CFVR6103 - Pile Wailing

Rectangular wailing sustained by a mesh of piles

A rectangular wailing (4.9x2.4x2.5 m),is sustained by 14 piles separated 0.7 meters within each other. The piles are located to 0.35 meters in relation to the slab. The structure is submitted to:

Axial force : 2123 Mp
X axis moment:193 Mp
Y axis moment:53.6 Mp. The aim of this example is to calculate the maximum axial force supported by the piles.

Element types used in the model: BEAM4, SHELL43, SURF154, LINK8

Needed CivilFEM Modules:
Geotechnical Module
Bridges and Civil Non Linearities Module
Advanced Prestressed Concrete Module

The example cannot be launched on an educational license.

KEYWORDS

Materials

Geotechnics

Piles

Model Statistics
Number of elements	3562
Number of nodes	3598
Number of civil materials	4
Number of cross sections	1
Number of shell vertices	1

Log file: CFVR6103.DAT

FINISH
~CFCLEAR,,1
 NomFile='CFVR6103'
/TITLE, %NomFile%,Rectangular Pile Wailing

! -----------------------------------------------------------------------------------
! CivilFEM Setup:Codes,units and modules
! -----------------------------------------------------------------------------------
~CODESEL,EC3-92,EHE-98,EHE-98,,EC8-04    ! Set EHE codes
~UNITS,,FORC,MP
~CFACTIV,GETC,Y

! -----------------------------------------------------------------------------------
! Parameters
! -----------------------------------------------------------------------------------
Loc_Pil_X=1.05
Loc_Pil_Y=-2.1
Loc_Pil_Z=1.25

! ------------------------------------------------------------------------------------
! Setup
! ------------------------------------------------------------------------------------
/PREP7

! Materials
~CFMP,1,LIB,CONCRETE,EHE,HA-30
~CFMP,2,LIB,REINF,EHE,B500S

~CFMP,3,LIB,SOIL,,SW
~CFMP,3,SOIL,SPT,,20
~CFMP,3,SOIL,PHIMCEFF,,33

~CFMP,4,LIB,SOIL,,SW
~CFMP,4,SOIL,SPT,,50
~CFMP,4,SOIL,PHIMCEFF,,41

! terrain
~TERDEF,1,NEW,2,,Z,,,,,,sand
~TERDEF,1,LAYER,1,3,6 ,-1 ,CLMB
~TERDEF,1,LAYER,2,4,25 ,-1 ,CLMB


~GTPD,CFVR6103,rwCF

!---------------------------------------------------------------------------------------
! DATA CHECK
!---------------------------------------------------------------------------------------
! Data comparison number
  NComp = 1
  NComp_ch = 0

! Matrix dim.
  *DIM,LABEL,CHAR,Ncomp,1
  *DIM,LABEL_CH,CHAR,Ncomp_ch,1
  *DIM,VALUE,,Ncomp,3
  *DIM,VALUE_CH,CHAR,Ncomp_ch,3
  *DIM,TOLER,,Ncomp,2

! Labels
  LABEL(1,1) = 'FX'

! Correct values
  VALUE(1,1)= -86.47

! Comparison
 /POST1
 ~CFSET,,1
 ~PLLSFOR,F,X,-1,
 NSEL,S,LOC,Z,Loc_Pil_Z
 NSEL,R,LOC,X,Loc_Pil_X
 NSEL,R,LOC,Y,Loc_Pil_Y
 ESLN,S
 ESEL,R,TYPE,,EPIL_
 *GET,ELE_AXIL,ELEM,,NUM,MAX
 ~CFGET,VALUE(1,2),ELEMENT,ELE_AXIL,FORCE,FX,J

! Warning and error tolerances
 TOLER( 1, 1)= 0.1E+01 $ TOLER( 1, 2)= 0.1E+01
! -----------------------------------------------------------------------------------
! Results Comparison
! -----------------------------------------------------------------------------------
COMPARA.MAC

Results

Label	Target	CivilFEM	Ratio	Tolerance
FX	-86.47	-85.909	1.007	1

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CFVR6103 - Pile Wailing

Rectangular wailing sustained by a mesh of piles

Results