fb-multipierv4 pilegroup au 2015 i

7/24/2019 FB-MultiPierv4 PileGroup AU 2015 I

http://slidepdf.com/reader/full/fb-multipierv4-pilegroup-au-2015-i 1/17

1

FB MultiPier v.4

Pile Group ExampleProfessor’s Driven Pile Institute

Utah State Universit ! "une #4$ #%1&

". Brian 'n(erson )*+an(ers,au+urn.e(u-

Department of ivil En/ineerin/ 'u+urn Universit



#

Deep Foun(ations ! FB0MultiPier

Example # 4x4 Pile Group 0 2oosevelt Bri(/e Example

Pre(i3t Defle3tions for ateral oa(s

Lateral Load

(kips)

0

125

250

375

500

625

750

875

1000

Soil

φ 5 6#o

7 5 1#% p3iγ 5 1#% p3f

G 5 8.& 7si

ν 5 %.66

τf 5 &8% psf

9tip 5 6:4 7ips

&& ft

; ft

Pile GroupFD<= 6%> Prestresse(

S?uare4x46D @ spa3in/

Piles Pinne(

ap #4> =hi37 SteelEs 5 #A%%%7si

Rosevelt Bridge Lateral Load Test

0

100

200

300

400

500

600

700

800

900

1000

0 0.5 1 1.5 2 2.5 3 3.5

Deflection (in.)

L a t e r

a l L o a d

( k i p s )

Load Test

#ft



6

Start FB0MultiPier> + sele3tin/ the

short3ut on our (es7top$ or fin( BSI C

FB !MultiPierC FB ! MultiPier> un(erthe Start Menu.

Sele3t FileCe from the menu at the

top to 3reate a ne file.

Fill in the appropriate pro*e3t

information. Sele3t$ for this 3ase$

3hoose Pro+lem =pe Pile an( ap

<nl> Finall set Units to En/lish)mixe( units->. li37 < to 3ontinue.



4

he e(itor in(os ill no appear. =he

top left in(o is the Mo(el Datain(o here most info is entere(. =he

top ri/ht in(o is the Pile E(it in(o

shos the pile /roup in plan. =he +ottom left in(o is the Soil E(it

in(o here the soil strati/raph is

shon. ' 60D vie of the pile /roup isshon in the +ottom ri/ht pane.

' (efault pro+lem is automati3all

loa(e( hi3h ou ill nee( to 3han/e

Sele3t Pile ap> from the Menu.

han/e the num+er of /ri( points to 4 x4.

=he resultin/ pile 3ap ill nee(

a(*ustment for spa3in/ an( pla3ement of

piles. 2i/ht 3li37 in the Pile E(it>in(o an( sele3t '((@2emove Pile$>

3li37 on the 3ap no(e points to a(( pilesto all the no(es.



&

=he spa3in/ ill no nee( to +ea(*uste( to 6( or 6 6%> 3enter0to0

3enter +eteen the piles in +oth

(ire3tions.

2i/ht 3li37 in the Pile E(it

in(o an( sele3t E(it Gri( Spa3in/.>

li37 on the /ri( spa3in/ num+ers to3han/e them. =here is also a ta+le entr

option.

=he resultin/ pile /roup shoul( loo7

smmetri3al an( the 3orre3t spa3in/ )A%in3hes 3enter0to03enter- 3an +e seen in

the +lue num+erin/.



;

=he 3ap is steel. Enter #A%%%7si for the

Houn/’s Mo(ulus$ %.6 for Poisson’s

2atio$ # ft for thi37ness an( unit ei/htof 4&%p3f.

Sele3t Pile> from the Menu. li37

E(it> un(er E(it ross Se3tion.>

=he pile se3tion use( in this analsis is

the FD<= 6%> Stan(ar(. Un(er

Data+ase Se3tion Sele3tion$> 3li37 on2etrieve Se3tion> an( sele3t 6%>

s?uare FD<= Stan(ar( Prestresse(.>



8

han/e the pile len/th to &&ft.

li37 < to 3ontinue.

Un(er Pile to ap onne3tion$> sele3t

Pinne( )not tpi3al +ut is the 3ase for

mo(elin/ the loa( test-. =his 3on3lu(esthe stru3tural input.

Sele3t Soil> from the menu in theMo(el Data pane. ote that the Soil

aer> (rop (on +ox 3ontains thelaers shon in the Soil E(it> pane

+elo.



:

Sin3e e ill +e usin/ a sin/le soil laer

for this example$ sele3t laer # then hitthe (elete 7e to remove the laer.

Set the Soil =pe$ for aer 1$ to

3ohesionless.> Enter =otal Unit ei/ht

e?ual to 1#% p3f. Enter a fri3tion an/le

of 6#o. Set the top of the laer at 0;ftan( the +ottom at !1%%ft )for proper

em+e(ment-. =he ater surfa3e is at %ft.

