CFVR2709 - Shear checking according to AS3600
Check a reinforced concrete beam subjected to shear force according to AS3600
A beam which is fixed at the right and simply supported at the left, has a rectangular concrete reinforced section and it is subjected to a uniform distributed load of 6.75 Mp/m.
The aim of the example is to obtain the check criterion according to AS3600.
Element types used in the model: BEAM3 Needed CivilFEM Modules: |
|
| Model Statistics | |
| Number of elements | 20 |
| Number of nodes | 21 |
| Number of civil materials | 2 |
| Number of cross sections | 1 |
| Number of shell vertices | 0 |
Log file: CFVR2709.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR2709' /TITLE,%NomFile%, SHEAR CHECKING ACCORDING TO AS3600 ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,,LENG,M ~UNITS,,TIME,S ~UNITS,,FORC,MP ~CODESEL,EC3-92,AS3600,,,EC8-94 ! Preprocessor /PREP7 ! Parameters L=10 ! Length between supports, in m b=.3 ! Cross-section width in m. h=.5 ! Depth in m. Q=4.5*1.5 ! Uniform distributed load in Mp/m ! Material Definition ~CFMP,3,LIB,CONCRETE,ACI,fc_4500 ~CFMP,4,LIB,REINF,ACI,fy_60000 ! Element Type Definition ET,1,Beam3 ! Element Type 1: 2D Beam ! Cross-section definition ~CSECDMS,2,REC,3,0.5,0.3 ! Reinforcement definition ~RNFDEF,2,1,4,4,,,0.6368E-02 ! Bot. reinf. for bending ~RNFDEF,2,2,4,2,,,0.2283E-02 ! Top reinf. for bending ~RNFDEF,2,SHEAR,4,,,.00128 ! Shear reinf. ! Code properties definition ~SECMDF,2,AS3600PR,REC,,5e-002 ! Beam properties ~BMSHPRO,1,BEAM,2,2,,,3,0,0,Beam properties ! Model MAT,3 N,1 ! Nodes input N,21,L FILL,1,21 E,1,2 ! Elements input EGEN,20,1,1,1 D, 1, , , , , ,UX,UY ! Boundary conditions D,21, , , , , ,UY FINISH /SOLU ! Entering the solution processor SFBEAM,ALL,1,PRES,Q f,10,fx,20 f,21,fx,-10 SOLVE ! Calculation FINISH /POST1 ! Entering the postprocessor ! Postprocessor ~CFSET,,1,1 ! Read first load step ! Shear in Y checking ~CHKCON,SHT,SHEAR !-------------------------------------------------------------------------------------- ! DATA CHECK !-------------------------------------------------------------------------------------- ! Data comparison number NComp = 11 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) = 'VUMAX' LABEL(2,1) = 'BETA1' LABEL(3,1) = 'BETA2' LABEL(4,1) = 'VUC' LABEL(5,1) = 'VUS' LABEL(6,1) = 'VU' LABEL(7,1) = 'CRTVUMAX' LABEL(8,1) = 'CRTVU' LABEL(9,1) = 'CRT_TOT' LABEL(10,1) = 'BETA2' LABEL(11,1) = 'VUC' ! Correct values VALUE(1,1)=86.038 VALUE(2,1)=1.265 VALUE(3,1)=1.046698333 VALUE(4,1)=7.492416176 VALUE(5,1)=24.2980 VALUE(6,1)=31.79040018 VALUE(7,1)=0.56031 VALUE(8,1)=1.516630349 VALUE(9,1)=1.516630349 VALUE(10,1)=0.813206667 VALUE(11,1)=5.821049475 ! Comparison ~CFGET,VALUE(1,2),ELEMENT,20,RESULT,VUMAX,J ~CFGET,VALUE(2,2),ELEMENT,20,RESULT,BETA1,J ~CFGET,VALUE(3,2),ELEMENT,20,RESULT,BETA2,J ~CFGET,VALUE(4,2),ELEMENT,20,RESULT,VUC,J ~CFGET,VALUE(5,2),ELEMENT,20,RESULT,VUS,J ~CFGET,VALUE(6,2),ELEMENT,20,RESULT,VU ,J ~CFGET,VALUE(7,2),ELEMENT,20,RESULT,CRTVUMAX,J ~CFGET,VALUE(8,2),ELEMENT,20,RESULT,CRTVU ,J ~CFGET,VALUE(9,2),ELEMENT,20,RESULT,CRT_TOT,J ~CFGET,VALUE(10,2),ELEMENT,1,RESULT,BETA2,I ~CFGET,VALUE(11,2),ELEMENT,1,RESULT,VUC,I ! Warning and error tolerances *DO,II,1,NComp TOLER(II, 1)= 1E-2 $ TOLER(II, 2)= 1E-2 *ENDDO !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| VUMAX | 86.038 | 86.038 | 1.000 | 0.01 |
| BETA1 | 1.265 | 1.265 | 1.000 | 0.01 |
| BETA2 | 1.0467 | 1.0467 | 1.000 | 0.01 |
| VUC | 7.4924 | 7.4921 | 1.000 | 0.01 |
| VUS | 24.298 | 24.298 | 1.000 | 0.01 |
| VU | 31.79 | 31.79 | 1.000 | 0.01 |
| CRTVUMAX | 0.56031 | 0.56039 | 1.000 | 0.01 |
| CRTVU | 1.5166 | 1.5166 | 1.000 | 0.01 |
| CRT_TOT | 1.5166 | 1.5166 | 1.000 | 0.01 |
| BETA2 | 0.81321 | 0.81321 | 1.000 | 0.01 |
| VUC | 5.821 | 5.8208 | 1.000 | 0.01 |
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