CFVR2712 - Bending + Axial force design according to AS3600
Design a reinforced concrete beam subjected to Bending + Axial force according to AS3600
A fixed beam which has a T reinforced concrete section is subjected to a bending moment of 83.33 ft-kips.
The aim of the example is to obtain the necessary steel amount according to AS3600.
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: CFVR2712.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR2712' /TITLE,%NomFile%, BENDING + AXIAL FORCE DESIGN ACCORDING TO AS3600 ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,BIN !in,sg,Pound force ~CODESEL,EC3-92,AS3600,,,EC8-94 ! Preprocessor /PREP7 ! Material Definition ~CFMP,1,LIB,CONCRETE,ACI,fc_4000 ~CFMP,2,LIB,REINF,ACI,fy_60000 ! Element Type Definition ET,1,Beam4 ! Element Type 1: 3D Beam ! Cross-section definition ~CSECDMS,1,T,1,21.56,10,30,2.5 ! Reinforcement definition ~RNFDEF,1,1,2,2,0,2.56,1 !Total reinf. area =1in^2 ! Member Property ~MEMBPRO,1,AS3600,FI,0.90 ! FI=0.90 ! Beam & Shell property ~BMSHPRO,1,BEAM,1,1,,,4,1,0,,Beam property ! Model N,1 ! Nodes input N,5,200 FILL,1,5 E,1,2 ! Elements input EGEN,4,1,1,1 D,1, , , , , ,ALL ! Boundary conditions FINISH /SOLU M=3000000 ! 250 ft-kips bending moment F,5,MZ,M SOLVE ! Calculation /POST1 ! Postprocessor ~CFSET,,1,1 ! Read first load step ! Bending + Axial design for T sections according to AS3600 ~DIMCON,3DB,,,1,5 !-------------------------------------------------------------------------------------- ! 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)=0.998 VALUE(2,1)=3.135 ! Comparison ~PLLSCON,CRT_TOT *GET,VALUE(1,2),ELEM,4,ETAB,CFETAB_I ~PLLSCON,REINFACT *GET,VALUE(2,2),ELEM,4,ETAB,CFETAB_J ! Warning and error tolerances TOLER( 1, 1)= 5E-02 $ TOLER( 1, 2)= 5E-02 TOLER( 2, 1)= 5E-02 $ TOLER( 2, 2)= 5E-02 !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| CRTC2D_I | 0.998 | 1 | 0.998 | 0.05 |
| CRTC2D_J | 3.135 | 3.1239 | 1.004 | 0.05 |
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