chuong xib duc hang
DESCRIPTION
DHTRANSCRIPT
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Hnh 1: Nguyn l cng ngh
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Hnh 2: Cu Plougastel tng u tin v thi cng hng nm 1928,n 1944 b ph hu
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Hnh 3: Cu Marne-Thi cng t u tin dng neo c nh vo m
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Hnh 4: Cu Beaucaire dng cp thay cho ct thp thanh
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Hnh 5: Cu Bettingen vi 3 nhp 85+140+85m, vt nhp ln hn
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T thp nin 60 th k 20 tr i, cng ngh ny c s dngrng ri trn th gii.
Hnh 6: Cu Stolmasunset c nhp chnh 301m ln nht th gii hin nay
Hnh 7: Cu Raftsundet c nhp chnh 298m ln th 2 th gii
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Hnh 8: Cu ny c nhp chnh 260m ln th 6 th gii. Chiu di cu 1627m
Hnh 9: Cu Thames Gateway c hnh dng p
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- Vit Nam t nhng nm 70 Hi Phng xy dng 3 cu khungdm: cu Ro, cu Nim, cu An Dng bng cng ngh lp hngnhng do khng c kinh nghim thit k nn xy ra tai nn nghimtrng l cu Ro b sp, cu Nim phi sa cha li bng cch thay cpcng ngoi.-Nhng nm sau ny c bit sau i mi, hng lot cu c ut xy dng theo cng ngh ny v lm ch c n.
Hnh 10: Cu Ph Lng xy dng nm 1995 theo cng ngh ca Nht
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Hnh 11: Cu Sng Gianh c nhp iu kt cu nhp n hon m37.4+58.0+77.8+ 3*120+77.8+ 58.0+ 37.4, cu c kt cu hp c vch
nghing u tin v c xy dng theo cng ngh ca Php
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Hnh 12: Cu Nhn Hi
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425
3
0
0
8
0
0
425300
T3 T4 T5 T6
425
3
0
0
8
0
0
425
Hnh 13: c cc on i xng qua tr
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425
3
0
0
8
0
0
425 425
3
0
0
300 425
8
0
0
T3 T4 T5 T6
Hnh 14: Hp long nhp bin
425
3
0
0
300 425
8
0
0
T4T3 T5 T6
425
3
0
0
8
0
0
425
Hnh 15: Hp long nhp gia
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-Trnh t:+Di chuyn xe c, vn khun ra v tr mi. Trong qu trnh ny
phi m bo di chuyn ng v tr, iu chnh vn khun ng cao thit k, iu chnh tim vn khun ng tim cu nht l khi cunm trn ng cong. Nu tit din hp c sn bn xin th viciu chnh vn khun y v vn khun bn phc tp.
+Lp t cc li ct thp v cc ng rnh. Ct thp cc t phic hn vi nhau. Cc ng rnh bng tn phi b tr ng v tr vbo m cc ch ni phi st sao khng lt va vo trong ngrnh.
+ btng t dm v bo dng m bo pht trin cng .Thng chut ng rnh, lung cc b ct thp vo trong ng. Sau tin hnh cng ct thp v bm va.
+Tho d vn khun, y xe c v pha trc thi cng on tiptheo.
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-Thi gian thi cng mi t thng thng l 7-10 ngy. Thi gian thicng mi t nhanh hay chm l nh gi trinh pht trin cngngh ca n v thi cng.
Cng vic Tin 7 ngy Tin 10 ngy
-Di chuyn gin gio, lp tvn khun
1 1.5
-Lp t ct thp 2 3
- btng 1 1
-Bo dng btng 2 3
Cng ct thp v hon thin 1 1.5
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- i vi cng ngh hng, c th chia kt cu nhp thnh 4 phn c bn:
425
3
0
0
300 425
8
0
0
T4T3 T5 T6
C
425
3
0
0
8
0
0
425
D B A B D B A B D C
+ Phn A: Phn c trn nh tr.+ Phn B: Phn c i xng qua tr bng xe c.+ Phn C: Phn c trn gio.+ Phn D: Khi hp long.
