CFVR7227 - Torsion design according to ACI 349

Element types used in the model: BEAM4

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

   FINISH
  ~CFCLEAR,,1
   NomFile='CFVR7227'
  /TITLE,%NomFile%, TORSION DESIGN ACCORDING TO ACI 349

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
 ! CivilFEM SETUP
~CFACTIV,NUCL,Y
~UNITS,,LENG,M
~UNITS,,TIME,S
~UNITS,,FORC,MP
~CODESEL,EC3-92,ACI349,,,EC8-94

! Preprocessor
  /PREP7

! Parameters
  L=1              ! Length in m
  b=0.3
  h=0.8
  T=3*1.6         ! Torsional moment in Mp*m
  Q=10*1.6        ! Maximum concomitant design shear force in Mp

! Material Definition
 ~CFMP,1,LIB,CONCRETE,ACI,fc_4500
 ~CFMP,2,LIB,REINF,ACI,fy_60000

! Element Type Definition
  ET,1,Beam4                           ! Element Type 1: 3D Beam

! Cross-section definition
 ~CSECDMS,1,BOX,1,0.8,0.3,0.1,0.1

 ! Reinforcement definition
 ~RNFDEF,1,TORSION,2,3.03e-4, , , ,3.27e-4, ,
! Beam & Shell properties
 ~BMSHPRO,1,BEAM,1,1,,,4,0,0,,Beam property

! Model Construction
  N,1                                  ! Nodes input
  N,5,L
  FILL,1,5
  E,1,2                                ! Elements input
  EGEN,4,1,1,1
  D,1,ALL                              ! Boundary conditions

/SOLU
  F,5,FY,-Q
  F,5,MX,T
  SOLVE               ! Calculation

/POST1
 ~CFSET,,1,1          ! Read first load step

! Torsion checking according to ACI 349
  ~CHKCON,SHT,TORSION, , , ,1

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 7
  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) = 'CRTTC'
  LABEL(2,1) = 'TN'
  LABEL(3,1) = 'ALT'
  LABEL(4,1) = 'TFI'
  LABEL(5,1) = 'CRTALT'
  LABEL(6,1) = 'CRTTN'
  LABEL(7,1) = 'CRT_TOT'

! Correct values
  VALUE(1,1)=0.53
  VALUE(2,1)=3.44
  VALUE(3,1)=5.696e-4
  VALUE(4,1)=2.925
  VALUE(5,1)=1.74
  VALUE(6,1)=1.39
  VALUE(7,1)=1.74

! Comparison
  ~PLLSCON,CRTTC
  *GET,VALUE(1,2),ELEM,3,ETAB,CFETAB_J
  ~PLLSCON,TN
  *GET,VALUE(2,2),ELEM,3,ETAB,CFETAB_J
  ~PLLSCON,ALT
  *GET,VALUE(3,2),ELEM,3,ETAB,CFETAB_J
  ~PLLSCON,TFI
  *GET,VALUE(4,2),ELEM,3,ETAB,CFETAB_J
  ~PLLSCON,CRTALT
  *GET,VALUE(5,2),ELEM,3,ETAB,CFETAB_J
  ~PLLSCON,CRTTN
  *GET,VALUE(6,2),ELEM,3,ETAB,CFETAB_J
  ~PLLSCON,CRT_TOT
  *GET,VALUE(7,2),ELEM,3,ETAB,CFETAB_J

! Warning and error tolerances
  TOLER( 1, 1)= 1E-02 $ TOLER( 1, 2)= 1E-02
  TOLER( 2, 1)= 1E-02 $ TOLER( 2, 2)= 1E-02
  TOLER( 3, 1)= 1E-05 $ TOLER( 3, 2)= 1E-05
  TOLER( 4, 1)= 1E-02 $ TOLER( 4, 2)= 1E-02
  TOLER( 5, 1)= 1E-02 $ TOLER( 5, 2)= 1E-02
  TOLER( 6, 1)= 1E-02 $ TOLER( 6, 2)= 1E-02
  TOLER( 7, 1)= 1E-02 $ TOLER( 7, 2)= 1E-02
!--------------------------------------------------------------------------------------
! Results comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC