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CFVR4019 - Reinforced concrete checking according to GB 50010 Chinese code

Biaxial bending & axial force checking.

A concrete cantilever beam with rectangular shape section and reinforcement uniformly distributed is subjected to an axial compression force and moments at free end.
Determine the total criterion 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: CFVR4019.DAT


   FINISH
  ~CFCLEAR,,1
   NomFile='CFVR4019'
 /TITLE, %NomFile%, BIAXIAL BENDING + AXIAL FORCE CHECKING GB50010

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM SETUP
 ~UNITS,,LENG,M
 ~UNITS,,TIME,S
 ~UNITS,,FORC,MP
 ~CODESEL,,GB50010

! Preprocessor
  /PREP7

! 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: 2D Beam

! Cross-section definition
 ~CSECDMS,1,REC,1,0.45,0.45

! Reinforcement definition
 ~RNFDEF,1,1,2,2,0,0.046,0.256E-2
 ~RNFDEF,1,2,2,4,0,0.046,0.256E-2
! Beam & Shell property
 ~BMSHPRO,1,BEAM,1,1,,,4,1,0,,Beam property

! Model Construction
  N,1                                   ! Nodes input
  N,5,5
  FILL,1,5

  E,1,2                                 ! Elements input
  EGEN,4,1,1,1

  D,1, , , , , ,ALL                     ! Constraint conditions

/SOLU
  M1=40.00           ! 40.00 m*Mp bending moment
  M2=30.00           ! 30.00 m*Mp bending moment
  H=-70.82           ! 70.82 Mp axial force
  F,5,FX,H
  F,5,MZ,M1
  F,5,MY,M2
  SOLVE               ! Calculation

/POST1

! Postprocessor
  ~CFSET,,1,1       ! Read first load step

! Bending + Axial checking for pipe sections according to GB50010
  ~CHKCON,3DB

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data Comparison number
  NComp = 2
  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) = 'CRTC2D_I'
  LABEL(2,1) = 'CRTC2D_J'

! Correct values
  VALUE(1,1)=1.60
  VALUE(2,1)=1.60

! Comparison
 ~PLLSCON,CRT_TOT
 *GET,VALUE(1,2),ELEM,4,ETAB,CFETAB_I
 ~PLLSCON,CRT_TOT
 *GET,VALUE(2,2),ELEM,4,ETAB,CFETAB_J

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

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

Results

LabelTargetCivilFEMRatioTolerance
CRTC2D_I 1.6 1.63470.978 0.05
CRTC2D_J 1.6 1.63470.978 0.05


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