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CFVR4017 - Reinforced concrete design according to GB 50010 Chinese code

Torsion desing.

A concrete cantilever beam with rectangular shape section and shear & torsion reinforcement is subjected to a vertical load and torsion moment at free end.
Determine the area per unit length of torsional transverse reinforcement and total area of torsional longitudinal reinforcement according to GB 50010.

Element types used in the model: BEAM4

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

The example can be launched on an educational license.
KEYWORDS
Beam
Cross Section
Code Checking/Design
Reinforced Concrete
GB 50010

Model Statistics
Number of elements 4
Number of nodes 5
Number of civil materials 2
Number of cross sections 1
Number of shell vertices 0

Log file: CFVR4017.DAT


  FINISH
  ~CFCLEAR,,1
   NomFile='CFVR4017'
  /TITLE, %NomFile%, TORSION DESIGN ACCORDING TO GB50010
! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM SETUP
  ~UNITS,,LENG,M
  ~UNITS,,TIME,S
  ~UNITS,,FORC,KN
  ~CODESEL,,GB50010

! Preprocessor
  /PREP7

! Parameters
  L=1              ! Length in m
  b=.4             ! Cross-section width in m.
  h=.3             ! Depth in m.
  T=25.            ! Torsional moment in KN*m
  Q=4.7            ! Maximum concomitant design shear force in Mp

! Material Definition
 ~CFMP,1,LIB,CONCRETE,GB50010,C25
 ~CFMP,2,LIB,REINF,GB50010,HRB400
 ~CFMP,2,GB_S    ,GAMs    ,,1.10

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

! Cross-section definition
 ~CSECDMS,1,REC,1,0.3,0.4

! Reinforcement definition
 ~RNFDEF,1,TORSION,2,1e-4, , , ,1e-4, ,

! Beam 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                      ! Constraint conditions

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

/POST1
! Postprocessor
  ~CFSET,,1,1       ! First load step

! Torsion design according to GB50010
  ~DIMCON,SHT,TORSION

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data Comparison number
  NComp = 3
  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) = 'TRD1'
  LABEL(2,1) = 'ASTT'
  LABEL(3,1) = 'ASLT'

! Correct values
  VALUE(1,1)=0.322E2
  VALUE(2,1)=0.564E-3
  VALUE(3,1)=0.732E-3

! Comparison
 ~PLLSCON,TRD1
 *GET,VALUE(1,2),ELEM,3,ETAB,CFETAB_J
 ~PLLSCON,ASTT
 *GET,VALUE(2,2),ELEM,3,ETAB,CFETAB_J
 ~PLLSCON,ASLT
 *GET,VALUE(3,2),ELEM,3,ETAB,CFETAB_J

! Warning and error tolerances
  TOLER( 1,1)= 1E-1 $ TOLER( 1,2)= 1E-1
  TOLER( 2,1)= 1E-5 $ TOLER( 2,2)= 1E-5
  TOLER( 3,1)= 1E-5 $ TOLER( 3,2)= 1E-5

!--------------------------------------------------------------------------------------
! Results comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC

Results

LabelTargetCivilFEMRatioTolerance
TRD1 32.2 32.2460.999 0.1
ASTT 0.0005640.000564450.999 1e-005
ASLT 0.0007320.000731521.001 1e-005


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