnh ton ti trng tc dng15CHNG 3.TNH TON SN TNG IN HNH17PHNG N 1 : THIT K PHNG N SN DM173.1.S b chiu dy tit din dm sn173.1.1.Chn s b tit din173.1.2.Chn s b tit din dm173.1.3.Nhp tnh ton cc bn183.2.Ti trng tc dng ln sn193.2.1.Tnh ti193.2.1.1.Trng lng bn thn193.2.1.2.Trng lng tng trn sn213.2.2.Hot ti223.3.Thit k sn in hnh bng phng php bng tra223.3.1.Nguyn l tnh ton223.3.1.1.Lin kt ca bn223.3.1.2.Phn li cc bn233.3.2.Tnh ton bn 2 phng233.3.3.Tnh sn loi bn dm253.3.4.Tnh ton b tr ct thp263.4.Kim tra theo trng thi gii hn II323.4.1.Tnh vng f1 tc dng ngn hn ca ton b ti trng343.4.2.Tnh vng f2 tc dng ngn hn ca ti trng di hn353.4.3.Tnh vng f3 tc dng di hn ca ti trng di hn363.5.Thit k sn in hnh bng phng php phn t hu han373.5.1.M hinh kt cu373.5.2.Tinh thep san41PHNG N 2 : THIT K PHNG N SN PHNG433.6.Ti trng433.6.1.Cc lp cu to sn433.6.2.Ti trng thng xuyn do tng433.6.3.Hot ti sn443.7.Phng php thit k trc tip443.7.1.C s l thuyt443.7.2.Chia cc di tnh ton nh sau463.7.2.1.Momen theo phng OX463.7.2.2.Momen theo phng OY473.8.Phng phap phn t hu han483.9.So sanh 2 phng phap xac inh ni lc513.10.Tinh thep san513.11.Kim tra xuyn thung573.12.Kim tra chuyn vi san583.13.So sanh hai phng an58CHNG 4.TINH TOAN CU THANG604.1.Tng quan604.2.Cac thng s c ban604.3.Tai trong tac dung ln ban thang614.3.1.Tinh tai tac dung ln ban thang614.3.1.1.Ban chiu nghi va chiu ti614.3.1.2.Ban nghing624.3.2.Hoat tai tac dung ln ban thang634.3.3.Tng tai trong tac dung ln ban thang634.4.S lam vic va ni lc cua ban thang634.5.Tinh toan ni lc ban thang644.6.Tnh thp cho bn thang654.7.Tnh dm chiu ti (200x400)664.7.1.Ti trng tc dng664.7.2.Tinh ct thep cho dm cu thang674.7.2.1.Tinh ct thep doc cho gi674.7.2.2.Tinh ct thep doc cho nhip684.7.2.3.Tinh toan thep ai68CHNG 5.TINH TOAN B NC MAI705.1.Tng quan705.2.Tinh toan ban np715.2.1.Tit din s b715.2.1.1.Chiu day ban np725.2.1.2.S b tit din dm np725.2.2.Tai trong tac dung725.2.3.Tinh toan ni lc va ct thep cho ban np735.2.3.1.Ni lc ban np:735.2.3.2.Tinh toan ct thep735.2.4.Ct thep xung quanh l thm745.3.Tinh toan h dm np745.3.1.Ti trng745.3.1.1.Ti trng tc dng vo dm np DN1.745.3.1.2.Ti trng tc dng vo dm np DN2745.3.1.3.Ti trng tc dng vo dm np DN3755.3.2.Tnh ton thp765.3.2.1.Tnh ton thp dc cho dm np765.3.2.2.Tnh ton thp ngang775.4.Tnh ton thnh b785.4.1.Ti trng tc dng785.4.2.Tinh toan ni lc va ct thep cho ban thanh795.5.Tinh toan kt cu ay b nc mai795.5.1.Tit din s b795.5.1.1.Chiu day ban ay795.5.1.2.S b tit din dm ay805.5.2.Tinh toan ban ay805.5.2.1.Tai trong tac dung805.5.2.2.Tinh toan ni lc va b tri ct thep815.5.2.3.Kim tra vong cua ban ay h nc825.5.2.4.Kim tra nt cua ban ay h nc835.5.3.Tinh toan dm ay855.5.3.1.Tai trong tac dung ln dm DD1855.5.3.2.Tai trong tac dung ln dm DD2865.5.3.3.Tai trong tac dung ln dm DD3865.5.4.Tinh toan ct thep doc875.5.5.Tinh toan ct thep ngang885.6.Tnh ton ct895.7.Tnh ton theo phng php phn t hu hn (sap 2000)905.7.1.M hnh905.7.2.Ni lc bn y925.7.3.Tnh thp cho b nc935.7.3.1.Np b935.7.3.2.Thnh b935.7.3.3.y b945.8.So snh v kt lun95CHNG 6.TNH TON THIT K H KHUNG976.1.M hnh h khung976.1.1.Chn kch thc cc phn t ct976.1.2.Chn tit din vch cng996.2.Vt liu s dng996.3.Xc nh ti trng1006.3.1.Tnh ti1006.3.2.Hot ti1016.3.3.Tnh ton ti gi1016.3.3.1.Thnh phn gi tnh ca ti gi1016.3.3.2.Thnh phn ng ca ti gi1036.3.4.Ti trng ng t1106.3.4.1.Phng php phn tch ph phn ng1116.3.5.T hp ti trng1216.4.Tnh ton thit k khung trc 2 v trc C1246.4.1.C s tnh ton1246.4.1.1.Tnh ton thp dm1246.4.1.2.Tnh ton ct thp ct1276.4.1.3.Tnh ton vch cng1316.4.2.Kim tra kh nng chu lc ca ct, vch bng biu tng tc s dng phn mm CSICOL1356.4.3.Ni lc tnh ton1376.4.4.Tnh ton c th1386.4.4.1.Phn t ct1386.4.4.2.Phn t dm1406.4.4.3.Tnh vch pier 1 tng trt1446.4.5.Biu tng tc163CHNG 7.THIT K MNG CNG TRNH170A. D LIU THIT K1707.1.Tng quan v mng1707.2.a cht ca khu vc1707.3.Ti trng chn ct176B. PHNG N MNG CC P1767.4.Chn kch thc cc1767.5.Tnh sc chu ti ca cc1777.5.1.Tnh sc chu ti ca cc theo vt liu1777.5.2.Tnh sc chu ti theo t nn1787.5.2.1.Theo ch tiu c l ca t nn: ( ph lc A: TCXD 205 -1998)1787.5.2.2.Theo ch tiu cng t nn (Theo ph lc B TCXD 205-1998)1797.5.2.3.Theo kt qu th nghim xuyn ng (ph lc C TCXD 205-1998)1807.6.Tnh ton mng1827.6.1.Tnh ton mng M31827.6.2.Tnh mng li thang1917.7.Kim tra vn chuyn v cu lp209C. PHNG N CC LY TM2117.8.u, nhc im ca cc ly tm ng sut trc2117.8.1.u im2117.8.2.Nhc im2127.9.Cu to v phn loi cc b tng ly tm ng lc trc2127.9.1.Cu to ca cc ng b tng ly tm2127.9.1.1.Ct thp ng sut trc2127.9.1.2.B tng cng cao2127.9.2.Phn loi cc theo kh nng chu lc2137.10.Cu to cc ly tm trong tnh ton thit k mng2137.10.1.Vt liu lm cc2137.10.2.Tit din cc2147.11.Chn s b chiu su t mng v chiu cao i cc2147.12.Tnh ton sc chu ti ca cc2157.12.1.Sc chu ti cc theo vt liu2157.12.2.Sc chu ti theo t nn2167.12.2.1.Sc chu ti cc theo ch tiu c l t nn (ph lc A)2167.12.2.2.Sc chu ti cc theo ch tiu c l t nn (ph lc B)2187.12.2.3.Theo kt qu th nghim xuyn ng (ph lc C)2197.13.Tnh ton mng2207.13.1.Tnh ton mng M32207.13.2.Tnh mng li thang235D. PHNG N MNG CC KHOAN NHI2517.14.Tng quan v cc khoan nhi2517.15.Thit k cc2527.16.Tnh sc chu ti ca cc2527.16.1.Tnh sc chu ti cc theo vt liu2527.16.2.Sc chu ti cc theo t nn2537.16.2.1.Sc chu ti cc theo ph lc A2537.16.2.2.Tnh sc chu ti theo ph lc B2557.16.2.3.Tnh sc chu ti theo ph lc C2567.17.Tnh ton mng2587.17.1.Tnh ton mng M32587.17.2.Tnh mng li thang2637.18.So snh v la chn cc phng n mng2727.18.1.c im v phm vi p dng ca cc phng n mng2727.18.1.1.Cc p b tng ST2727.18.1.2.Cc khoan nhi2737.18.1.3.Cc p b tng thng2747.18.2.So snh v lng vt liu v gi thnh s dng cc2757.18.2.1.Cc p b tng ST2757.18.2.2.Cc khoan nhi2757.18.2.3.Cc p b tng thng2767.19.La chn phng n mng277E. S DNG PLAXIS TNH SC CHU TI CA CC LY TM NG LC TRC2777.20.Gii thiu d n2777.21.iu kin t nhin2777.22.Trnh t tnh ton2787.22.1.Kim tra cc chu ti ng2787.22.2.Kim tra cc chu ti ngang283
DANH MC CC BNG BIU
Bng 2.1 Trng lng bn thn cc lp cu to sn10Bng 2.2 Hot ti tc dng ln cc sn10Bang 2.3 Nhn dang iu kin t nn12Bng 3.1 Tnh ti tc dng ln sn19Bng 3.2 Ti trng ca tng tc dng ln cc sn21Bng 3.3 Hot ti tc dng ln cc sn22Bng 3.4 Tng ti trng tc dng ln cc sn24Bng 3.5 Tnh ni lc cc bn k24Bng 3.6 Tng ti trng tc dng ln cc bn dm26Bng 3.7 Thng k kt qu tnh ni lc ca cc bn dm26Bng 3.8 Kt qu tnh ton ct thp sn28Bng 3.9 Bng ly S v ng vi cc trng hp tnh ton33Bng 3.10 Bng gi tr Mmen nhp v gi theo phng X39Bng 3.11 Bng gi tr Mmen nhp v gi theo phng Y40Bng 3.12 Tnh thp sn theo phng php phn t hu hn42Bng 3.13 Tnh thp sn theo phng php tra bng42Bng 3.14 Cc lp cu to sn43Bng 3.15 Hot ti sn44Bng 3.16 H s phn phi m ment (ACI 318)45Bng 3.17 Kt qu tnh moment OX46Bng 3.18 Kt qu tnh moment OY47Bng 3.19 Bng gi tr Mmen nhp v gi theo phng X50Bng 3.20 Bng gi tr Mmen nhp v gi theo phng Y50Bng 3.21 Tnh thp sn53Bng 4.1 Tng quan cu thang60Bng 4.2 Trng lng cc lp cu to.62Bng 4.3 Kt qu tnh thp bn thang.66Bng 5.1 Ti trng tc dng ln bn np72Bng 5.2 Kt qu tnh ton ct thp bn np73Bng 5.3 Ct thp dm y b nc77Bng 5.4 Kt qu tnh ton ct thp thnh b.79Bng 5.5 Ct thp bn y b nc82Bng 5.6 Tra h s83Bng 5.7 Kim tra nt84Bng 5.7 Ct thp dm y b nc88Bng 5.8 Kt qu tnh thp np b93Bng 5.9 Bng tnh thp bn thnh94Bng 5.10 Bng tnh thp bn y95Bng 5.11 Bng so snh 2 phng php95Bng 6.1 S b tit din ct.98Bng 6.2 Tnh ti i vi sn tng in hnh100Bng 6.3 Tnh ti i vi sn v sinh100Bng 6.4 Hot ti c xc nh theo cng nng s dng ca sn101Bng 6.5 Kt qu tnh gi tnh theo phng X101Bng 6.6 Kt qu tnh gi tnh theo phng Y102Bng 6.7 Tn s dao ng ring103Bng 6.8 Khi lng tp trung theo cc tng104Bng 6.9 H s ng lc i105Bng 6.10 dch chuyn ngang t i ca trng tm phn cng trnh th j ng vi dng dao ng ring th i106Bng 6.11 H s p lc ng ca ti trng j107Bng 6.12 Theo phng X107Bng 6.13 Theo phng Y108Bng 6.14 Kt qu tnh ton gi ng tc dng vo cng trnh ng vi mode 1 theo phng X109Bng 6.15 Kt qu tnh ton gi ng tc dng vo cng trnh ng vi mode 3 theo phng Y109Bng 6.16 Bng tra thng s t nn113Bng 6.17 Kt qu tng cc trng lng hu hiu ca cc mode dao ng113Bng 6.18 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng114th 1114Bng 6.19 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng115th 7115Bng 6.20 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng115th 11115Bng 6.21 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng116th 14116Bng 6.22 Kt qu tinh ton ti trng ng t theo phng Y ng vi dng dao ng117th 3117Bng 6.23 Kt qu tinh ton ti trng ng t theo phng Y ng vi dng dao ng118th 5118Bng 6.24 Kt qu tinh ton ti trng ng t theo phng Y ng vi dng dao ng119th 9119Bng 6.25 Kt qu tinh ton ti trng ng t theo phng Y ng vi dng dao ng120th 12120Bng 6.26 Trng hp ti trng121Bng 6.27 T hp ti trng tiu chun121Bng 6.28 T hp ti trng tnh ton122Bng 6.29 Bng tnh thp dm147Bng 6.30 Bng tnh thp ct151Bng 6.31 Bng tnh thp PIER156Bng 6.32 Bng tnh thp SPANDREL S1161Bng 7.1: Bng kt qu thng k a cht173Bng 7.2 Phn lc u cc mng li thang204Bng 7.3 Kt qu ct thp i mng li thang209Bng 7.4 Momen dc theo thn cc231Bng 7.5 Lc ct dc theo cc232Bng 7.6 Gi tr p lc ngang233Bng 7.7 Phn lc u cc mng li thang246Bng 7.8 Kt qu ct thp i mng li thang251Bng 7.9 Phn lc u cc mng li thang269Bng 7.10 Kt qu ct thp i mng li thang272Bng 7.11 Bng tng hp thng s a cht dng trong tnh ton278
