CFVR8933 - Shear checking according to ACI 318 2014
Check a reinforced concrete beam subjected to shear force according to ACI 318 2014
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 check criterion according to ACI 318 2014.
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: CFVR8933.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR8933' /TITLE,%NomFile%, SHEAR CHECKING ACCORDING TO ACI 318 2014 ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,,LENG,M ~UNITS,,TIME,S ~UNITS,,FORC,MP ~CODESEL,,ACI_14 ! 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 ~CFMP,3,ACI_14_C,Lambda ,,0.8 ! 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,ACIPROP,REC,,5e-002 ! Beam and Shell properties ~BMSHPRO,1,BEAM,2,2,,,3,,,,Beam property ! Model Construction 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 /SOLU SFBEAM,ALL,1,PRES,Q F,21,FX,-15 SOLVE ! Calculation /POST1 ! Postprocessor ~CFSET,,1,1 ! Read first load step ! Shear in Y checking according to ACI ~CHKCON,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) = 'VC' LABEL(2,1) = 'VS' LABEL(3,1) = 'VN' LABEL(4,1) = 'VFI' LABEL(5,1) = 'CRTVN' LABEL(6,1) = 'CRT_TOT' ! Correct values VALUE(1,1)=10.95 VALUE(2,1)=24.29 VALUE(3,1)=10.95+24.29 VALUE(4,1)=(10.95+24.29)*0.75 VALUE(5,1)=33.75/(10.95+24.29) VALUE(6,1)=33.75/((10.95+24.29)*0.75) ! Comparison ~CFGET,VALUE( 1,2),ELEMENT,20,RESULT,VC,J ~CFGET,VALUE( 2,2),ELEMENT,20,RESULT,VS,J ~CFGET,VALUE( 3,2),ELEMENT,20,RESULT,VN,J ~CFGET,VALUE( 4,2),ELEMENT,20,RESULT,VFI,J ~CFGET,VALUE( 5,2),ELEMENT,20,RESULT,CRTVN,J ~CFGET,VALUE( 6,2),ELEMENT,20,RESULT,CRT_TOT,J ! Warning and error tolerances TOLER(1,1)= 0.01*VALUE(1,1) $ TOLER(1,2)= 0.01*VALUE(1,1) TOLER(2,1)= 0.01*VALUE(2,1) $ TOLER(2,2)= 0.01*VALUE(2,1) TOLER(3,1)= 0.01*VALUE(3,1) $ TOLER(3,2)= 0.01*VALUE(3,1) TOLER(4,1)= 0.01*VALUE(4,1) $ TOLER(4,2)= 0.01*VALUE(4,1) TOLER(5,1)= 0.001*VALUE(5,1) $ TOLER(5,2)= 0.001*VALUE(5,1) TOLER(6,1)= 0.001*VALUE(6,1) $ TOLER(6,2)= 0.001*VALUE(6,1) !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| VC | 10.95 | 10.951 | 1.000 | 0.1095 |
| VS | 24.29 | 24.298 | 1.000 | 0.2429 |
| VN | 35.24 | 35.249 | 1.000 | 0.3524 |
| VFI | 26.43 | 26.437 | 1.000 | 0.2643 |
| CRTVN | 0.95772 | 0.95747 | 1.000 | 0.0009577 |
| CRT_TOT | 1.277 | 1.2766 | 1.000 | 0.001277 |
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