CFVR1251 - Bending + Axial force checking according to ITER Structural Design Code for Buildings
Check a concrete beam subjected to Bending + Axial force according to ITER Structural Design Code for Buildings
A fixed beam which has a rectangular reinforced concrete section is subjected to an axial compression force of 1875 kN and a bending moment of 280 kN*m.
The aim of the example is to obtain the check criterion according to ITER Structural Design Code for Buildings.
The example is based on "DESIGNERS' HANDBOOK TO ITER", BEEBY AND NARAYANAN, 1995, PAGE 68, EX.5.3
Element types used in the model: BEAM3 Needed CivilFEM Modules: |
|
| 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: CFVR1251.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR1251' /TITLE,%NomFile%, Bending + Axial force checking according to ITER Structural Design Code for Buildings ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,,LENG,M ~UNITS,,TIME,S ~UNITS,,FORC,KN ~CODESEL,EC3-92,ITER,EC2-08,,EC8-04 ! Preprocessor /PREP7 ! Material Definition ~CFMP,1,LIB,CONCRETE,EC2,C30/37 ~CFMP,1,EC2_C,ALP,,0.85 ~CFMP,2,LIB,REINF,EC2,S500 ! Element Type Definition ET,1,Beam3 ! Element Type 1: 2D Beam ! Cross-section definition ~CSECDMS,1,REC,1,0.5,0.3 ! Reinforcement definition ~RNFDEF,1,1,2,2,0,0.05,0.1215E-02 ! Top reinforcement ~RNFDEF,1,2,2,4,0,0.05,0.1215E-02 ! Bottom reinforcement ! Beam & Shell property ~BMSHPRO,1,BEAM,1,1,,,3,1,0,, ! 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 M=280 ! 52 KN vertical lumped force H=-1875 ! 13.33 kN tensile axial force F,5,FX,H F,5,MZ,M SOLVE ! Calculation /POST1 ! Postprocessor ~CFSET,,1,1 ! Read first load step ! Bending + Axial checking for rectangular sections according to ITER ~CHKCON,2DB,,0 !-------------------------------------------------------------------------------------- ! 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)=0.98206207 VALUE(2,1)=0.98206207 ! 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)= 3E-02 $ TOLER( 1, 2)= 5E-02 TOLER( 2, 1)= 3E-02 $ TOLER( 2, 2)= 5E-02 !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| CRTC2D_I | 0.98206 | 0.99838 | 0.983 | 0.05 |
| CRTC2D_J | 0.98206 | 0.99838 | 0.983 | 0.05 |
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