DANH MC CC HNH NH, BIU Hnh 2.1 Cc lp cu to sn10Hnh 3.1 Mt bng b tr dm sn tng in hnh18Hnh 3.2 Cc lp cu to sn19Hnh 3.3 Chia di sn theo phng X38Hinh 3.4 Chia di sn theo phng Y38Hnh 3.5 Biu mmen theo phng X38Hnh 3.6 Biu mmen theo phng Y39Hnh 3.7 vng sn42Hnh 3.8 Chia bn sn theo phng X44Hnh 3.9 V tr tit din nguy him45Hnh 3.10 Chia di sn theo phng X46Hnh 3.11 V tr tit din nguy him47Hnh 3.13 Chia di sn theo phng X49Hnh 3.14 Chia di sn theo phng Y49Hnh 3.15 Biu mmen theo phng X50Hnh 3.16 Biu mmen theo phng Y50Hnh 3.17. din tch truyn ti sn ln ct57Hnh 3.18.Chuyn v ca sn58Hnh 4.1 Mt bng cu thang60Hnh 4.2 Cu to bc thang.61Hnh 4.3 S tnh .64Hnh 4.4 Biu Mment .64Hnh 4.5 Phn lc ti v tr gi ta.65Hnh 4.6 S tnh v biu Mmen dm.67Hnh 5.1 Mt bng b tr b nc mi71Hnh 5.2 Mt bng b tr dm np72Hnh 5.3 Ti trng trong h dm np75Hnh 5.4 Lc ct trong h dm np75Hnh 5.5 Moment trong h dm np76Hnh 5.6 S tnh bn thnh79Hnh 5.7 Biu ni lc bn thnh79Hnh 5.8 Mt bng b tr dm y80Hnh 5.9 Ti trng trong h dm y86Hnh 5.10 Lc ct trong h dm y87Hnh 5.11 Moment un trong h dm y87Hnh 5.12 Phn lc chn ct89Hnh 5.13 M hnh 3D b nc90Hnh 5.14 Hot ti gn vo bn np90Hnh 5.15 Hot ti nc vo bn thnh90Hnh 5.16 Hot ti nc vo bn y91Hnh 5.17 Hot ti gi y gn vo bn thnh91Hnh 5.18 Hot ti gi ht gn vo bn thnh91Hnh 5.19 Moment M22 bn np92Hnh 5.20 Moment M22 bn y92Hnh 5.21 Moment M22 bn thnh92Hnh 6.1 M hnh 3D cng trnh.97Hnh 6.2 Mt bng kt cu tng in hnh trong ETABS99Hnh 6.3 Biu bao momen dm khung trc C124Hnh 6.4 Biu bao momen dm khung trc 2124Hnh 6.5 Tit din chu nn lch tm xin128Hnh 6.6 S ni lc tc dng ln vch phng131Hnh 6.7 Mt ct v mt ng vch132Hnh 6.8 Chn n v, tiu chun135Hnh 6.9 Khai bo vt liu136Hnh 6.10 Khai bo tit din, b tr thp cho ct136Hnh 6.11 Tit din ct trong CSICOL136Hnh 6.12 Biu tng tc ct trong CSICOL137Hnh 6.13 Tit din vch trong CSICOL137Hnh 6.14 Biu tng tc vch trong CSICOL137Hnh 6.15 Gi tr lc ct dm tng trt143Hnh 6.16 Gi tr lc ct vch Pier 1 tng Trt146Hnh 6.17 Biu tng tc ct 700x850 phng Y163Hnh 6.18 Biu tng tc ct 700x850 phng X163Hnh 6.19 Biu tng tc ct 3D trong CSICOL164Hnh 6.20 Biu tng tc vch pier 1 phng X164Hnh 6.21 Biu tng tc vch pier 1 theo phng Y165Hnh 6.22 Biu tng tc vch PIER 1 3D trong CSICOL165Hnh 6.23 Biu tng tc vch pier 2 phng X166Hnh 6.24 Biu tng tc vch pier 2 phng Y166Hnh 6.25 Biu tng tc vch pier 3 phng X167Hnh 6.26 Biu tng tc vch pier 3 phng Y167Hnh 6.27 Biu tng tc vch pier 5 phng X168Hnh 6.28 Biu tng tc vch pier 5 phng Y168Hnh 6.29 Biu tng tc vch spandrel tng 1 phng X169Hnh 6.30 Biu tng tc vch vch spandrel tng 1 phng Y169Hnh 7.1Mt bng nt tng BASE182Hnh 7.2 Cc di theo phng X203Hnh 7.3 Cc di theo phng Y203Hnh 7.4 Phn lc u cc mng li thang204Hnh 7.5 Biu momen (max) theo di ca phng X207Hnh 7.6 Biu momen (min) theo di ca phng X208Hnh 7.7 Biu momen (max) theo di ca phng Y208Hnh 7.8 Biu momen (min) theo di ca phng Y209Hnh7.9 Biu moment dc theo thn cc232Hnh 7.10 Biu lc ct dc theo cc233Hnh 7.11 Biu p lc ngang235Hnh 7.12 Cc di theo phng X245Hnh 7.13 Cc di theo phng Y245Hnh 7.14 Phn lc u cc mng li thang246Hnh 7.15 Biu momen (max) theo di ca phng X249Hnh 7.16 Biu momen (min) theo di ca phng X249Hnh 7.17 Biu momen (max) theo di ca phng Y250Hnh 7.18 Biu momen (min) theo di ca phng Y250Hnh 7.19 Mt ct cc khoan nhi253Hnh 7.20 Cc di theo phng X268Hnh 7.21 Cc di theo phng Y268Hnh 7.22 Phn lc u cc mng li thang269Hnh 7.23 Biu momen (max) theo di ca phng X270Hnh 7.24 Biu momen (min) theo di ca phng X270Hnh 7.25 Biu momen (max) theo di ca phng Y271Hnh 7.26 Biu momen (min) theo di ca phng Y271Hnh 7.27 Khai bo cc279Hnh 7.28 Khai bo hnh tr h khoan279Hnh 7.29 Nhp thng s t nn280Hnh 7.30 Nhp ti trng Point Load vo tm mng280Hnh 7.31 2D Mesh280Hnh 7.32 Kt cu mng281Hnh 7.33 3D Mesh281Hnh 7.34 Biu quan h chuyn v v phn trm ti trng u cc282Hnh 7.35 Nhp ti trng Point Load vo tm mng283Hnh 7.36 Chuyn v cc phng X283Hnh 7.37 Chuyn v cc phng Z284Hnh 7.38 Biu lc dc trong cc284Hnh 7.39 Biu lc ct Q12 trong cc285Hnh 7.40 Biu lc ct Q13 trong cc285Hnh 7.41 Biu momen M2 trong cc286Hnh 7.42 Biu momen M3 trong cc286Hnh 7.43 Chuyn v nn phng X, phng Z, phng Y287Hnh 7.44 Biu momen Mz288Hnh 7.45 Biu momen Mx289Hnh 7.46 Biu lc ct Qx289Hnh 7.47 Biu lc ct Qz290
TNG QUAN V KIN TRCGii thiu chung v cng trnh Trong nhng nm gn y, mc th ha ngy cng tng, mc sng v nhu cu ca ngi dn ngy cng c nng cao ko theo nhu cu n , ngh ngi, gii tr mt mc cao hn, tin nghi hn. Mt khc vi xu hng hi nhp, cng nghip ho hin i ho t nc ho nhp vi xu th pht trin ca thi i nn s u t xy dng cc cng trnh nh cao tng thay th cc cng trnh thp tng, cc khu dn c xung cp l rt cn thit. V vy chung c An Ph ra i nhm p ng nhu cu ca ngi dn cng nh thay i b mt cnh quan th tng xng vi tm vc ca mt t nc ang trn pht trin. Ta lc ti trung tm khu th mi Tho in, qun 2, cng trnh nm v tr thong v p, to im nhn ng thi to nn s hi ho hp l v hin i chotng th quy hoch khu dn c. Cng trnh nm trn trc ng giao thng chnh thun li cho vic cung cp vt t v giao thng ngoi cng trnh. H thng cp in, cp nc trong khu vc hon thin p ng tt cc yu cucho cng tc xy dng. Khu t xy dng cng trnh bng phng, hin trng khng c cng trnh c,khng c cng trnh ngm bn di t nn rt thun li cho cng vic thi cng v b tr tng bnh .Gii php kin trcMt bng v phn khu chc nng Mt bng cng trnh hnh ch nht, chiu di 53,5 m, chiu rng 28,0 m chim din tch t xy dng l 1498 m2. Cng trnh gm 18 tng v 1 tng hm. Ct 0,00 m c chn t ti mt sn tng trt. Mt t t nhin ti ct -1,50 m, mt sn tng hm ti ct -3,00 m. Chiu cao cng trnh l 65.9 m tnh t ct mt t t nhin. Tng hm: thang my b tr gia, ch u xe t xung quanh. Cc h thng k thut nh b cha nc sinh hot, trm bm, trm x l nc thi c b tr hp l gim ti thiu chiu di ng dn. Tng hm c b tr thm cc b phn k thut v in nh trm cao th, h th, phng qut gi. Tng trt, tng lng: dng lm siu th nhm phc v nhu cu mua bn, cc dch v gii tr... cho cc h gia nh cng nh nhu cu chung ca khu vc. Tng k thut: b tr cc phng tin k thut, iu ha, thit b thng tin Tng 1 16: b tr cc cn h phc v nhu cu .
Mt ngS dng, khai thc trit nt hin i vi ca knh ln, tng ngoi c hon thin bng sn nc.
H thng giao thng Giao thng ngang trong mi n nguyn l h thng hnh lang. H thng giao thng ng l thang b v thang my, bao gm 01 thang b, 03 thang my trong c 02 thang my chnh v 01 thang my ch hng v phc vy t. Thang my b tr chnh gia nh, cn h b tr xung quanh li phn cch bi hnh lang nn khong i li l ngn nht, rt tin li, hp l v bo m thng thong.c im kh hu tphcmc im kh hu thnh ph H Ch Minh c chia thnh hai ma r rt:Ma maT thng 5 n thng 11 c: Nhit trung bnh :25oC. Nhit thp nht :20oC. Nhit cao nht :36oC. Lng ma trung bnh :274.4 mm (thng 4). Lng ma cao nht :638 mm (thng 5).Ma kh Nhit trung bnh :27oC Nhit cao nht :40oCGi Thng thng trong ma kh :Gi ng Nam :chim 30% - 40% .Gi ng :chim 20% - 30% . Thng thng trong ma ma : Gi Ty Nam : chim 66%. Hng gi Ty Nam v ng Nam c vn tc trung bnh : 2,15 m/s. Gi thi mnh vo ma ma t thng 5 n thng 11 , ngoi ra cn c gi ng Bc thi nh. Khu vc thnh ph H Ch Minh rt t chu nh hng ca gi bo .Gii php k thutH thng in Cng trnh s dng in khu vc do thnh ph cung cp vi hin trng ngun in sn c. Ton b ng dy in c i ngm (c tin hnh lp t ng thi khi thi cng). H thng cp in chnh i trong cc hp k thut t ngm trong tng v phi bo m an ton khng i qua cc khu vc m t, to iu kin d dng khi cn sa cha. My pht in d phng c chn dng chung cho khi i c cng sut khong 450KVA cp in cho cc hng mc sau:in chiu sng + cm, my lnh t tng hm, tng trt, 1.n hnh lang, cu thang, chiu sng ngoi nh, sn thng.H thng cung cp ncNgun nc cp chnh cho cng trnh c ly t ng ng cp nc thuc h thng cp nc mng ngoi theo quy hoch cp nc tng th.ng knh ng cp chnh vo chung c l D65 vi ng h kiu cnh qut c ng knh D50.H thng thot ncThot nc sinh hot Nc bn sinh hat: c thu gom a v ng thot ng hp gen k thut xung tng trt ni v cc h ga xung quanh nh thi ra cng thi thnh ph. Nc thi phn: c thu v ng thot ng a xung trt vo b t hoi 3 ngn x l lng lc trc khi vo b x l tp trung sau cng t sch cho php thi vo h thng cng chung thnh ph.Thot nc ma Nc ma trn mi c thu gom v cc phu thu c cu chn rc D100,thng qua cc ng thot ng ton b nc ma trn mi c a xung trt, i ngm di t n cc h ga thu nc ma ngoi nh v c dn ra ngoi cng thi chung ca thnh ph. Ti dc xung tng hm b tr mng thu nc vo h thu nc ngn khng cho nc ma trn vo bn trong tng hm.H thng thng gi v chiu sng H thng lnh My lnh 02 cc ( Split type ) bt vch s dng cho khi cn h kt hp vi h thng qut trn, qut tng. Hng mc ny khng u t, ch i sn ng dy, ng ng n tng cn h to nh c chiu sng bng nh sng t nhin (thng qua cc ca s cc mt ca ta nh v hai l ly sng khi trung tm) v bng in. ti cc li i ln xung cu thang, hnh lang v nht l tng hm u c lp t thm n chiu sng. Thng gi: Cc khu vc c thng gi v ht hi nhn to qua h thng qut ly tm, qut hng trc v ng thng gi: Cc phng v sinh, nh bp trong cc cn h. Hnh lang, bi xe.. Phng my pht in d phng. Cc hng mc trn c tnh trong sut u t xy dng ca ta nh. C trang b h thng qut iu p thang b dng trong trng hp thot him khn cp.An ton phng chy, cha chy v thot him H thng phng chy, cha chy: ti mi tng u c trang b thit b cu ho t hnh lang. mi tng u c b tr mt ch t thit b cha chy( vi cha chy di khong 20m, bnh xt CO2. B cha nc trn mi khi cn th tham gia cha chy. Ngoi ra mi phng u c lp thit b t ng bo chy.H thng khcH thng thng tin H thng thng tin lin lc c lp t trc tuyn (cc cn h nhn in thoi t bn ngoi gi n khng cn qua tng i). H thng Angten truyn hnh c b tr 01 thit b thu sng trn mi sau khi qua thit b chia v n nh tn hiu c ni bng cp n tng cn h. Ngoi ra cc cn cn c lp h thng truyn hnh cp ( d kin mi h c t 2 3 v tr s dng truyn hnh ).H thng chng st Kim thu st l loi kim ch ng c bn knh bo v mc 3 khng nh hn 25m cao thp hn kim 6m. kim c gn gi bng ng st trng km c ng knh thay i t 34 n 49. Ty v tr thc t c th lp t cc b ging tr.
TIU CHUN V L THUYT TNH TONC s thc hin Cn c Ngh nh s 16/2005/N-CP, ngy 07/02/2005 ca Chnh Ph v qun l d n u t xy dng. Cn c ngh nh s 209/2004/N-CP, ngy 16/12/2004 v qun l cht lng cng trnh xy dng. Cn c thng t s 08/2005/TT-BXD, ngy 06/05/2005 ca B Xy Dng v thc hin Ngh nh s 16/2005/N-CP. Cn c vo cc s liu ghi nhn c ti hin trng v cc kt qu th nghim trong phng ca mu t nguyn dng, thnh lp bo co a cht cng trnh cho ton b khu vc xy dng. Cn c vn bn tha thun v kin trc qui hoch ca S Quy hoch Kin trc Thnh ph H Ch Minh. Cc tiu chun quy phm hin hnh ca Vit Nam :Tiu chun kin trc Quy chun xy dng Vit Nam. Tiu chun xy dng Vit Nam (TCXDVN 276-2003). Nhng d liu ca kin trc s.Tiu chun kt cu Ti trng v tc ng - Tiu chun thit k - TCVN 2737-2005 Kt cu b tng ct thp - Tiu chun thit k - TCVN 5574-2012 Nh cao tng. Thit k kt cu b tng ct thp ton khi - TCXD 198 :1997 Mng cc. Tiu chun thit k - TCXD 205 : 1998 Tiu chun thit k nn nh v cng trnh TCVN 9362-2012 Tiu chun thit k cng trnh chu ng t - TCXDVN 9386-2012Vt liu s dng Vt liu xy dng cn c cng cao, trng lng nh v kh nng chng chy tt. Nh cao tng thng c ti trng rt ln. Nu s dng cc loi vt liu trn to iu kin gim c ng k ti trng cho cng trnh, k c ti trng ng cng nh ti trng ngang do lc qun tnh. Vt liu c tnh bin dng cao: Kh nng bin dng do cao c th b sung cho tnh nng chu lc thp. Vt liu c tnh thoi bin thp: C tc dng tt khi chu tc dng ca ti trng lp li (ng t, gi bo). Vt liu c tnh lin khi cao: C tc dng trong trng hp ti trng c tnh cht lp li khng b tch ri cc b phn cng trnh. Vt liu c gi thnh hp l.=>Bi cc iu kin trn nn ti Vit Nam hay cc nc khc th vt liu BTCT hoc thp l cc loi vt liu ang c cc nh thit k s dng ph bin trong cc kt cu nh cao tng.B tng Btng dng trong nh cao tng c cp bn B25B60. Da theo c im ca cng trnh v kh nng ch to vt liu chn b tng phn thn v mng cp bn B20,B25 v B30 c cc s liu k thut nh sau: Trng lng ring: =25 kN/m3 B tng B25 (Mc 350) Cng chu nn tnh ton: Rb=14.5 (Mpa) Cng chu ko tnh ton: Rbt=1,05 (Mpa) M un n hi ban u: Eb=30 000 (Mpa) B tng B30 (Mc 400) Cng chu nn tnh ton: Rb=17 (Mpa) Cng chu ko tnh ton: Rbt=1,2(Mpa) M un n hi ban u: Eb=32500 (Mpa)Ct thp i vi ct thp < 10(mm) dng lm ct ai v ct thp sn loi AI: Cng chu nn tnh ton: Rsc =225 (Mpa) Cng chu ko tnh ton: Rs = 225 (Mpa) Cng chu ko ca ct thp ai, thp xin: Rsw= 175 (Mpa) M un n hi: Es=210000 (Mpa) i vi ct thp ct thp ct, vch, mng , cu thang dng loi AIII: Cng chu nn tnh ton: Rsc =365 Mpa Cng chu ko tnh ton: Rs = 365 Mpa Cng chu ko ca ct thp ai, thp xin: Rsw=290 Mpa M un n hi: Es=200000 Mpa Cc d liu tnh tonTi trng ng Tnh ti
Hnh 2.1 Cc lp cu to sn
Bng 2.1 Trng lng bn thn cc lp cu to snLoi snCu toTi tiu chun(daN/m2)HSVTTi tnh ton(daN/m2)
Phng ng Phng khch Snh Lgia Ban cng Hnh langLp gch hoa dy 10mmVa lt dy 20mman sn BTCT dy 100mmVa trt trn dy 15mmng ng thit b2000x0.01=201800x0.02=362500x0.10=2501800x0.015=2750 (daN/m2)1.11.31.11.31.12246.827535.155
Tng ti434
Sn v sinhLp gch nhm dy 10mmVa lt dy 20mmLp chng thm dy 30mmLp to dc 1% dy 30mman sn BTCT dy 100mmVa trt trn dy 15mmTi treo ng ng TBKT2000x0.01=201800x0.02=362000x0.03=601800x0.03=542500x0.10=2501800x0.015=2750 (daN/m2)1.11.31.31.31.11.31.1
2241.67870.227535.155
Tng ti576.9
Hot tiHot ti tnh ton tc dng ln sn v cu thang c tra bng 4.3 trong TCVN 2737-2005 ng vi tng phng nh sau :
Bng 2.2 Hot ti tc dng ln cc snLoi snTi tiu chun(daN/m2)H s vt tiTi tnh ton(daN/m2)
Phng ng, phng khch1501.3195
Snh, hnh lang3001.2360
Ban cng, lgia2001.2240
Sn v sinh1501.3195
Tng hm ( u xe)5001.2600
Tng trt ( thng mi)4001.2480
Tng mi751.397.5
Trong h s vt ti (tin cy i vi ti trng phn b u trn sn v cu thang ly bng 1.3 khi ti trng tiu chun nh hn 200 (daN/m2), bng 1.2 khi ti trng tiu chun bng hoc ln hn 200(daN/m2) trch theo TCVN 2737-1995.Ti trng ngang Ti trng giCng trnh c xy dng Qun 2, Tp.HCM nn vng gi l vng gi IIA v dng a hnh l a hnh A.Lc gi tnh c phn b theo din tch c tnh theo cng thc :W = WonckB (KN)Trong :W0 = 0.83 (KN/ m2) (tnh cho thnh ph HCM, thuc khu vc IIA).n =1,2 h s tin cyc :H s kh ng ; c = +0,8 : gi y ; c = -0,6 :gi htk : h s xt n s thay i p lc gi theo cao(tra bng 5 -TCVN 2737-2006, theo dng a hnh B)B : din tch n gi ca cc khung.B rng n gi theo phng trc Y: Tng 1 n 16 Lx=45.4m;B rng n gi theo phng trc X: Tng 1 n 16 Ly= 20.4m; Ti trng ng t.i vi nhng cng trinh nha cao tng, trong thit k xy dng nha thu ngoai vic tinh toan tai trong cua ban thn cng trinh (tai trong ng), con phai tinh toan hai loai tai trong na v cung quan trong la tai trong cua gio bao va tai trong ng t (tai trong ngang).y c xem nh la mt trong nhng yu cu bt buc khng th thiu va la yu cu quan trong nht khi thit k cac cng trinh cao tng. Do o, bt ky cng trinh xy dng nao nm vung co phn vung tac ng gio thi phai tinh toan tai trong gio, phn vung v ng t phai tinh toan tai trong ng t.Tinh toan lc ng t theo tiu chun TCXDVN 9386-2012 Thit k cng trinh chiu ng tXac inh ty s
Cn c vao phu luc I Bang phn vung gia tc nn theo ia danh hanh chinh, ta co:
Thanh ph H Ch Minh, thi: Trong o:agR la inh gia tc nn tham chiu trn nn loai D.g la gia tc trong trng: g = 9.81 (m/s2)Nhn dang iu kin t nn theo tac ng ng tCn c vao mt ct ia tng, cac s liu khao sat ia cht tai khu vc xy dng va iu kin t nn theo tac ng ng t trong quy inh tai iu 3.1.2 cua TCXDVN 9386-2012 nhn dang nn t tai khu vc xy dng cng trinh nay nh sau:
Bang 2.3 Nhn dang iu kin t nnLoai nn tSTB (s)TC (s)TD (s)
C1.150.20.62
Trong o:S la h s nn.TB (s) la gii han di cua chu ky, ng vi oan nm ngang cua ph phan ng gia tc.TC (s) la gii han trn cua chu ky, ng vi oan nm ngang cua ph phan ng gia tc.TD (s) la gia tri xac inh im bt u cua phn phan ng dich chuyn khng i trong ph phan ng.Phng n thit k kt cu Phng n snPhng n 1: S dng phng n sn dm ton khi Sn c chiu dy 150 mm . H dm chnh kch thc bx h=400x800 mm. H dm ph kch thc bx h=150x350 mm. S dng ct thp chu lc loi AI, AIII.Phng n 2: S dng phng n sn phng ton khi Sn c chiu dy 220 mm . H dm bin kch thc bx h=200 x 400 mm. S dng ct thp chu lc loi AIIIPhng n cu thang S dng cu thang dng bn chu lc c b dy bng 150mm. S dng ct thp chu lc loi AI Phng n b nc mi Bn np S dng bn np c chiu dy 100 mm. S dng ct thp chu lc loi AI. Bn thnh S dng bn np c chiu dy 120 mm. S dng ct thp chu lc loi AIII. Bn y S dng bn np c chiu dy 120 mm. S dng ct thp chu lc loi AIII. H dm np S dng dm np c kch thc bxh =200x300 mm . H dm y S dng dm y c kch thc bxh =200x400 mm Phng n kt cu khung b tng ct thp Sn c chiu dy 220 mm . H dm chnh kch thc bx h=400x800 mm. H dm ph kch thc bx h=150x350 mm. Vch c chiu dy 200mm Ct thp chu lc l ct thp AIIIPhng n kt cu mng b tng ct thp Phng n 1 : S dng phng n mng cc khoan nhi Cc c ng knh d1000 Chiu di cc l l=55m Sc chu ti thit k ca cc l 4870.3kNPhng n 2: S dng phng n mng cc p thng Cc c 400X400 Chiu di cc l 29m Sc chu ti thit k ca cc l 828.3 kNPhng n 3: S dng phng n mng cc p ly tm ST Cc c d500 Chiu di cc l 28m Sc chu ti thit k ca cc l 1023.3 kNPhng php tnh ton Cc gi thit tnh ton nh cao tng Sn l tuyt i cng trong mt phng ca n (mt phng ngang) v lin kt ngm vi cc phn t ct, vch cng cao trnh sn. Khng k bin dng cong (ngoi mt phng sn) ln cc phn t (thc t khng cho php sn c bin dng cong). B qua s nh hng cng un ca sn tng ny n cc sn tng k tip. Mi thnh phn h chu lc trn tng tng u c chuyn v ngang nh nhau. Cc ct v vch cng u c ngm chn ct v chn vch cng ngay mt i. Bin dng dc trc ca sn, ca dm xem nh l khng ng k.Lp s tnh Dng kt cu dm, ct, khung, dn, vm. Dng lin kt. Chiu di nhp, chiu cao tng. S b chn kch thc tit din cu kin.Xc nh ti trng tc dng Cn c vo qui phm hng dn v ti trng tc ng xc nh ti tc dng vo cu kin. Xc nh tt c cc ti trng v tc ng tc dng ln kt cu.Xc nh ni lc t tt c cc trng hp ti tc dng c th xy ra tc dng vo cu kin. Xc nh ni lc do tng trng hp t ti gy ra. Hin nay c ba trng phi tnh ton h chu lc nh nhiu tng th hin theo ba m hnh sau:M hnh lin tc thun tuGii trc tip phng trnh vi phn bc cao, ch yu l da vo l thuyt v, xem ton b h chu lc l h chu lc siu tnh. Khi gii quyt theo m hnh ny, khng th gii quyt c h c nhiu n. chnh l gii hn ca m hnh ny.M hnh ri rc - lin tc Tng h chu lc c xem l ri rc, nhng cc h chu lc ny s lin kt li vi nhau thng qua cc lin kt trt xem l phn b lin tc theo chiu cao. Khi gii quyt bi ton ny ta thng chuyn h phng trnh vi phn thnh h phng trnh tuyn tnh bng phng php sai phn. T gii cc ma trn v tm ni lc.M hnh ri rc (Phng php phn t hu hn) Ri rc ho ton b h chu lc ca nh nhiu tng, ti nhng lin kt xc lp nhng iu kin tng thch v lc v chuyn v. Khi s dng m hnh ny cng vi s tr gip ca my tnh c th gii quyt c tt c cc bi ton. Hin nay ta c cc phn mm tr gip cho vic gii quyt cc bi ton kt cu nh, SAFE, ETABS, SAP.... Trong cc phng php k trn, phng php phn t hu hn hin c s dng ph bin hn c do nhng u im ca n cng nh s h tr c lc ca mt s phn mm phn tch v tnh ton kt cu SAFE, ETABS, SAP da trn c s phng php tnh ton ny.T hp ni lc Tm gi tr ni lc nguy him nht c th xy ra bng cch thit lp cc s t ti v gii ni lc do cc s ny gy ra. Mt s tnh ti. Cc s hot ti nguy him c th xy ra. Ti mi tit din tnh tm gi tr ni lc bt li nht do tnh ti v mt hay vi hot ti : T=T0 +.Trong : T - gi tr ni lc ca t hp. T0 - gi tr t ni lc t s t tnh ti. Ti - gi tr ni lc t s t hot ti th i.
- mt trng hp hay cc trng hp hot ti nguy him ( tu loi t hp ti trng thit lp).Tnh ton kt cu b tng ct thp theo ttgh I v ttgh II Tnh ton theo trng thi gii hn I: sau khi xc nh c cc ni lc tnh ton M, N, Q ti cc tit din cu kin, tin hnh tnh kh nng chu lc ca cc tit din thng gc vi trc cng nh cc tit din nghing. Vic tnh ton theo mt trong hai dng sau: Kim tra kh nng chu lc : Tit din cu kin, tit din ct thp l c sn cn xc nh kh nng chu lc ca tit din. Tnh ct thp: xc nh tit din cu kin, din tch ct thp cn thit sao cho cu kin m bo kh nng chu lc. Tnh ton kim tra theo trng thi gii hn II: kim tra vng v vt nt.Nguyn tc tnh ton ti trng tc dng Xc nh ti trng. Tnh ti: Trng lng bn thn: chn s b tit din ca cu kin t tnh ra trng lng bn thn. Trng lng lp hon thin: cn c vo yu cu cu to tnh ra trng lng lp hon thin. i vi dm cn c tnh n trng lng tng xy trn dm (nu c). Hot ti : cn c vo yu cu ca tng loi cu kin, yu cu s dng m qui phm qui nh tng gi tr hot ti c th. Nguyn tc truyn ti. Ti t sn gm tnh ti v hot ti truyn vo khung di dng ti hnh thang v hnh tam gic. Ti do dm ph truyn vo dm chnh ca khung di dng ti tp trung (phn lc tp trung v mmen tp trung). Ti t dm chnh truyn vo ct. Sau cng ti trng t ct truyn xung mng.
TNH TON SN TNG IN HNHPHNG N 1 : THIT K PHNG N SN DMS b chiu dy tit din dm snChn s b tit din Sn ca cc cng trnh cao tng thng c chiu dy dy hn cc cng trnh nh thng thng bi nhiu l do c th xt n nh sau: V mt chu lc : Trong kt cu cng trnh c s gim yu gy ra bi cc l khoan treo thit b trn trn nh m khng c xt n trong tnh ton. V mt bin dng : nhm m bo cho sn c vng nm trong gii hn cho php v bin dng.Mt khc sn ca cc cng trnh cao tng thng c xem l tuyt i cng theo phng ngang (phng mt phng ca sn). Nn vic chn chiu dy sn c ngha quan trng v khi ch thay i chiu dy th khi lng b tng ca ton sn s thay i ng k . chiu dy sn c chn ph thuc vo nhp v ti trng tc dng, c th s b xc nh chiu dy sn theo cng thc s b sau :
Trong : i vi bn dm;
i vi bn k bn cnh;
ph thuc vo ti trng;Li ct ln (10.4m x 9m) nn dng h dm giao nhau chia nh cc sn.Dng sn ln nht: S4 kch thc 4.95m x 4.65m tnh .