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Thanh ngang
Thanh cho
Lin kt chtTr
Bulng PC32
Hnh 16: M rng nh tr
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Hnh 17: Thi cng t Ko
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Khi k
I I
Khi k Gi chnh
1145 1400 1900 1900 1400 1145
I - I
Hnh 18: Lin kt dm vi tr bng cc thanh thp cng cao
Hnh 19: Dng 1 hoc 2 tr tm
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Hnh 20: Dng tr bng 2 tng mng
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Hnh 21: Khi k tm trn nh tr v sau khi tho b
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Tim gi cu
Chi tit B
N3 DL 32
Chi tit C
N2 DL 32Chi tit A
N1 DL 32
Chi tit A
Lui thp L1
Lui thp L2
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ng gen N10 84/89
Lui thp L1
ng gen N10 69/72
Hnh 22: Chi tit neo thp vo nh tr
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Hnh 23: Cc thanh thp PC cng cao
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Hnh 24: Xe c
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MAINRAILS
HYDRAULICCYLINDERS
PULL DOWN CYLINDERS
LAUNCHING CYLINDERS
MAIN CYLINDERS
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FRONT & REARBOOGIES
MAINRAILS
HYDRAULICCYLINDERS
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FRONT & REARBOOGIES
MAINRAILS
HYDRAULICCYLINDERS
MAINFRAMEWORK
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FRONT & REARBOOGIES
MAINRAILS
HYDRAULICCYLINDERS
MAINFRAMEWORK
FRONT & REARFRAMEWORK
BOTTOMFRAMEWORK
CROSSARMS
INTERNALFRAMEWORK
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FRONT & REARBOOGIES
MAINRAILS
HYDRAULICCYLINDERS
MAINFRAMEWORK
FRONT & REARFRAMEWORK
BOTTOMFRAMEWORK
CROSSARMS
INTERNALFRAMEWORK
EXTERNALFORMWORK
BOTTOMFORMWORK
INTERNALFORMWORK
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FRONT & REARBOOGIES
MAINRAILS
HYDRAULICCYLINDERS
MAINFRAMEWORK
FRONT & REARFRAMEWORK
BOTTOMFRAMEWORK
CROSSARMS
ENDFORMWORK
WORKINGPLATFORMS
INTERNALFRAMEWORK
EXTERNALFORMWORK
BOTTOMFORMWORK
INTERNALFORMWORK
Hnh 25: Lp dng xe c
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-Cc t tip theo c thi cng i xng qua tr t t K1 chon t cui cng ca mt tha theo chu trnh lp i lp li nhsau:
+Lp t (hoc di chuyn) v iu chnh xe c.+Lp t ct thp thng v ng ghen ca cp DL.+ v bo dng btng.+Lun v cng ko cp ng sut trc.
-Chiu di khi c c th t 3-6m. N ph thuc nng lc ca xec, chiu di ngn khi gn tr cu v chiu di ln hn khi gnkhong gia nhp.-Khi thi cng xong 1 cp t no th cng cp DL t u mtny sang u mt kia. Khi thi cng phi theo di cht ch vng, s lng b cp ti mi t t nht mi sn c 1 b ccng v neo vo cui t. Sau khi cng xong phi tin hnh bmva ngay.
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Hnh 26: Thi cng trngin gio c nh
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Hnh 27: Thi cng trn gin gio treo
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Hnh 28: Thi cng khi hp long
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d1 a l lal ll a al d2
l1 l2 l3 l4
Hnh 29: B tr s theo cng ngh c hng
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Hnh 30: Cc dng bin di ca dm
( ) ncppX LXhHHh =
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( )
( )
==
+==
34
123
3112
65.062.02
2175.0
LLLLL
LLLL
Hnh 31: Xc nh chiu di nhp khi chiu cao nhpbin khng thay i
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( ) 12 7.065.0 LL =
Hnh 32: Xc nh chiu di nhp khi chiu cao ccnhp thay i
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1300
5
6
4
500
2
2
0 4050
1510
5
5
0
325400
450 450
2
5
0
1700
5
6
0
450 400
45
3245
580300
2
8
5
850 850
8
0
0
125 375 425 75 350
2
0
1
0
0
50
a) b)
c)
d)
1080 1080
2160
5
4
0
495 1170 495
1
8
0
150 150
1800
3
6
0
650
1300
e)
f)
Hnh 33: Cc dng tit din ngang
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Hnh 35: Xc nh kch thc tit din ngang
Hnh 34: Tng cng chu lc ca bn mt cu
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Hnh 36: Thay i b dy bin di
xh
cpp LL
tttt 3333
=
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PTS
Hnh 37: V d xc nh kch thc dm
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Hnh 38
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Hnh 39: Cp hng
Hnh 40: Cp nhp
Hnh 41: Cp lin tc
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Hnh 42: Vu neo cp nhp
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Hnh 43: Cp lin tc
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Hnh 44: Cp hng chu mmen m
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Hnh 45: Cp nhp chu mn dng
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Hnh 46: S kt cu dm 5 nhp tnh theo cng ngh c hng cn bng
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Giai on 1: c i xng qua tr
xxx
x
x
x x
x
x
x
x x
x
x
x
x
xx
x
x
x
xx
x
xxx
x x x x
xx x
x
Giai on 2: Tho d xe c
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Giai on 3: Hp long nhp bin
HLvk_12
_1HL 2 vk HLvk
1_2
1_HL vk2
Giai on 4: Cng cp mmen dng nhp bin
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q 12_
DC
vk HL2_1
HLvk DCq
Giai on 5: H gin gio nhp bin
O O
HLvk2_1
vk2 HL1
vk1_2 HLHL
12 vk
Giai on 6: Tho ngm tr v tho vn khun hp long nhp bin
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HLvk_1_1
2 vk HL 2 HL1_
vk21_2 vk HL
Giai on 7: Hp long nhp 2 v 4
Giai on 8: Cng cp mmen dng nhp 2 v 4
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O O
HLvk21_
21_
vk HL 2_1
HLvk2_1
vk HL
Giai on 9: Tho ngm tr v vn khun hp long nhp 2 v 4
Giai on 10: Hp long nhp gia
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Giai on 11: Cng cp mmen dng nhp gia
HLvk2_1
2 vkHL_1
Giai on 12: Tho vn khun hp long nhp gia
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q DW
Giai on 13: Thi cng cc lp mt cu
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Hnh 47: S tnh ton n inh cnh hng mt tha
20.1l
g
MM
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Hnh 48: S tnh n nh cnh hng theo AASHTO
50.1l
g
MM
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Hnh 49
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Hnh 50
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Hnh 51
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Thank you Thank you for for
Your Attention!Your Attention!
- i vi cng ngh hng, c th chia kt cu nhp thnh 4 phn c bn: