CFVR1258 - Cracking checking according to ITER Structural Design Code for Buildings

check a reinforced concrete beam by cracking according to ITER Structural Design Code for Buildings

A fixed beam which has a rectangular reinforced concrete section is subjected to a bending moment of 300 kN*m on the Y axis direction.
The aim of the example is to obtain the check criterion according to ITER Structural Design Code for Buildings.
This example is based in EXAMPLE 7.3 of the EUROCODE 2 WORKED EXAMPLES of the European Concrete Platform.

Element types used in the model: BEAM44

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
ITER

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: CFVR1258.DAT


  FINISH
  ~CFCLEAR,,1
  NomFile='CFVR1258'
  /TITLE,%NomFile%, Cracking checking according to ITER Structural Design Code for Buildings

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM SETUP
 ~UNITS,SI
 ~CODESEL,EC3-92,ITER,EC2-08,,EC8-04

! Preprocessor
  /PREP7

! Material Definition
 ~CFMP,1,LIB,CONCRETE,EHE,HA-30
 ~CFMP,1,EC2_C,GAMc,,1.0
 ~CFMP,1,EC2_C,ALP ,,1.0
 ~CFMP,2,LIB,REINF,EHE,B500S
 ~CFMP,2,EC2_S,GAMs,,1

! Element Type Definition
  ET,1,Beam44

! Cross-section definition
  ~CSECDMS,1,REC,1,0.6,0.4,,,,,,,1,2
  ~RNFMDF,1,RBDEF,RMAT,2
  ~RNFMDF,1,RBDEF,RKEY,0
  ~RNFMDF,1,1,FI,12
  ~RNFMDF,1,1,N,4
  ~RNFMDF,1,2,FI,24
  ~RNFMDF,1,2,N,6
  ~SECMDF,1,EC2PROP,RHOr,,2712/(400*600)/0.2012,2

! Beam & Shell property
 ~BMSHPRO,1,BEAM,1,1,,,44,,,,

! 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
  Mz = 3e5            ! Mz Bending moment
  My = 0.0            ! My Bending moment
  N  = 0              ! Axial force
  F,5,FX,N
  F,5,MZ,Mz
  F,5,MY,My
  SOLVE               ! Load Step 1

/POST1

! Postprocessor
  ~CFSET,,1,1       ! Read first load step
  ~CHKCON,CRACK, ,0,0.0001,,0.6   ! Alernative 1

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 5
  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)  = 'SRMAX'
  LABEL( 2)  = 'WK'
  LABEL( 3)  = 'SIGMA'
  LABEL( 4)  = 'POS'
  LABEL( 5)  = 'CRT'

! Correct data, obtained data
!--------------------------------------------------------------------------------------
  ! Alternative 1
  ~CFSET,1
  ~PLLSCON,SRMAX,1,
  VALUE( 1,1) = 208.64E-3           $  *GET,VALUE( 1,2),ELEM,3,ETAB,CFETAB_I
  ~PLLSCON,WK,1,
  VALUE( 2,1) = 0.184E-3            $  *GET,VALUE( 2,2),ELEM,3,ETAB,CFETAB_I
  ~PLLSCON,SIGMA,1,
  VALUE( 3,1) = 234e6               $  *GET,VALUE( 3,2),ELEM,3,ETAB,CFETAB_I
  ~PLLSCON,POS,1,
  VALUE( 4,1) = -1                  $  *GET,VALUE( 4,2),ELEM,3,ETAB,CFETAB_I
  ~PLLSCON,CRT_TOT,1,
  VALUE( 5,1) = 0.184E-3/0.0001     $  *GET,VALUE( 5,2),ELEM,3,ETAB,CFETAB_I

! Warning and error tolerances
  TOLER(1,1) = 1E-3                 $  TOLER(1,2) = 1E-3
  TOLER(2,1) = 1.5E-5               $  TOLER(2,2) = 1.5E-5
  TOLER(3,1) = 5E6                  $  TOLER(3,2) = 5E6
  TOLER(4,1) = 1E-3                 $  TOLER(4,2) = 1E-3
  TOLER(5,1) = 1.5E-1               $  TOLER(5,2) = 1.5E-1

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

Results

LabelTargetCivilFEMRatioTolerance
SRMAX 0.20864 0.208651.000 0.001
WK 0.000184 0.00019590.9351.5e-005
SIGMA 2.34e+0082.2931e+0081.020 5e+006
POS -1 -11.000 0.001
CRT 1.84 1.9590.935 0.15


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