Khi xt t l : nn lm vic nh theo c 2 phng, nn bn S2 lm vic nh bn k bn cnh nn :
Trong : L1 = 4650mm l chiu di cnh ngn ca sn.
=> Chn b dy sn: hs = 150 (mm). (tha mn i vi sn dn dng)Chn s b tit din dm Dng h dm giao nhau, vi kch thc s b cc tit din dm nh sau: Dm chnh: s dng h dm bp vi kch thc tit din
Chn:hdc = 800 (mm), bdc = 400 (mm)Vy chn dm chnh c kch thc tit din: 400x800 (mm) Dm ph: chia nh sn
Chn: hdp = 350 (mm) ,bdp = 150 (mm)Vy chn dm ph c kch thc tit din l: 150x350 (mm)
Hnh 3.1 Mt bng b tr dm sn tng in hnhNhp tnh ton cc bn Nhp tnh ton lt l khong cch gia cc im c xem l im t ca phn lc gi ta. Ty theo hnh thc ca lin kt m c cch xc nh lt khc nhau. Cng thc xc nh lt nh sau: (theo sch Sn sn ton khi-Nguyn nh Cng)Vi lin kt cng: lt = loVi mt gi k v mt lin kt cng: lt = lo + cTrong : lo: khong cch bn trong gia cc mp gi ta.c = min(0.5hb ; 0.5sb) (vi sb l on bn sn k ln gi ta) T , ta xc nh c chiu di tnh ton theo 2 phng ca cc bn, c th hin trong bng 3.2Ti trng tc dng ln snTnh ti Tnh ti tnh ton gm trng lng bn thn v trng lng tng trn bn.g = gs + gtVi:g : Tng tnh ti trn bn.gs : Trng lng bn thn ca sn.gt : Ti trng phn b ca tng trn sn.Trng lng bn thn
Hnh 3.2 Cc lp cu to sn Tnh ti tnh ton gm trng lng bn thn v trng lng tng trn bn.
hi : chiu dy cc lp cu to sn;i : khi lng ring;n : h s vt ti.Trng lng bn thn ca sn:Bng 3.1 Tnh ti tc dng ln snLoi snCu toTi tiu chun(daN/m2)HSVTTi tnh ton(daN/m2)
Phng ng Phng khch Lgia Hnh langLp gch hoa dy 10mmVa lt dy 20mman sn BTCT dy 150mmVa trt trn dy 15mmng ng thit b2000x0.01=20
1800x0.02=36
2500x0.15=2375
1800x0.015=27
50
1.1
1.3
1.1
1.3
1.122
46.8
2412.5
35.1
55
Tng ti 571.4
Sn v sinhLp gch nhm dy 10mmVa lt dy 20mmLp chng thm dy 20mmLp to dc 1% dy 30mman sn BTCT dy 150mmVa trt trn dy 15mmTi treo ng ng TBKT2000x0.01=20
1800x0.02=36
2000x0.02=40
1800x0.03=54
2500x0.15=375
1800x0.015=27
50 1.1
1.3
1.3
1.3
1.1
1.3
1.1
22
41.6
52
70.2
412.5
35.1
55
Tng ti688.4
-Sn sn thng
Gch Ceramic 10 mmVa lt 20mmLp chng thm 10mmBn BTCT 150Va trt trn 15mmng ng thit b2000x0.01=20
1800x0.02=362000x0.01=20
2500x0.15=375
1800x0.015=27
501.1
1.31.3
1.1
1.3
1.122
46.826
412.5
35.1
55
Tng ti597.4
Trng lng tng trn sn Ti trng tiu chun tng tc dng ln sn :
Ti trng tnh ton tng tc dng ln sn :
trng va trt xi mng dy 1.5(cm) :
Ti trng tnh ton tng tc dng ln sn :
Trong : ht : chiu cao ca tng (m). bt : b rng ca tng (m). lt : chiu di ca tng (m). Gt = 1800 (daN/m) : trng lng ring ca tng. Gv = 1600 (daN/m) : trng lng ring ca va. S : din tch sn tng ng (m).
Bng 3.2 Ti trng ca tng tc dng ln cc sn sndin kch thc ti tiu HSVTtiti ti
tchtngchuntnh tnh ton phn b
(m2)t (m)Bt (m)L (m)daNTon(daN)va(daN)(daN)
S219.13.050.16.33458.71.13804.61199.02291.67
S717.843.050.13.82086.21.12294.8723.2169.2
S814.143.050.16.33458.71.13804.571199.02353.6
S911.963.050.12.61427.41.11570.14494.83172.6
S423.023.050.14.42415.61.12657.2837.41151.81
S109.573.050.13.11701.91.11872.1589.99257.27
S1115.443.050.12.721493.31.11642.61517.67139.9
Trong kch thc cc sn, chiu cao tng, b dy, v chiu di ca tng c o trong bn v kin trc .Nh vy vi nhng sn S2, S4, S7, S8, S9, S10, S11 l cc sn ngoi chu tnh ti do cu to sn th cn chu ti trng do tng tc dng vo .Hot tiHot ti tnh ton tc dng ln sn v cu thang c tra bng 4.3 trong TCVN 2737-2006 ng vi tng phng nh sau
Bng 3.3 Hot ti tc dng ln cc snLoi snTi tiu chun(daN/m2)H s vt tiTi tnh ton(daN/m2)
Phng ng, phng khch1501.3195
Snh, hnh lang3001.2360
Ban cng, lgia2001.2240
Sn v sinh1501.195
Tng hm ( u xe)5001.2600
Tng trt ( thng mi)4001.2480
Tng mi751.397.5
Trong h s vt ti (tin cy i vi ti trng phn b u trn sn v cu thang ly bng 1.3 khi ti trng tiu chun nh hn 200(daN/m2), bng 1.2 khi ti trng tiu chun bng hoc ln hn 200(daN/m2) trch theo TCVN 2737-2006.Thit k sn in hnh bng phng php bng traNguyn l tnh tonLin kt ca bn Cc bn c lin kt vi dm theo cc cnh, bao gm hai dng lin kt chnh: Lin kt ta n (khp) khi bn ta n ln dm hoc tng betong ct thp ton khi c h s hd/hs 3. Do bn ngm vo dm chnh. Vi dm ph (150x350mm): hd/hs= 350/100 = 3.5 > 3 Do bn ngm vo dm ph.Phn li cc bn Nu l2/l1 2: bn lm vic 2 phng Nu l2/l1> 2: bn lm vic 1 phng i vi bn 2 phng: dng phng php tra bng, ni suy cc h s theo loi bn v chiu di cc cnh bn, t ta tnh ton c ni lc v ct thp b tr cho cc bn. i vi bn 1 phng: ct di 1m theo phng cnh ngn, xc nh ni lc v tnh ton ct thp cho cc bn.Tnh ton bn 2 phngNn kt hp 2 trn th bn S1S11 lm vic nh bn s 9 , c s tnh ton nh sau :
Trong : - L2 : phng cnh di.- L1 : phng cnh ngn.- Tnh ton bn theo s n hi.- Cng thc tnh mmen:+ Moment ln nht gia bn :
Phng ngn:
Phng di: + Moment m ln nht gi :
Phng ngn:
Phng di: Trong : i : k hiu bn ang xt ( trng hp ny i=9)1,2 : ch phng ang xt l L1 hay L2.L1,L2 : nhp tnh ton ca cc bn l khong cch gia cc trc gi ta.
P l tng ti trng tc dng ln bn.Vi : - g : tnh ti tnh ton.- p : hot ti tnh ton.- L1, L2 : nhp tnh ton ca bn.
Cc h sc tra bng theo s 9, ph thuc vo t s .Bng 3.4 Tng ti trng tc dng ln cc snkcht ltnh tih.ti.tiP
thuc(daN/m2)(daN/m2)(daN/m2)
L1L2L2/L1gbtgpbtgs=gbt+ gpbtpsq = ps+gs(daN)
S13.054.651.52571.40571.4195766.410869.5
S24.14.651.13571.4261.97833.371951028.3719605.9
S33.254.651.43571.40571.4195766.411582.2
S44.654.951.06571.4151.8723.2195918.221134.7
S53.53.551.01571.40571.4195766.49522.5
S63.054.351.43571.40571.4195766.410168.2
S74.14.351.06571.4169.2740.6195935.616686.4
S83.254.351.34688.4353.861042.261951237.2617491.8
S92.754.351.58688.4172.66861.061951056.0612633.1
S102.24.351.98571.4257.27828.671951023.679796.5
S113.454.351.26571.4139.9711.3195906.313601.3
S152.4453.61.47571.40571.4195766.46745.9
S173.33.81.15571.40571.4195766.49610.7
Bng 3.5 Tnh ni lc cc bn k bnL1L2L2/L1m91m92k91k92M1 (kNm)M2 (kNm)MI (kNm)MII (kNm)
(m)(m)
S13.054.651.520.0210.0090.0460.0202.250.985.022.16
S24.14.651.130.0200.0150.0460.0363.8838.986.98
S33.254.651.430.0210.0100.0470.0232.421.195.462.66
S44.654.951.060.0190.0170.0440.0393.993.559.328.2
S53.53.551.010.0180.0180.0420.0411.721.694.033.9
S63.054.351.430.0210.0100.0470.0232.131.054.792.35
S74.14.351.060.0190.0170.0440.0393.152.827.346.49
S83.254.351.340.0210.0120.0470.0273.672.058.294.65
S92.754.351.580.0210.0080.0460.0182.591.045.752.3
S102.24.351.980.0180.0050.0400.0101.80.463.881
S113.454.351.260.0210.0130.0470.0302.821.786.434.05
S152.4453.61.470.0210.0100.0470.0221.410.653.151.45
S173.33.81.150.020.0150.0460.0351.921.444.433.34
Tnh sn loi bn dm Khi t l th bn sn c xem nh l bn dm, lc ny bn lm vic 1 phng (phng cnh ngn). Bao gm cc bn sn t S12S14, S16, S18.
ng thi xt , bi v dm chnh v dm ph c chiu cao c chn s b ln lt l 800(mm) 350(mm) . M . i vi sn c tnh theo bn dm 4 u ngm , c s nh sau :
Cch tnh : ct 1 dy rng b=1(m) theo phng cnh ngn v tnh nh dm chu un lin kt 2 u l ngm. Cc gi tr momen trong bn dm c xc nh theo cng thc : Momen dng ln nht gia nhp :
Momen m ln nht gi :
Trong :q = (gs+ps)bL1: chiu di bn theo phng cnh ngn.
Bng 3.6 Tng ti trng tc dng ln cc bn dmkch thuct ltnh ti(daN/m2)h.ti(daN/m2).ti(daN/m2)
L1L2L2/L1gbtgpbtgs=gbt+ gpbtpsq = ps+gs
S122.48.63.58571.40571.4360931.4
S132.48.53.54571.40571.4360931.4
S142.47.63.17571.40571.4360931.4
S161.457.45.1571.40571.4360931.4
S181.153.352.91571.40571.4240811.4
Bng 3.7 Thng k kt qu tnh ni lc ca cc bn dm L1qs = (gs + ps)*bMnhpKN.mMgi KN.m
S122.4931.44.4712.335
S132.4931.44.4712.335
S142.4931.44.4712.335
S161.45931.41.6320.816
S181.15811.40.8940.447
Tnh ton b tr ct thp B tng s dng cho bn sn l dng b tng c cp bn l B25 vi cc ch tiu nh sau : Cng chu nn tnh ton : Cng chu ko tnh ton : Ct thp loi AI vi cc ch tiu sau : Cng chu nn tnh ton : Cng chu ko tnh ton : Cng tnh ton ct ngang : Cch tnh : Ct ra 1 dy bn rng 1(m)=1000(mm) v xem nh 1 dm chu un c kch thc tit din (1000mm x 150mm). Chn a = 15(mm) nn suy ra ho= h a = 150 - 15 = 135 (mm) p dng cng thc tnh ton : (dng tnh thp nhp v thp gi)
So snh : vi ,
,
Trong : l c trng tnh cht bin dng ca vng b tng chu nn .
l h s iu kin lm vic ca b tng .
l cng chu ko tnh ton ca ct thp .
l ng sut gii hn ca ct thp trong vng b toong chu nn (khi b tng t ti bin dng cc hn) . ly (MPa) i vi ti trng thng xuyn ; (MPa) i vi ti trng ngn hn v ti trng c bit. Nu th tnh ton kp . Nuth tnh ton ct n , vi cc bc nh sau :
Tnh
Tnh thp : Hm lng ct thp : Hm lng ct thp tnh ton ra c v hm lng b tr th phi tha iu kin sau
Trong :
.
Tnh in Hnh : chn bn s 1 tnh ton thp v b tr thp theo cng thc : bn 4 c thng s ban u l : L1 = 4.65(m) , L2 = 4.95(m) , v cc thng s ni lc : M1 = 2.25 (KN.m), M2 = 0.98 (KN.m), MI = 5.02 (KN.m), MII = 2.16 (KN.m).Ct ra 1 dy bn rng 1(m)=1000(mm) v xem nh 1 dm chu un c kch thc tit din (1000mm x 150mm).Chn a1 = 15 (mm) nn suy ra ho1= h a = 150 - 15 = 135 (mm)Chn a2 =25 (mm) nn ho2= h a = 150 25 = 125 (mm)Cng thc tnh :
Tnh
Vi M= M1 = 2.25 (KN.m) nn
Vi M= M2 = 0.98 (KN.m) nn
Vi M= MI = 5.02(KN.m) nn
Vi M= MII = 2.16(KN.m) nn
Vi,nn
Nn tnh ct thp theo ct n .
Tnh
Tnh thp : nn suy ra : , ,,.
