CFVR2717 - Shear design according to AS3600
Design 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 reinforced concrete section and it is subjected to a uniform distributed load of 6.75 Mp/m.
The aim of the example is to obtain the necessary steel amount 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: CFVR2717.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR2717' /TITLE,%NomFile%,SHEAR DESIGN 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,1,LIB,CONCRETE,ACI,fc_4500 ~CFMP,2,LIB,REINF,ACI,fy_60000 ! 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,1,1,2,4,,,0.6368E-02 ! Bot. reinf. for bending ~RNFDEF,1,2,2,2,,,0.2283E-02 ! Top reinf. for bending ~RNFDEF,1,SHEAR,2,,,.1E-4, ! Shear reinf. ! Code properties ~SECMDF,1,AS3600PR,DO_Y,,0.45 ~SECMDF,1,AS3600PR,DO_Z,,0.25 ! Beam properties ~BMSHPRO,1,BEAM,1,,,,3,,,,Beam Properties ! Model 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 /SOLU SFBEAM,ALL,1,PRES,Q SOLVE ! Calculation /POST1 ! Postprocessor ~CFSET,,1,1 ! Read first load step ! Shear in Y design according to AS3600 ~DIMCON,SHT,SHEAR !-------------------------------------------------------------------------------------- ! DATA CHECK !-------------------------------------------------------------------------------------- ! Data comparison number NComp = 6 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) = 'BETA1 ' LABEL(2,1) = 'BETA2 ' LABEL(3,1) = 'CRTVUMAX' LABEL(4,1) = 'VUC' LABEL(5,1) = 'VUS' LABEL(6,1) = 'ASSH' ! Correct values VALUE(1,1)=1.265 VALUE(2,1)=1 VALUE(3,1)=0.56031 VALUE(4,1)=7.158142836 VALUE(5,1)=41.05614288 VALUE(6,1)=0.002162808 ! Comparison ~CFGET,VALUE(1,2),ELEMENT,20,RESULT,BETA1,J ~CFGET,VALUE(2,2),ELEMENT,20,RESULT,BETA2,J ~CFGET,VALUE(3,2),ELEMENT,20,RESULT,CRTVUMAX,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,ASSH,J ! Warning and error tolerances TOLER( 1, 1)= 1E-01 $ TOLER( 1, 2)= 1E-01 TOLER( 2, 1)= 1E-02 $ TOLER( 2, 2)= 1E-02 TOLER( 3, 1)= 1E-01 $ TOLER( 3, 2)= 1E-01 TOLER( 4, 1)= 1E-01 $ TOLER( 4, 2)= 1E-01 TOLER( 5, 1)= 1E-02 $ TOLER( 5, 2)= 1E-02 TOLER( 6, 1)= 1E-05 $ TOLER( 6, 2)= 1E-05 !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| BETA1 | 1.265 | 1.265 | 1.000 | 0.1 |
| BETA2 | 1 | 1 | 1.000 | 0.01 |
| CRTVUMAX | 0.56031 | 0.56039 | 1.000 | 0.1 |
| VUC | 7.1581 | 7.1578 | 1.000 | 0.1 |
| VUS | 41.056 | 41.056 | 1.000 | 0.01 |
| ASSH | 0.0021628 | 0.0021628 | 1.000 | 1e-005 |
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