CFVR1227 - Biaxial Bending + Axial force checking according to Eurocode 2 (1991)
check a reinforced concrete beam subjected to Biaxial Bending + Axial force according to Eurocode 2 (1991)
A fixed beam which has a T reinforced concrete section is subjected to a bending moment of 30 m*Mp on the Z axis direction(first load step) and a bending moment of 40 m*Mp on the Y axis direction(second load step).
The aim of the example is to obtain the check criterion according to Eurocode 2 (1991).
Element types used in the model: BEAM4 Needed CivilFEM Modules: |
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| 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: CFVR1227.DAT
FINISH ~cfclear,,1 NomFile='CFVR1227' /TITLE,%NomFile%, Biaxial BENDING + AXIAL FORCE CHECKING EC2 ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,,LENG,M ~UNITS,,TIME,S ~UNITS,,FORC,MP ~CODESEL,EC3-92,EC2-91,EC2-91,,EC8-94 ! Parameters *DIM,Dir,CHAR,2 *DIM,Moment,ARRAY,2 *DIM,CRT_3D,ARRAY,2 *DIM,CRT_2D,ARRAY,2 Dir(1)='Z','Y' Moment(1)=30.0,40.0 ! CivilFEM Preprocessor /PREP7 ! Material Definition ~CFMP,1,LIB,CONCRETE,EC2,C25/30 ~CFMP,2,LIB,REINF,EC2,S500 ! Element Type Definition ET,1,Beam4 ! Element Type 1: 3D Beam ! Cross-section definition ~CSECDMS,1,T,1,0.5,0.2,0.45,0.15 ! Reinforcement definition ~RNFDEF,1,1,2,2,0,0.046,0.5120E-02 ! Beam & Shell property ~BMSHPRO,1,BEAM,1,1,,,4,1 ! 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 ! Boundary conditions *DO,II,1,2 /SOLU FDELE,ALL,ALL F,5,M%Dir(II)%,Moment(II) SOLVE ! Calculation /POST1 ! CivilFEM Postprocessor ~CFSET,,1 !Read first load step ! Bending + Axial checking according to EC2 (3DB) ~CHKCON,3DB ~PLLSCON,CRT_TOT *GET,CRT_3D(II),ELEM,4,ETAB,CFETAB_I ! Bending + Axial checking according to EC2 (2DB) ~CHKCON,2DB,,II-1 ~PLLSCON,CRT_TOT *GET,CRT_2D(II),ELEM,4,ETAB,CFETAB_I *ENDDO !-------------------------------------------------------------------------------------- ! 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 *DO,II,1,NComp ! Labels LABEL(II,1) = 'CRT3D_%II%' ! Correct values VALUE(II,1)=CRT_2D(II) ! Comparison VALUE(II,2)=CRT_3D(II) ! Warning and error tolerances TOLER( II, 1)= 1.0E-01 $ TOLER( II, 2)= 1.0E-01 *ENDDO !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| CRT3D_1 | 0.42592 | 0.42586 | 1.000 | 0.1 |
| CRT3D_2 | 3.3483 | 3.3035 | 1.013 | 0.1 |
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