Bng 3.8 Kt qu tnh ton ct thp sn
66
banMomen(kNm)a(mm)ho(mm)Atk(mm2)%ChonAchon%
S1M12.25151350.0090.00974.40.0558a200251.200.186
M20.98231270.0040.00434.40.0278a200251.200.198
MI5.02151350.0190.019166.90.1248a200251.200.186
MII 2.16231270.0090.00975.90.0608a200251.200.198
S2M13.88151350.0150.015128.70.0958a200251.200.186
M23231270.0130.013105.70.0838a200251.200.198
MI8.98151350.0340.035300.80.22310a200392.500.291
MII 6.98251250.0310.031252.10.20210a200392.500.314
S3M12.42151350.0090.00980.00.0598a200251.200.186
M21.19231270.0050.00541.80.0338a200251.200.198
MI5.46151350.0210.021181.60.1358a200251.200.186
MII 2.66231270.0110.01193.60.0748a200251.200.198
S4M13.99151350.0150.015132.40.0988a200251.200.186
M23.55231270.0150.015125.20.0998a200251.200.198
MI9.32151350.0350.036312.40.23110a200392.500.291
MII 8.2251250.0360.037297.00.23810a200392.500.314
S5M11.72151350.0070.00756.80.0428a200251.200.186
M21.69231270.0070.00759.40.0478a200251.200.198
MI4.03151350.0150.015133.70.0998a200251.200.186
MII 3.9231270.0170.017137.60.1088a200251.200.198
S6M12.13151350.0080.00870.40.0528a200251.200.186
M21.05231270.0040.00436.80.0298a200251.200.198
MI4.79151350.0180.018159.20.1188a200251.200.186
MII 2.35231270.0100.01082.70.0658a200251.200.198
S7M13.15151350.0120.012104.30.0778a200251.200.186
M22.82231270.0120.01299.30.0788a200251.200.198
MI7.34151350.0280.028245.10.18210a200392.500.291
MII 6.49251250.0290.029234.20.18710a200392.500.314
S8M13.67151350.0140.014121.70.0908a200251.200.186
M22.05231270.0090.00972.10.0578a200251.200.198
MI8.29151350.0310.032277.30.20510a200392.500.291
MII 4.65251250.0210.021167.10.1348a200251.200.201
S9M12.59151350.0100.01085.70.0638a200251.200.186
M21.04231270.0040.00436.50.0298a200251.200.198
MI5.75151350.0220.022191.40.1428a200251.200.186
MII 2.3231270.0100.01080.90.0648a200251.200.198
S10M11.8151350.0070.00759.50.0448a200251.200.186
M20.46231270.0020.00216.10.0138a200251.200.198
MI3.88151350.0150.015128.70.0958a200251.200.186
MII 1231270.0040.00435.10.0288a200251.200.198
S11M12.82151350.0110.01193.30.0698a200251.200.186
M21.78231270.0080.00862.50.0498a200251.200.198
MI6.43151350.0240.025214.30.1598a200251.200.186
MII 4.05231270.0170.017143.00.1138a200251.200.198
S12Mgoi4.47072151350.0170.017148.50.1108a200251.200.186
Mnhip2.23536151350.0080.00873.90.0558a200251.200.186
S13Mgoi4.47072151350.0170.017148.50.1108a200251.200.186
Mnhip2.23536151350.0080.00873.90.0558a200251.200.186
S14Mgoi4.47072151350.0170.017148.50.1108a200251.200.186
Mnhip2.23536151350.0080.00873.90.0558a200251.200.186
S15M11.41151350.0050.00546.50.0348a200251.200.186
M20.65231270.0030.00322.80.0188a200251.200.198
MI3.15151350.0120.012104.30.0778a200251.200.186
MII 1.45231270.0060.00650.90.0408a200251.200.198
S16Mgoi1.63189151350.0060.00653.90.0408a200251.200.186
Mnhip0.81595151350.0030.00326.90.0208a200251.200.186
S17M11.92151350.0070.00763.40.0478a200251.200.186
M21.44231270.0060.00650.50.0408a200251.200.198
MI4.43151350.0170.017147.10.1098a200251.200.186
MII 3.34231270.0140.014117.70.0938a200251.200.198
S18Mgoi0.89423151350.0030.00329.50.0228a200251.200.186
Mnhip0.44712151350.0020.00214.70.0118a200251.200.186
Nhn xt : Do cc sn c kch thc v chu ti trng khc nhau ty thuc vo tng loi sn nn vic din tch thp tnh ra , din tch thp chn b tr thp th chc chn khc nhau. Hm lng thp tnh ton v thp chn phi gn tng ng vi nhau , khng c s chnh lch ln .
Hm lng thp hp l ca sn l . Chiu dy bn chn hp l khi hm lng ct thp . Khi c ngha l chiu dy hb ca bn chn b . Nn tng thm chiu hb cho bn. Khi c ngha l chiu dy hb ca bn chn b . Nn gim bt chiu hb cho bn.
Da vo hm lng ct thp tnh ton , v hm lng ct thp b tr thp th ta thy a s hm lng thp nm trong khong , v khng c trng hp np l , nn khng cn tng thm chiu dy sn. Vi chiu dy hb ca sn tnh ton tha mn iu vng.Kim tra theo trng thi gii hn II
Ta ct 1 di bn rng 1 n v v coi bn lm vic nh 1 dm n gin vi hai u khp chu ti trng phn b u. vng ton phn
iu kin vng ( l vng gii hn)
trong :
trong :Es, Eb - m un n hi ca thp v b tng;As - din tch ct thp chu lc;
Ab - din tch quy i ca vng b tng chu nn, ;
- h s xt n s lm vic ca ct thp, ;
Gi trc S v ly theo bng 3.9
Bng 3.9 Bng ly S v ng vi cc trng hp tnh tonTrng hp tnh tonS
Tnh vi tc dng ngn hn ca ti trngCt c g0.40.65
Ct trn0.60.85
Tnh vi tc dng di hn ca ti trngCt c g0.81
Ct trn0.650.9
ng vi tc dng ca ti trng11
trong :
- hm lng ct thp trong b tng;
- cng chu ko tiu chun ca ct thp;
- cng chu ko tiu chun ca b tng;
- h s xt n s lm vic ca b tng;
- h s c trng trng thi n do ca btng vng chu nn, ph thuc v m mi trng v tnh cht di hn v ngn hn ca ti trng,=0.15 i vi ti trng di hn, =0.45 i vi ti trng ngn hn trong mi trng c m ln hn 40%;
Z - cnh tay n ni lc, hf = 2a: i vi cu kin ch nht;
: Chiu cao vng chu nn tng i ca btng c tnh nh sau:
S hng th 2 ca cng thc trn ly du + khi c lc nn trc, ngc li ly du - khi c lc ko trc, do tnh ton cho cu kin chu un nn s hng th 2 ny bng 0.
: c xc nh theo cng thc:
trong :
- h s ly bng 1.8 i vi btng nng, bng 1.6 i vi b tng nh;
- lch tm ca lc dc i vi trng tm tit din ct thp, tng ng vi n l momen M. (Do tnh theo cu kin chu un nn cho );As - din tch ct thp cng trc, As = 0;
- phn chiu cao chu nn ca cnh tit din ch I, T , ;Tnh vng f1 tc dng ngn hn ca ton b ti trngTi trng tiu chun tc dng ln sn nh sau:
Vi tit din hnh ch nht , suy ra bf = b, hf = 0, ct thp gia sn l ct n ;Vy:
=>
trong :
S = 0.6 ,
=>
=>
=> Tnh vng f2 tc dng ngn hn ca ti trng di hnTi trng tiu chun tc dng ln sn nh sau:
Vi tit din hnh ch nht , suy ra bf = b, hf = 0, ct thp gia sn l ct n ;Vy:
=>
trong :
S = 0.6 ,
=>
=>
=> Tnh vng f3 tc dng di hn ca ti trng di hnTi trng tiu chun tc dng ln sn nh sau:
Vi tit din hnh ch nht , suy ra bf = b, hf = 0, ct thp gia sn l ct n ;Vy:
=>
trong :
S = 0.85 ,
=>
=>
=>
vng ton phn:
Vy: Kt lun: bn m bo yu cu v vngThit k sn in hnh bng phng php phn t hu hanTi trng tng 100 tc dng ln dm
Ti trng tng 200 tc dng ln dm
M hinh kt cuS dng chng trnh phn t hu hn (SAFE V12) tnh ni lc sn
Hnh 3.3 Chia di sn theo phng X
Hinh 3.4 Chia di sn theo phng Y
Hnh 3.5 Biu mmen theo phng X
Hnh 3.6 Biu mmen theo phng Y
Ta ly kt qua ni lc safe trong san 1,2,3 so sanhphng X
Bng 3.10 Bng gi tr Mmen nhp v gi theo phng X
DiCSA5MSA2CSA22
V trMGMBMGMBMGMB
lMlmax29.595.0818.0233.8810.6830.9
L(m)1.12.452.1
DiCSA6MSA5CSA26
V trMGMBMGMBMGMB
lMlmax07.14039.91041.72
L (m)1.12.452.1
DiCSA9MSA6CSA30
V trMGMBMGMBMGMB
lMlmax23.813.4564.9726.964.0326.29
L(m)1.12.452.1
phng Y
Bng 3.11 Bng gi tr Mmen nhp v gi theo phng YDiCSB7MSB2CSB11
V trMGMBMGMBMGMB
lMlmax14.483.50.3619.427.8232.21
L(m)0.71.651.7
DiCSB11MSB4CSB3
V trMGMBMGMBMGMB
lMlmax7.8232.2113.5344.255.9529.39
L(m)1.72.11.8
DiCSB3MSB11CSB5
V trMGMBMGMBMGMB
lMlmax5.9529.39013.0614.363.98
L(m)1.81.652
Tinh thep sanB tng B25 => Rb = 14.5(MPa)Ct thp sn AI => Rs = 225(MPa)Chn a = 15 (mm)p dng cng thc tnh ton:
Hm lng ct thp: ct thp tnh ton ra c v hm lng b tr th phi tha iu kin sau
Trong :
min t l ct thp ti thiu, thng ly min = 0.05% max t l ct thp ti a
Bng 3.12 Tnh thp sn theo phng php phn t hu hn
Bng 3.13 Tnh thp sn theo phng php tra bng
Hnh 3.7 vng sn vng ln nht ca sn f= 1.978 cm < [f] =2.475 cmNhn xt :V thi gian c hn nn em ch tnh 3 sn so snh 2 phng php tnh , ta thy lng ct thp trong 2 phng php trn lch nhau khng nhiu. Nh vy ta c th s dng phn mm safe tnh thp sn cho cc cng trnh m bo sn lm vic lin tc.
PHNG N 2 : THIT K PHNG N SN PHNGTi trngCc lp cu to sn
Chiu dy sn chn s b Chn hs = 220 mmTit din ct chn s b : bxh = 400x600 mmChn tit din s b dm bin : bxh = 400x600 mm
Bng 3.14 Cc lp cu to snSTTVt liuChiu dy(m)(kN/m3)H s vt tinTnh ti gtt(kN/m2)
1Gch Ceramic0.01201.10.22
2Lp va lt0.02181.30.702
3Bn BTCT0.22251.16.05
4Va trt0.015181.30.351
5ng ng thit b0.55
Tng cng7.873
Do trong sn c nhng m ct nn tng ti trng tc dng ln sn q = 9.16 (KN/m2)Ti trng thng xuyn do tng n gin qui ti trng tng thnh ti phn b u ln sn. Ton b cng trnh gm c khong 115m tng 100 v 44.8m tng 200 xy trn sn
Tng tnh ti tc dng ln sn :Tnh ti phn b u trn sn: q = 9.16+1.38 = 10.54 (kN/m2)
Tnh ti tng phn b ln cc dm bin : Hot ti snTi trng tm thi phn b ln sn v cu thang ly theo bng 3 TCVN2737-2005[1]: Gi tr ti trng xem trong bng 1.2
Bng 3.15 Hot ti snLoi snPtcnPtt
(kN/m2)(kN/m2)
Phng ng, phng khch, phng n, phng bp, phng git, phng tm, sn thng1.51.31.95
L gia21.22.4
Hnh lang , cu thang31.23.6
Phng php thit k trc tipC s l thuyt
Hnh 3.8 Chia bn sn theo phng XTheo ACI318-2005[2] thit k trc tip: chia sn thnh tng di trn ct v di gia nhp nh hnh 1.1, trong mi di c mmen dng v mmen m tc dng. Tng hnh hc ca cc gi tr mmen m v dng trong phm vi mt bn bng gi tr
Vi : L2 : b rng ca bn theo phng vung gc vi phng ang xtqL2 : ti trng phn b trn mi n v chiu di ca bnLn : tnh bng khong cch thng thy gia 2 mt ct, mt m ctH s phn phi momen ti cc tit din nguy him cho sn phng c dm bin theo ACI318 xem trong bng 1.3
Bng 3.16 H s phn phi m ment (ACI 318)Moment nhpNhp binNhp gia
Gi bin(1)Gia(2)Gi gia th nht(3)Gia(4)Gi gia(5)
Tng Momen0.3 Mo0.5 Mo0.7 Mo0.35 Mo0.65Mo
Di ct0.23 Mo0.3 Mo0.53 Mo0.21 Mo0.49Mo
Di gia0.07 Mo0.2 Mo0.17 Mo0.14 Mo0.16Mo
Hnh 3.9 V tr tit din nguy himNhng sn c khong trng cu thang, cc l b tr h thng k thut nh ng ng cp - thot nc xuyn tng,.. coi nh vn lin tc, sau ny s tin hnh cc bin php cu to x l tin hnh phn chia xc nh mmen m v dng trong cc di. b rng mi di ly bng mt na khong cch gia cc trc ct theo mi phng. ti cc di trn gi mmen ln hn so vi cc di gia nhp xem rng cc di trn ct lm vic nh dm lin tc k ln cc m ct cn cc di gia nhp cng l cc di lin tc k ln cc gi ta n hi l cc di trn ct vung gc vi n.Chia cc di tnh ton nh sauCc thng s u vo:Chiu dy sn chn s b 220Tit din ct chn s b : bxh = 400x600 mmChn tit din s b dm bin : bxh = 400x600 mm cho n gin, do hot ti ca cc bn s khc nhau khi cng nng khc nhau, ta s ly hot ti ln nht tnh ton l ptt = 3.6 kN/m2
Momen theo phng OX
Hnh 3.10 Chia di sn theo phng X
Tng moment un trong sn :
Bng 3.17 Kt qu tnh moment OXV trNhpDiL2 (m)LN(m)M0(kN/m2)MG1MBMG2
Di ctNhp binCSX11.510.4286.7665.9686.03151.98
Nhp giaCSX21.58.5191.5593.8640.2393.86
Nhp giaCSX33.37.6336.90165.0870.75165.08
Nhp binCSX82.710.4516.17118.72154.85273.57
Nhp giaCSX92.78.5344.80168.9572.41168.95
Nhp giaCSX102.77.6275.65135.0757.89135.07
Di gia Nhp binCSX4310.4573.5240.15114.7097.50
Nhp giaCSX538.5383.1161.3053.6461.30
Nhp binCSX6310.4573.5240.15114.7097.50
Nhp giaCSX738.5383.1161.3053.6461.30
Hnh 3.11 V tr tit din nguy himMomen theo phng OY
Hnh 3.12 Chia di sn theo phng Y
Tng moment un trong sn : Bng 3.18 Kt qu tnh moment OYV trNhpDiL2 (m)LN(m)M0(kN/m2)MG1MBMG2
Di ctNhp binCSY13.59501.086115.25150.326265.576
Nhp giaCSY21.62.416.2897.9823.4217.982
Nhp binCSY539429.50398.786128.851227.637
Nhp giaCSY632.430.54214.9666.41414.966
Nhp binCSY91.51.99.5712.2012.8715.073
Nhp giaCSY1033.357.74428.29512.12628.295
Nhp binCSY111.52.314.0253.2264.2087.433
Nhp giaCSY123484.8441.57217.81641.572
Di gia Nhp binCSY35.49773.10554.117154.621131.428
Nhp giaCSY45.42.454.9768.7967.6978.796
Nhp binCSY75.59787.42155.119157.484133.862
Nhp giaCSY85.52.455.9948.9597.8398.959
Nhp binCSY134.63.388.5416.19817.70815.052
Nhp giaCSY144.62.446.8327.4936.5567.493
Ta dng moment ln nht thit k thpPhng XDiAA-BB
V trMGMBMGMBMGMB
lMlmax151.9886.028165.08114.7273.6154.85
Phng YDi11_22
V trMGMBMGMBMGMB
lMlmax265.58150.33131.43154.62227.6128.85
2_333_4
MGMBMGMBMGMB
133.9157.48441.57217.81615.0517.71
Phng phap phn t hu hanChia cc di tnh ton nh trn Do sn phng c cc vch cng nn cc gi thit tnh ton ca di sn qua vch l khng hp l, Do ta s dng phn t hu hn xc nh ni lc ca sn phng. y s dng phn mn SAFE xc nh ni lc ca sn phng. Ti trng ng tc dng ln sn cho nhng sn : phng ng, phng khch, phng n, phng bp, phng git, phng tm, sn thng
Ti trng ng tc dng ln sn cho nhng sn : Hnh lang , cu thang
V trong phn mm Safe t tnh trng lng bn thn snB tng cp bn B25,h s iu kin lm vic bt=1Thp s dng thp AIII.Xy dng m hnh trong phn mm ETABS v9.7.4 ri xut sang phn mm SAFE v12 vi cc thng s v tit din v ti trng nh trn. Sau khi xy dng xong v cho chng trnh chy phn tch v xut kt qu ni lc ln nht ti tng v tr.