Un(er Soil aer Mo(els$ use the (rop

(on +ox + ateral> to 3hoose thelateral soil tpe$ in this 3ase$ San(

)<’eill-.



A

li37 E(it.> =he unit ei/ht an(

fri3tion an/le ill +e 3opie( from +efore. Enter the value for su+/ra(e

mo(ulus$ 1#% p3i. li37 <> to

3ontinue.

Un(er Soil aer Mo(els$ use the (rop(on +ox + 'xial> to 3hoose the axial

soil tpe$ in this 3ase$ Driven Pile.

li37 E(it.> =he unit ei/ht an(

fri3tion an/le ill +e 3opie( from

+efore. Enter the value for shear

mo(ulus$ 8.&7si$ Poisson’s 2atio$ %.6$Jerti3al Failure Shear$ &8%psf. li37

<> to 3ontinue.



1%

Un(er Soil aer Mo(els$ use the (rop

(on +ox + =ip> to 3hoose the lateralsoil tpe$ in this 3ase$ Driven Pile.

li37 E(it.> Enter the value for shear

mo(ulus$ 8.&7si$ Poisson’s 2atio$ %.6$'xial Bearin/ Failure$ 6:47ips. li37

<> to 3ontinue.

=he far fiel( or pile /roup intera3tion is

mo(ele( usin/ p0 multipliers. li37 on

the Group +utton to e(it the multipliers.



11

e oul( li7e to set the multipliers to

the (efault value of %.:$ %.4$ %.6$%.#K.%.#.$ %.6. li37 the Defaults

+utton to set the multipliers

ext$ e nee( to spe3if the loa(s on the pile. o$ 3hoose oa(> ta+ in the

mo(el (ata in(o.



1#

<ne loa( 3ases is spe3ifie( + (efault.

In this pro+lem there are : loa( 3ases.

li37 the '(( +utton to a(( a((itionalloa( 3ases.

Sele3t oa( ase 1. In this pro+lem$ thelateral loa( as applie( on the e(/e of

the pile 3ap. 2emove all (efault loa(s.oa( 3ases # throu/h : shoul( have no

loa(s + (efault.

2i/ht 3li37 near the pile /roup in the 6(Jie in(o. Sele3t Pi37in/ o(e

Mouse ontrol>



16

Sele3t oa( ase 1. li37 on the 3enter

no(e on the si(e of the pile 3ap.

o un(er o(e 'pplie($ a ne no(enum+er shoul( appear. li37 '((> to

a(( a loa( there.

Enter 1#& in the x (ire3tion. Hou shoul(see a horiLontal ve3tor pointin/ in the !

x (ire3tion. 2epeat these steps for ea3h

of the remainin/ 8 loa(s #&%$ 68&$ &%%$

;#&$ 8&%$ :8&$ 1%%%.



14

Hou 3an e(it some information usin/ the loa( ta+le

Use the Save 'sK> 3omman( to save

our pro+lem +efore the analsis.

=he next step ill +e to perform theanalsis. li37 on the li/htnin/ +olt i3on

to run the analsis. Hou ill /et a

arnin/ that ou ill for3e a file save$a33ept an( 3ontinue



1&

=he iterative pro3ess of FB0MultiPier

ill +e shon hile the analsis

pro/resses.

<n3e the analsis is 3omplete$ 3li37 on

the 6D 2esults i3on to see a /raphi3al

(epi3tion if the analsis.

In the tool +ar area$ ou 3an sele3t the

loa( 3ase to vie. In the 6D Displa

ontrol pane$ ou 3an sele3t hi3h no(e

to (ispla (ispla3ements or rotations$ asell as the no(al 3oor(inates. ' 6

Dimensional representation of the resultsis shon in the 6D Jie pane.



1;

=he (efle3te( shape for loa( 3ase : is

shon here.

It ma +e useful to rotate$ resiLe$ or

move the mo(el. 2i/ht 3li37 in the 6D

2esults in(o an( 3hoose 6D Mouse

ontrol.

B 3li37in/ the left mouse an( (ra//in/$the mo(el 3an +e rotate( in all

(ire3tions. ol(in/ shift an( left 3li37

(ra//in/ ill translate the mo(el.

ontrol an( left 3li37 (ra//in/ illallo ou to resiLe the mo(el. ote this

also or7s in the 6D Jie in(o ofthe input portion of the pro/ram.



18

ext$ 3li37 on the Pile 2esults +utton in

the tool+ar. =his ill open a series of pile results in(os.

=he pile results in(o is shon. In thePlot Displa ontrol in(o$ sele3t the

?uantities ou oul( li7e to vie plotte(

versus pile (epth. In the Pile Sele3tion

in(o$ sele3t the piles ou oul( li7eto plot.

=he sele3te( ?uantities ill +e 3olor3o(e( ith the sele3te( pile shon in

ea3h of the in(ivi(ual plot in(os.

fb-multipierv4 pilegroup au 2015 i

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