Hnh 3.13 Chia di sn theo phng X
Hnh 3.14 Chia di sn theo phng Y
Hnh 3.15 Biu mmen theo phng X
Bng 3.19 Bng gi tr Mmen nhp v gi theo phng XDiAA-BB
V trMGMBMGMBMGMB
lMlmax315.9539.16269.0981374.363.2
Hnh 3.16 Biu mmen theo phng Y
Bng 3.20 Bng gi tr Mmen nhp v gi theo phng YDi11_22
V trMGMBMGMBMGMB
lMlmax432.3589.26106.21154.38456.892.13
2_333_4
MGMBMGMBMGMB
110.01158.462.239.738.2644.4
So sanh 2 phng phap xac inh ni lcPhng X1AA-BB
V trMGMBMGMBMGMB
lMlmax151.9886.028165.08114.7273.6154.85
DiAA-BB
V trMGMBMGMBMGMB
lMlmax315.9539.16269.0981374.363.2
Phng YDi11_22
V trMGMBMGMBMGMB
lMlmax265.58150.33131.43154.62227.6128.85
2_333_4
MGMBMGMBMGMB
133.9157.48441.57217.81615.0517.71
Di11_22
V trMGMBMGMBMGMB
lMlmax432.3589.26106.21154.38456.892.13
2_333_4
MGMBMGMBMGMB
110.01158.462.239.738.2644.4
=>Ta thy rng hai phng php cho kt qu gn ging nhau.Vi cc di i qua vch th vic xc nh ni lc bng phng php thit k trc tip kh chnh xc v khng tha cc iu kin p dng phng php. V th khi tnh thp cho bn sn ly kt qu trong phng php phn t hu hn.Tinh thep sanB tng B25 => Rb = 14.5 (MPa)Ct thep san AIII => Rs = 365 (MPa)Chon a = 30 (mm)ho = 220 30 =190 (mm)Ap dung cng thc tinh toan
Hm lng ct thp: ct thp tnh ton ra c v hm lng b tr th phi tha iu kin sau
Trong :
min t l ct thp ti thiu, thng ly min = 0.05% max t l ct thp ti a
Bng 3.21 Tnh thp snPhng XDi trn ct trc A (CSA1)
Vi trMbhhomAs (mm2) tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ctchn%
Gi 315.9515004003700.1060.1122469.370.441646.2512a20014a2001796.080.32
Nhp39.1615002201900.050.051577.420.2384.9512a200565.20.3
Di trn ct trc B (CSA3)
Vi trMbhhomAs(mm2)As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tnh % tri ugia cng m ctchn%
Gi 374.2727004003700.070.0732897.10.29107312a20014a2001180.640.1182
Nhp63.227002201900.0450.046937.450.18347.212a200565.20.3
Di gia nhp trc A - B(CSA2)
Vi trMbhhomAs(mm2)tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ct chn %
Gi 269.08630004003700.0450.0462028.410.18676.1412a20014a200872.920.0786
Nhp8130002201900.0520.0531200.120.21400.0412a200565.20.3
Phng YDi trn ct trc 1(CSB1)
Vi trMbhhomAs(mm2) tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ctchn%
Gi 432.3535004003700.0620.0643292.490.25940.7112a20014a2001180.640.09
Nhp89.2635002201900.0490.051320.890.2377.412a200565.20.3
Di trn ct trc 2(CSB3)
Vi trMbhhomAs(mm2) tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ctchn %
Gi 456.830004003700.0770.083527.670.321175.8912a20014a2001334.50.12
Nhp92.1330002201900.0590.0611381.270.24460.4212a200565.20.3
Di trn ct trc 3(CSB5)
Vi trMbhhomAs(mm2) tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ctchn%
Gi 62.230004003700.010.01440.960.04146.9912a200565.20.15
Nhp39.730004003700.0070.007308.670.03102.8912a200565.20.15
Di gia nhp trc 1-2(CSB2)
Vi trMbhhomAs(mm2)As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tnh % tri ugia cng m ctchn%
Gi 106.2154002201900.0380.0391589.60.15294.3712a200565.20.3
Nhp154.3854002201900.0550.0572323.260.23430.2312a200565.20.3
Di gia nhp trc 2-3(CSB4)
Vi trMbhhomAs(mm2) tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ctchn%
Gi 110.0155002201900.0380.0391619.030.15294.3712a200565.20.3
Nhp158.455002201900.0550.0572366.280.23430.2312a200565.20.3
Di gia nhp trc 3-4(CSB6)
Vi trMbhhomAs(mm2) tnh % As/1mChn thpAs chn
(kN.m)(mm)(mm)(mm)tri ugia cng m ctchn%
Gi 38.2646004003700.0040.004270.450.0258.7912a200565.20.15
Nhp44.446004003700.0050.005338.070.0273.4912a200565.20.15
Kim tra xuyn thung
Hnh 3.17. din tch truyn ti sn ln ct
Kim tra iu kin xuyn thng i vi ct Ta c hs = 400 mm ,a = 30mm , suy ra ho = 370Lc gy chc thng :Qct = (qtt + ptt ) x S
Lc chng xuyn :Pcx = 0.75RbtFcxTrong :Rbt : cng chu ko ca btongFcx :din tch thp chng xuyn
Pcx = 0.75x1.05x1287600 = 1013985 N = 1013.9 KnVy Q 0.75.Rbt.btb.h0 => Sn m bo iu kin chng xuyn thng.Chnh lch gia kh nng chng xuyn thng ca sn v lc xuyn thng khng nhiu cho thy chiu dy bn sn chn l ph hp.Kim tra chuyn vi san
Hnh 3.18.Chuyn v ca snfmax = 9.9 mm Ly t kt qu phn tch ca phn mm Safe
=>Tha iu kin fmax N tha Tnh ton theo phng php phn t hu hn (sap 2000)M hnh M hnh 3D ton b b nc bng phn mm PTHH sap2000, ta thu c cc kt qu t m hnh phn tch nh sau:
Hnh 5.13 M hnh 3D b nc
Hnh 5.14 Hot ti gn vo bn np
Hnh 5.15 Hot ti nc vo bn thnh
Hnh 5.16 Hot ti nc vo bn y
Hnh 5.17 Hot ti gi y gn vo bn thnh
Hnh 5.18 Hot ti gi ht gn vo bn thnhNi lc bn yBn y b nc mi gm 2 sn nh c cng kch thc: 3.8x3.8 (m) v ti trng. Tin hnh phn tch m hnh, ta thu c kt qu ni lc bn y do t hp nh sau:
Hnh 5.19 Moment M22 bn np
Hnh 5.20 Moment M22 bn y
Hnh 5.21 Moment M22 bn thnhTnh thp cho b ncNp b lc tc dng: trng lng bn thnti sa cha
M11maxM11minM22maxM22min
kNm/mkNm/mkNm/mkNm/m
1.2-3.031.85-2.95
Np ch yu chu un v chu ko Chn vt liu l : Btng B25 (Rb = 145daN/cm2 ) , Thp AI c Ra=(2250daN/cm2).
vi h0 = h a = 10 1.5 = 8.5 cm. Ta c bng kt qu tnh thp nh sau:
Bng 5.8 Kt qu tnh thp np b Tit dinMhomAsB trAsbt
(mm)(mm2/m)(mm2/m)%
M113.03850.0290.029160.88a200301.440.35
M111.2850.0110.01263.18a200301.440.35
M222.95770.0340.035173.38a200301.440.39
M221.85770.0220.022107.968a200301.440.39
Nhn xt: np b chu un do ti trng bn thn v hot ti gy ln. Chu ko do p lc nc tc dng vo bn thnh gy ra lc tc dng vo np b.Thnh b Lc tc dng : trng lng bn thn ti trng t sn np truyn vo p lc nc v p lc gi tc dngPhng XM22maxM22min
kNm/mkNm/m
8.65-4.26
Phng YM22maxM22min
kNm/mkNm/m
4.53-2.73
Np ch yu chu un v chu ko Chn vt liu l : Btng B25 (Rb = 145daN/cm2 ) , Thp AI c Ra=(2250daN/cm2).
vi h0 = h a = 12 15 = 10.5 cm. Ta c bng kt qu tnh thp nh sau:
Bng 5.9 Bng tnh thp bn thnh Tit dinMhomAsB trAsbt
(mm)(mm2/m)(mm2/m)%
M224.261050.0270.027182.88a200301.440.28
M228.651050.0540.056376.68a200401.920.38
Tit dinMhomAsB trAsbt
(mm)(mm2/m)(mm2/m)%
M222.731050.020.02116.68a200301.440.29
M224.531050.0280.029194.58a200301.440.29
y b Lc tc dng Trng lng bn thn Ti trng t thnh b truyn xuyn Ti trng 4 ct trong truyn xung p lc nc Gi ht
M11maxM11minM22maxM22min
kNm/mkNm/mkNm/mkNm/m
14.82-6.712.85-9.43
Chn vt liu l : Btng B25 (Rb = 145daN/cm2 ) , Thp AI c Ra=(2250daN/cm2).
vi h0 = h a = 12 1.5 = 10.5 cm. Ta c bng kt qu tnh thp nh sau:
Bng 5.10 Bng tnh thp bn y Tit dinMhomAsB trAsbt
(mm)(mm2/m)(mm2/m)%
M116.71050.0420.043289.88a200301.440.35
M1114.821050.0930.097659.410a120706.50.67
M229.43970.0690.072448.148a120452.20.47
M2212.85950.0980.104633.9910a120706.50.74
So snh v kt lunPhng php 1 (PP1): tnh ton ni lc kt cu y b v thnh b vi quan nim y b lm vic c lp vi bn thnh v bn np.Phng php 2 (PP2): tnh ton ni lc kt cu y b v thnh b theo quan im xt n s lm vic tng th ca c h kt cu (bn np, bn y, bn thnh) bng cch m hnh b nc 3D, s dng phn mm PPHH sap2000
Bng 5.11 Bng so snh 2 phng phpv trbn npbn ybn thnh
bng trasap 2000bng trasap 2000bng trasap 2000
M18a2008a2008a1508a200
M28a2008a2008a1508a120
MI8a2008a20010a10010a120
MII8a2008a20010a10010a120
M gi8a1508a200
M nhp8a2008a200
TNH TON THIT K H KHUNGM hnh h khungS dng ETABS m hnh h khung.
Hnh 6.1 M hnh 3D cng trnh.
Chn s b kch thc cu kin trong m hnh . Dm chnh tng trt v tng lng, tng hm c kch thc h x b=800x400(mm) Dm bin tng 1-16 c kch thc h x b=500x300(mm) Chiu dy sn hs=220(mm) Chiu dy m ct hm= 400 (mm)Chn kch thc cc phn t ctDo h li c tnh i xng do ta ch cn tnh 2 ct l C2A, C2BTnh chn s b tit din cho ct C2A
Din tch tit din ct xc nh s b nh sau: Trong :N = n( F x Q+Nt+Nd ).n - s tng pha trn truyn ti xung ct tnh.Q - ti trng phn b trn 1m2 sn (tnh ti v hot ti).F - din tch truyn ti xung ct = 1.21.6Rb = 15 (daN/ cm2) :cng chu nn ca btng cp bn B25Nt,Nd: ti tp trung ca tng , dm do dm truyn vo.q = qtinhtai + qhoattai = 916 + 195 = 1111 (daN/m2).Chn tng 200: Nt= 396x(10.4+8.5)x(3.4-0.5)/2 =10852.38(daN)Dm chnh c tit din 300x500 : Nd=1.1x2500x(10.4+8.5)x0.3x0.5/2=3898.125 (daN).F= (10.4+8.5)x9/4=42.525(m2). Tnh cho ct tng lng:
Vi n=17N=17x(42.525x1111+10852.38+3898.125) = 1053928 (daN); =1.2Fcot=1.2x1053928/145=8722.165 (cm2)Chn ct 120x80 (cm)Tnh chn s b tit din cho ct C2A:q = qtinhtai + qhoattai = 916 + 360 = 1276 (daN/m2).F= (10.4+8.5)/2*(9+2.4)/2=53.865 (m2).Vi n=17N=17x(53.865*1276) = 1168440 (daN); =1.2Fcot=1.2x1168440/145=9669.845 (cm2) . Chn ct = 120x90 (cm).
Bng 6.1 S b tit din ct.tngk hiuchn
hm-lngC2A120x80
C2B120x90
1_5C2A110x75
C2B110x75
6_10C2A90x60
C2B90x60
11_16C2A60x50
C2B60x50
Chn tit din vch cngVch cng l kt cu chu lc ngang ch yu ca nh cao tng. trnh b mt n nh ngang, b dy bng vch cng khng c b hn:BW = min(hs/20;150mm), trong hs l chiu cao tng.Vy BW = min(hs/20;150mm) = min(3400/20;150mm). Chn BW = 200(mm). T kt qu Design trong ETABS ta c kch thc hp l cho tng cu kin ri tnh ton kim tra sau Trng lng bn thn btng ETABS tnh.khai bo h s Self Weight Multiplier ca tnh ti(DEAD LOAD)=1
Hnh 6.2 Mt bng kt cu tng in hnh trong ETABSVt liu s dng B tng S dng b tng cp bn B25 Cng chu nn dc trc: Rb = 14.5 MPa. Cng chu ko dc trc: Rbt = 1.05 MPa. M un n hi: Eb = 30000 MPa. Ct thp Ct thp loi AI (i vi ct thp c 10). Cng chu nn Rsc = 225 MPa. Cng chu koRs = 225 MPa. M un n hiEs = 210000 MPa. Ct thp loi AIII (i vi ct thp c >10). Cng chu nn Rs = 365 MPa. Cng chu koRs = 365 MPa. M un n hiEs = 200000 MPa.Xc nh ti trngTnh tiTnh ti tc dng ln cng trnh l ti do cc lp hon thin, ti do tng, trng lng bn thn b tng ct thp.
Bng 6.2 Tnh ti i vi sn tng in hnhSTTCc lp cu to snB dy (m)Trng lng ring(kN/m3)H s vt ti(n)Trng lng(kN/m2)
1Gch hoa0.01201.10.22
2Va lt sn0.02181.30.468
3Va trt trn0.015181.30.351
4ng ng,thit b0.5(kN/m2)1.10.55
Tng cng1.004
Bng 6.3 Tnh ti i vi sn v sinhSTTCc lp cu to snB dy (m)Trng lng ring(kN/m3)H s vt ti(n)Trng lng(kN/m2)
1 Gch hoa0.01201.10.22
2 Va lt sn0.02181.30.468
3lp chng thm0.03201.30.78
4lp to dc 1%0.03181.30.702
5 Va trt trn0.015181.30.351
6 ng ng,thit b0.5(kN/m2)1.10.55
Tng cng3.041
Ti tng c tnh ton theo cng thc gt = ttht.ht = htng - hdm.t = 1.8 kN/m vi cc tng.
Hot ti
Bng 6.4 Hot ti c xc nh theo cng nng s dng ca snLoi snTi tiu chun(daN/m2)H s vt tiTi tnh ton(daN/m2)
Phng ng, phng khch1501.3195
Snh, hnh lang3001.2360
Ban cng, lgia2001.2240
Sn v sinh1501.3195
Tnh ton ti giCng trnh cao 67.9 m > 40m nn ti gi gm thnh phn tnh v thnh phn ng.Thnh phn gi tnh ca ti giGi tr tiu chun thnh phn tnh ca p lc gi Wj cao zj Wj = W0 K(zj) C hTrong : W0 : Gi tr p lc gi tiu chun. Cng trnh xy dng TP HCM thuc vng II-A.),ta c :W0 = 0.95 kN/m2.L vng nh hng bo yu, W0 c php gim i 0.12 kN/m2 nn p lc gi tiu chun W0 = 0.83 kN/m2 K(zj) : H s tnh n s thay i p lc gi theo cao. C l h s kh ng (C = 0.8 i vi pha n gi, C = -0.6 i vi pha khut gi).
Bng 6.5 Kt qu tnh gi tnh theo phng XTnghtng(m)cao z(m)kB(m)Wtnh(kN)
mi1.567.41.4120.450.11
thng3.465.91.4020.4113.13
T163.462.51.3920.4112.06
T153.459.11.3820.4110.94
T143.455.71.3620.4109.76
T133.452.31.3520.4108.52
T123.448.91.3320.4107.22
T113.445.51.3120.4105.84
T103.442.11.2920.4104.37
T93.438.71.2820.4102.80
T83.435.31.2520.4101.11
T73.431.91.2320.499.28
T63.428.51.2120.497.29
T53.425.11.1820.495.09
T43.421.71.1520.492.63
T33.418.31.1120.489.83
T23.414.91.0720.486.57
T14.511.51.0320.4109.36
lng470.9420.488.90
trt330.8020.457.24
Bng 6.6 Kt qu tnh gi tnh theo phng YTnghtng(m)cao z(m)kB(m)Wtnh(kN)
mi1.567.41.4145.4111.53
thng3.465.91.4045.4251.78
T163.462.51.3945.4249.39
T153.459.11.3845.4246.89
T143.455.71.3645.4244.27
T133.452.31.3545.4241.52
T123.448.91.3345.4238.61
T113.445.51.3145.4235.54
T103.442.11.2945.4232.27
T93.438.71.2845.4228.77
T83.435.31.2545.4225.02
T73.431.91.2345.4220.95
T63.428.51.2145.4216.52
T53.425.11.1845.4211.62
T43.421.71.1545.4206.15
T33.418.31.1145.4199.92
T23.414.91.0745.4192.66
T14.511.51.0345.4243.38
lng470.9445.4197.84
trt330.8045.4127.39
Thnh phn ng ca ti giDo cng trnh cao 67.8 m > 40 m nn phi tnh n thnh phn ng ca ti gi, tn s dao ng ring ca cng trnh ch ly nhng tn s c bn nh hn tn s dao ng cho php fL = 1.3(Hz). Bc 1: Xc nh tn s dao ng ring
Bng 6.7 Tn s dao ng ringmodechu ktn sdao ng
12.0369230.490937phng X
21.9608770.509976xon
31.9448270.514185phng Y
40.617611.619145xon
50.5432561.840753phng X
60.5308221.883871phng Y
70.4851152.061367phng X
80.3322433.009845xon
90.2555123.913711phng Y
100.2135064.683709xon
110.2124124.707832phng X
120.1594886.270064phng Y
Nhn xt: Tn s dao ng ring: f3 < fL = 1.3(Hz) < f4 .V vy, theo iu 4.3 TCXD 229:1999, ta cn tnh ton thnh phn ng ca gi c k n tc dng ca c xung vn tc gi v lc qun tnh ca cng trnh tng ng vi 4 dng dao ng u tin.Tuy nhin do dng dao ng 2 v 4 l xon, nn ta khng k trong tnh ton.Mode 1: Cng trnh dao ng theo phng OX Mode 2: Cng trnh b xonMode 3: Cng trnh dao ng theo phng OYMode 4: Cng trnh b xon Bc 2: Xc nh gi tr tiu chun thnh phn tnh ca p lc gi ln cc phn tnh ton ca cng trnhGi tr tiu chun thnh phn tnh ca p lc gi Wj cao zj so vi mc ti mt t c xc nh theo cng thc: Wj = Wok(zj)C (kN/m2)Trong :W0 Gi tr p lc gi tiu chun. Cng trnh xy dng ti TP. H Ch Minh thuc vng II-A: W0 = 83 daN/m2 = 0.83 kN/m2 c - H s kh ng. Pha n gi c = 0.8, pha ht gi c = 0.6 c = 0.6 + 0.8 = 1.4k(zj) - H s xt n s thay i p lc gi theo chiu cao (tra bng 5 -TCVN 2737-2005, theo dng a hnh A) Bc 3: Xc nh thnh phn ng ca ti trng gi tc dng ln cng trnh Gia tri tiu chun thanh phn ng cua tai gio tac dung ln phn th j, ng vi dang dao ng th i c xac ing theo cng thc.WP(j1)=Mj 11yj1Trong o: WP(ij):lc, n vi tinh toan kN Mj : khi lng tp trung cua phn cng trinh th j, (T). i : h s ng lc ng vi dang dao ng th i, khng th nguyn i : h s c xac inh bng cach chia cng trinh thanh n phn. Xc nh Mj : Khi lng cc im tp trung theo cc tng c xut t ETABS (Center Mass Rigidity)Bng 6.8 Khi lng tp trung theo cc tngtngMassXMassY
mi41.837341.8373
thng932.209932.209
T161019.521019.52
T151019.521019.52
T141019.521019.52
T131019.521019.52
T121019.521019.52
T111027.681027.68
T101036.011036.01
T91036.011036.01
T81036.011036.01
T71036.011036.01
T61045.661045.66
T51055.541055.54
T41055.541055.54
T31055.541055.54
T21055.541055.54
T11069.021069.02
lng1320.511320.51
trt1934.691934.69
Xc nh i: H s ng lc c xc nh ng vi 3 dng dao ng u tin, ph thuc vo thng s i v gim loga ca dao ng:
Trong : H s tin cy ti trng gi ly = 1.2 fi : Tng s dao ng ring th i. W0 : Gi tr p lc gi. Ly bng 0.83(kN/m2) = 830 (N/m2). Cng trnh bng BTCT. Theo th (hnh 2 trang 10 trang = 0.3 (TCXD229 1999 ). Ta xc nh c h s ng lc i nh sau :Bng 6.9 H s ng lc iMode fi (Hz)
10.4910.0681.71
20.5090.0661.696
30.5140.0651.692
Xc nh i : H s i c xc nh theo cng thc:
i = Trong : WFj gi tr tiu chun thnh phn ng ca ti trng gi tc dng ln phn th j ca cng trnh, ng cc dng dao ng khc nhau khi ch k n nh hng ca xung vn tc gi, c xc nh theo cng thc: WFj = Wj j Sj (kN/m) Wj : gi tr tiu chun thnh phn tnh ca gi (kN/m2) Sj : din tch n gi phn cng trnh th j (m2) h s tng quan khng gian p lc ng ca ti trng gi. Tra bng 4 v 5 trong TCXD 229 - 1999 ta c: Mode 3: 3 = 1Mode 1: Tnh gi tr 1 Gi theo phng X mt n gi c dng ch nht nh hng song song vi mt phng YOZ nn: = 0.420.4 = 8.16 m; = H = 67.4 m Gi theo phng Y mt n gi c dng ch nht nh hng song song vi mt phng XOZ nn : = D = 45.4 m; = H = 67.4 m Tra bng 4 (trang 9 TCXD 229 : 1999) ta c x = 0.695, y = 0.632yji : dch chuyn ngang t i ca trng tm phn cng trnh th j ng vi dng dao ng ring th i
Bng 6.10 dch chuyn ngang t i ca trng tm phn cng trnh th j ng vi dng dao ng ring th itngmode 1mode 3
UXUYUXUY
mi-0.01150.00010.0009-0.0116
thng-0.01110.00010.001-0.0114
T16-0.01050.00010.0009-0.0109
T15-0.00990.00010.0009-0.0103
T14-0.00920.00010.0008-0.0097
T13-0.00850.00010.0007-0.0091
T12-0.00790.00010.0007-0.0085
T11-0.00720.00010.0006-0.0078
T10-0.00650.00010.0006-0.0071
T9-0.00580.00010.0005-0.0064
T8-0.00510.00010.0004-0.0057
T7-0.00440.00010.0004-0.005
T6-0.003700.0003-0.0043
T5-0.00300.0003-0.0036
T4-0.002400.0002-0.0029
T3-0.001800.0002-0.0023
T2-0.001300.0001-0.0016
T1-0.000800.0001-0.0011
lng-0.000300-0.0004
trt000-0.0001
j : h s p lc ng ca ti trng cao z ng vi phn th j ca cng trnh.Tra bng 3 trong TCVN 229:1999 ty theo cao phn th j ca cng trnh
Bng 6.11 H s p lc ng ca ti trng jtngZ
mi67.40.265
thng65.936.812
T1662.5777.466
T1559.10.268
T1455.70.269
T1352.30.270
T1248.90.271
T1145.50.273
T1042.10.274
T938.70.276
T835.30.277
T731.90.279
T628.50.282
T525.10.284
T421.70.287
T318.30.290
T214.90.295
T111.50.300
lng70.311
trt30.330
T gi tr Wj, j, Sj, v ta thay v cng thc (*) xc nh c gi tr tiu chun thnh phn ng ca ti gi WFj.
Bng 6.12 Theo phng Xtnghtng(m)cao zkvB(m)WFj(kN)
mi1.567.41.410.69520.414.24
thng3.465.91.40.69520.432.22
T163.462.51.390.69520.432.06
T153.459.11.380.69520.431.9
T143.455.71.360.69520.431.73
T133.452.31.350.69520.431.55
T123.448.91.330.69520.431.36
T113.445.51.310.69520.431.15
T103.442.11.290.69520.430.93
T93.438.71.280.69520.430.7
T83.435.31.250.69520.430.44
T73.431.91.230.69520.430.16
T63.428.51.210.69520.429.85
T53.425.11.180.69520.429.51
T43.421.71.150.69520.429.12
T33.418.31.110.69520.428.67
T23.414.91.070.69520.428.13
T14.511.51.030.69520.436.35
lng470.940.69520.430.46
trt330.80.69520.420.99
Bng 6.13 Theo phng Ytnghtng(m)cao zkB(m)WFj(kN)
mi1.567.41.410.63345.432.73
thng3.465.91.40.63345.465.33
T163.462.51.390.63345.465.02
T153.459.11.380.63345.464.69
T143.455.71.360.63345.464.34
T133.452.31.350.63345.463.98
T123.448.91.330.63345.463.59
T113.445.51.310.63345.463.17
T103.442.11.290.63345.462.73
T93.438.71.280.63345.462.25
T83.435.31.250.63345.461.73
T73.431.91.230.63345.461.17
T63.428.51.210.63345.460.54
T53.425.11.180.63345.459.84
T43.421.71.150.63345.459.05
T33.418.31.110.63345.458.13
T23.414.91.070.63345.457.04
T14.511.51.030.63345.473.71
lng470.940.63345.461.76
trt330.80.63345.442.56
T WFj, yij ta tm c j T gi tr Mj, I, j, v yij ta thay v cng thc (*) xc nh c gi tr tiu chun thnh phn ng ca ti gi WP(j).
Bng 6.14 Kt qu tnh ton gi ng tc dng vo cng trnh ng vi mode 1 theo phng XTng xji Mj(kN)WFj(kN)xji*WFjxji2*mjxWttpji(kN)
mi-0.011541.8414.24-0.1640.006-4.243.51
thng-0.0111932.2132.22-0.3580.115-4.2475.42
T16-0.01051019.5232.06-0.3370.112-4.2478.02
T15-0.00991019.5231.90-0.3160.1-4.2473.57
T14-0.00921019.5231.73-0.2920.086-4.2468.36
T13-0.00851019.5231.55-0.2680.074-4.2463.16
T12-0.00791019.5231.36-0.2480.064-4.2458.70
T11-0.00721027.6831.15-0.2240.053-4.2453.93
T10-0.00651036.0130.93-0.2010.044-4.2449.08
T9-0.00581036.0130.70-0.1780.035-4.2443.80
T8-0.00511036.0130.44-0.1550.027-4.2438.51
T7-0.00441036.0130.16-0.1330.02-4.2433.23
T6-0.00371045.6629.85-0.110.014-4.2428.20
T5-0.0031055.5429.51-0.0890.009-4.2423.08
T4-0.00241055.5429.12-0.070.006-4.2418.46
T3-0.00181055.5428.67-0.0520.003-4.2413.85
T2-0.00131055.5428.13-0.0370.002-4.2410.00
T1-0.00081069.0236.35-0.0290.001-4.246.23
lng-0.00031320.5130.46-0.0090-4.242.89
trt01934.6920.9900-4.240.00
Bng 6.15 Kt qu tnh ton gi ng tc dng vo cng trnh ng vi mode 3 theo phng YTng yji Mj(kN)WFj(kN)yji*WFjyji2*mjYWttpji(kN)
mi-0.011641.8432.73-0.380.006-8.226.71
thng-0.0114932.2165.33-0.7450.121-8.22146.94
T16-0.01091019.5265.02-0.7090.121-8.22153.66
T15-0.01031019.5264.69-0.6660.108-8.22145.20
T14-0.00971019.5264.34-0.6240.096-8.22136.74
T13-0.00911019.5263.98-0.5820.084-8.22128.28
T12-0.00851019.5263.59-0.5410.074-8.22119.82
T11-0.00781027.6963.17-0.4930.063-8.22110.84
T10-0.00711036.0162.73-0.4450.052-8.22101.71
T9-0.00641036.0162.25-0.3980.042-8.2291.68
T8-0.00571036.0161.73-0.3520.034-8.2281.65
T7-0.0051036.0161.17-0.3060.026-8.2271.63
T6-0.00431045.6660.54-0.260.019-8.2262.17
T5-0.00361055.5459.84-0.2150.014-8.2252.54
T4-0.00291055.5459.05-0.1710.009-8.2242.33
T3-0.00231055.5458.13-0.1340.006-8.2233.57
T2-0.00161055.5457.04-0.0910.003-8.2223.35
T1-0.00111069.0273.71-0.0810.001-8.2216.26
lng-0.00041320.5161.76-0.0250-8.227.30
trt-0.00011934.6942.56-0.0040-8.222.68
Ni lc cho thnh phn tnh v ng ca ti g xc nh nh sau:
Trong : X : Mmen un (xon), lc ct, lc dc, hoc chuyn v y ta xem l ti trng tng hp ca 2 thnh phn tnh v ng. Xt : Mmen un (xon), lc ct, lc dc, hoc chuyn v do thnh phn tnh ca ti trng gi gy ra, y ta xem l ti thnh phn tnh Xi : Mmen un (xon), lc ct, lc dc, hoc chuyn v do thnh phn ng ca ti trng gi gy ra khi dao ng dng th i, y ta xem l ti thnh phn ng . s : s dng dao ng tnh ton.Ti trng ng t ng t c xem nh la mt trong nhng yu cu bt buc khng th thiu va la yu cu quan trong nht khi thit k cac cng trinh cao tng. Do o, bt ky cng trinh xy dng nao nm phn vung v ng t phai tinh toan tai trong ng t. Tinh toan lc ng t theo tiu chun TCXDVN 375 2006 Thit k cng trinh chiu ng tPhng php phn tch ph phn ng Phng php phn tch ph phn ng dao ng l phng php ng lc hc kt cu s dng ph phn ng ng lc ca tt c cc dng dao ng nh hng n phn ng tng th ca kt cu. iu kin p dng: Phng php phn tch ph phn ng l phng php c th p dng cho tt c cc loi nh (xem 4.3.3.1(3b) TCXDVN 375:2006) S dng dao ng cn xt n trong phng php ph phn ng Phi xt n phn ng ca tt c cc dao ng gp phn ng k vo phn ng tng th ca cng trnh. iu ny c th c tha mn mt trong hai iu kin sau: Tng cc trng lng hu hiu ca cc dng dao ng (mode) c xt chim t nht 90% tng trng lng ca kt cu. Tt c cc dng dao ng c trng lng hu hiu ln hn 5% ca tng trng lng u c xt ti. Quy trnh tnh tonTin hnh tnh ton theo cc bc sau: Xc nh chu k v dng dao ng ring ca nh. Xc nh ph thit k khng th nguyn Sd(Ti) ca cng trnh ng vi tng dng dao ng: Ph thit k Sd (T) theo phng nm ngang Theo iu 3.2.2.5 cua TCXDVN 375 2006 thi: Ph thit k Sd (T) theo phng nm ngang c xac inh bng cac biu thc sau:
Trong o: Sd (T) la ph thit k q la h s ng x: q = 3.9 la h s ng vi cn di cua ph thit k theo phng nm ngang: = 0.2 Xc nh tng lc ct y ti chn cng trnh tng ng vi dng dao ng th i: Trong : Wi: trng lng hu hiu tng ng vi dng dao ng th i, xc nh theo cng thc sau: Sd(Ti): ph thit k khng th nguyn
Trong biu thc trn: n: tng s tng theo mi phng Ui,j: gi tr chuyn v theo mi phng trn mt bng ti im t trng lng th j ca dao ng th i Wi: trng lng tp trung ti tng th j ca cng trnh Phn phi ti trng ngang ln cc cao trnh tng ca tng lc ct ti chn cng trnh tng ng vi dng dao ng th i theo mi phng nh sau:
Trong : Fj,i: lc ngang tc dng ln tng th j theo mi phng ng vi dng dao ng ring th i Mi: khi lng tp trung ti tng th I ca cng trnh Ui,j: gi tr chuyn v theo mi phng trn mt bng ti im t trng lng th j ca dao ng th i T hp s dao ng cn xt Khi cc dng dao ng ang xt n tha mn iu kin v c lp tuyn tnh nh trn th gi tr ln nht E (ni lc, chuyn v) ca h qu ng t c th ly bng:
Trong E: h qu ca tc ng ng t ang xt. Ei: gi tr ca h qu tc ng ca ng t ny do dng dao ng ring th i gy ra k: s dng dao ng cn xtCng trnh xy dng Qun 2, TP. H Ch Minh theo Ph lc I Bng phn vng gia tc nn theo a danh hnh chnh ca TCXDVN 375-2006 th nh gia tc nn agR c xc nh nh sau:
Gia tc nn
Bng 6.16 Bng tra thng s t nnLoai nn tSTB (s)TC (s)TD (s)
D1.350.20.82
Trong : S la h s nn. TB (s) la gii han di cua chu ky, ng vi oan nm ngang cua ph phan ng gia tc. TC (s) la gii han trn cua chu ky, ng vi oan nm ngang cua ph phan ng gia tc. TD (s) la gia tri xac inh im bt u cua phn phan ng dich chuyn khng i trong ph phan ng
Bng 6.17 Kt qu tng cc trng lng hu hiu ca cc mode dao ngModePeriodUXUYSumUXSumUY
11.9992549.25480.005849.25480.0058
21.9266110.2642.193759.51882.1995
31.908620.296560.154659.815362.3541
40.606990.08660.004659.901962.3587
50.52101013.585559.901975.9442
60.520250.00410.000859.90675.945
70.4761514.71970.000174.625675.9451
80.326490.01460.000874.640375.9458
90.250740.00034.155674.640580.1014
100.209730.59730.000275.237880.1016
110.208494.56180.000479.799580.102
120.156440.00052.382379.800182.4842
130.148360.00040.000379.800582.4845
140.12512.67030.000682.470882.4851
Theo kt qu Etabs, phng X xt 4 Mode, phng Y xt 4 Mode S liu tnh ton: t nn: D S = 1.35, TB = 0.2s , TC = 0.8s , TD = 2s H s tm quan trng = 1.0 Cng trnh ti qun 10 ag = 0.0856 1.0 9.81 = 0.8397 H s ng s q = 3.9Bng 6.18 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng th 1Tng jTrng lngX1,jX1,jWjX1,j2WjFx,1 (kN)
Wj (kN)
mi408.930.01164.740.05517.77
thng8923.590.011299.941.1194374.48
T169793.880.0106103.821.1004388.99
T159793.880.0197.940.9794366.97
T149793.880.009391.080.8471341.28
T139793.880.008785.210.7413319.26
T129793.880.00878.350.6268293.58
T119875.560.007372.090.5263270.12
T109958.770.006665.730.4338246.28
T99958.770.005857.760.335216.43
T89958.770.005150.790.259190.31
T79958.770.004443.820.1928164.19
T610055.280.003737.200.1377139.40
T510154.090.003131.480.0976117.95
T410154.090.002424.370.058591.31
T310154.090.001818.280.032968.48
T210154.090.001313.200.017249.46
T110288.750.00088.230.006630.84
lng12293.560.00033.690.001113.82
trt17787.6800.0000.00
hm16068.8900.0000.00
215123.10987.727.5679
Wx1= 128911.7Tnh Sd(T1) T1=2.012sSd=0.029Fx,1=Sd(T1)Wx,1=3700.92 kN%M=59.92 %
Bng 6.19 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng th 7Tng jTrng lng Wj (kN)X7,jX7,jWjX7,j2WjFx,7 (kN)
mi408.93-0.0131-5.360.0702-22.82
thng8923.59-0.012-107.081.285-456.22
T169793.88-0.0093-91.080.8471-388.06
T159793.88-0.0065-63.660.4138-271.22
T149793.88-0.0037-36.240.1341-154.39
T139793.88-0.0009-8.810.0079-37.55
T129793.880.001716.650.028370.94
T119875.560.004140.490.166172.51
T109958.770.006261.740.3828263.06
T99958.770.007877.680.6059330.95
T89958.770.00989.630.8067381.86
T79958.770.009695.600.9178407.32
T610055.280.009797.540.9461415.55
T510154.090.009293.420.8594398.00
T410154.090.008384.280.6995359.07
T310154.090.007172.090.5119307.15
T210154.090.005555.850.3072237.94
T110288.750.003839.100.1486166.57
lng12293.560.001720.900.035589.04
trt17787.680.00023.560.000715.16
hm16068.890.00011.610.00026.85
215123.07537.909.1747
Wx7= 31535.8Tnh Sd(T7) T7=0.476 sSd=0.073Fx,7=Sd(T7)Wx,7=2291.68 kN%M=14.66 %
Bng 6.20 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng th 11Tng jTrng lng Wj (kN)X11,jX11,jWjX11,j2WjFx,11 (kN)
mi408.930.01154.700.05413.00
thng8923.590.010190.130.910249.20
T169793.880.006260.720.376167.89
T159793.880.00219.590.03954.16
T149793.88-0.002-19.590.039-54.16
T139793.88-0.0053-51.910.275-143.52
T129793.88-0.0076-74.430.566-205.81
T119875.56-0.0085-83.940.714-232.10
T109958.77-0.0079-78.670.622-217.53
T99958.77-0.006-59.750.359-165.21
T89958.77-0.0031-30.870.096-85.36
T79958.770.00043.980.00211.01
T610055.280.00440.220.161111.21
T510154.090.00771.080.498196.53
T410154.090.00991.390.822252.68
T310154.090.009798.490.955272.33
T210154.090.00991.390.822252.68
T110288.750.007274.080.533204.83
lng12293.560.003644.260.159122.37
trt17787.680.000610.670.006429.51
hm16068.890.00023.210.000648.89
215123.07304.748.01
Wx,11= 11595Tnh Sd(T11) T11=0.208 sSd=0.073Fx,11=Sd(T11)Wx,11=842.6 kN%M=5.39 %
Bng 6.21 Kt qu tinh ton ti trng ng t theo phng X ng vi dng dao ng th 14Tng jTrng lng Wj (kN)X14,jX14,jWjX14,j2WjFx,14 (kN)
mi408.93-0.0119-4.870.058-10.33
thng8923.59-0.01-89.240.892-189.42
T169793.88-0.0041-40.150.165-85.24
T159793.880.00219.590.03941.58
T149793.880.006967.580.466143.45
T139793.880.009290.100.829191.26
T129793.880.008583.250.708176.71
T119875.560.00549.380.247104.81
T109958.77-0.0002-1.990.0004-4.23
T99958.77-0.0053-52.780.280-112.04
T89958.77-0.0089-88.630.789-188.14
T79958.77-0.0098-97.600.956-207.17
T610055.28-0.0076-76.420.581-162.22
T510154.09-0.0031-31.480.098-66.82
T410154.090.002424.370.05851.73
T310154.090.007374.120.541157.35
T210154.090.01101.541.015215.54
T110288.750.0099101.861.008216.22
lng12293.560.00673.760.443156.57
trt17787.680.001119.570.02241.53
hm16068.890.00034.820.0014510.23
215123.07226.789.20
Wx,14= 5592.3 KNTnh Sd(T14) T14=0.125 sSd=0.086Fx,14=Sd(T14)Wx,14=481.4 kN%M=2.59 %%M=82.57%
Bng 6.22 Kt qu tinh ton ti trng ng t theo phng Y ng vi dng dao ng th 3Tng jTrng lngY3,jY3,j*WjY3,j^2*WjFy,3 (kN)
Wj (kN)
mi408.930.01194.870.057918.24
thng8923.590.0117104.411.2215391.34
T169793.880.0111108.711.2067407.48
T159793.880.0106103.821.1004389.12
T149793.880.0197.940.9794367.10
T139793.880.009492.060.8654345.07
T129793.880.008785.210.7413319.37
T119875.560.00879.000.632296.13
T109958.770.007372.700.5307272.49
T99958.770.006665.730.4338246.36
T89958.770.005958.760.3467220.23
T79958.770.005150.790.259190.37
T610055.280.004444.240.1947165.83
T510154.090.003737.570.139140.82
T410154.090.00330.460.0914114.18
T310154.090.002323.350.053787.54
T210154.090.001717.260.029364.70
T110288.750.001111.320.012442.42
lng12293.560.00044.920.00218.43
trt17787.680.00011.780.00026.67
hm16068.890000
215123.071094.898.90
Wy,3= 5592.3 KNTnh Sd(T3) T3=1.91 sSd=0.03Fy,3=Sd(T3)Wy,3=4103.9 kN%M=62.63 %
Bng 6.23 Kt qu tinh ton ti trng ng t theo phng Y ng vi dng dao ng th 5Tng jTrng lngY5,jY5,jWjY5,j2WjFy,5 (kN)
Wj (kN)
mi408.930.01235.030.062-20.48
thng8923.590.0114101.731.160-414.17
T169793.880.009391.080.847-370.83
T159793.880.006967.580.466-275.13
T149793.880.004544.070.198-179.43
T139793.880.001918.610.035-75.76
T129793.88-0.0007-6.860.00527.91
T119875.56-0.0032-31.600.101128.66
T109958.77-0.0053-52.780.280214.89
T99958.77-0.0072-71.700.516291.92
T89958.77-0.0086-85.650.737348.69
T79958.77-0.