CFVR8979 - Bending + Axial force design according to ACI 318 14
Design this equivalent reinforced concrete beam, subjected to Bending + Axial force according to ACI 318 14, simulating a 1x1 m2 shell.
A fixed concrete shell is subjected to a list of axial forces and beding moments, in Z axis, from the CFVR0969.FM file.
The aim of the example is to obtain the reinforcement factor according to ACI 318 14. A spiral reinforcement will be disposed
CFVR8979.FM file is needed to run this test case.
Element types used in the model: BEAM3 Needed CivilFEM Modules: |
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| Model Statistics | |
| Number of elements | 25 |
| Number of nodes | 26 |
| Number of civil materials | 2 |
| Number of cross sections | 1 |
| Number of shell vertices | 0 |
Log file: CFVR8979.DAT
FINISH ~CFCLEAR,,1 NomFile='CFVR8979' /TITLE,%NomFile%, BENDING + AXIAL FORCE CHECKING ACCORDING TO ACI 318 14 ! -------------------------------------------------------------------- ! Initial data ! -------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,SI !m,s,Newton ~CODESEL,EC3-05,ACI_14,EC2-08,,EC8-04 h=1.0 !Heigth b=1.0 !Width NELEM=25 !Number of elements the beam will be divided into ! Preprocessor /PREP7 ! Material Definition ~CFMP,1,LIB,CONCRETE,ACI,fc_6000 ~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,h,b ! Reinforcement definition ~RNFDEF,1,1,2,4,0,1.000E-06,10.000E-03, , , , , , ! Bot Reinf.: Total A.: 100 cm^2 ! Beam & Shell property ~BMSHPRO,1,BEAM,1,1,,,3,1,,,Beam property ! Model Construction N,1,,, ! Nodes input N,NELEM+1,1 FILL,1,NELEM+1 E,1,2 ! Elements input EGEN,NELEM,1,1,1 D,1,ALL ! Boundary conditions /SOLU SOLVE ! Calculation /POST1 ! Postprocessor ~CFSET,,1,1 ! Read first load step ~FMREAD,CFVR8979,FM !File from which diagram points will be taken ! /PREP7 ! ~RNFMDF,1,1,AST,100.000E-06 !Design reinforcement FINISH /POST1 ~DIMCON,2DB, ,0,0,200,0,0,1 !Spiral reinforcement !-------------------------------------------------------------------------------------- ! DATA CHECK !-------------------------------------------------------------------------------------- ! Data comparison number NComp = NELEM 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 *DO,JJ,1,NELEM LABEL(JJ,1) = 'REINFACT_I' *ENDDO ! Correct values *DO,JJ,1,NELEM VALUE(JJ,1)=1.0 *ENDDO ! Comparison ~CFSET,1 ! ALT 1 *DO,JJ,1,NELEM ~CFGET,VALUE(JJ,2), ELEMENT, JJ ,RESULT , REINFACT, I *ENDDO ! Warning and error tolerances *DO,JJ,1,NELEM TOLER(JJ,1)= 0.04*VALUE(JJ,1) $ TOLER(JJ,2)= 0.04*VALUE(JJ,1) *ENDDO !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| REINFACT | 1 | 1 | 1.000 | 0.04 |
| REINFACT | 1 | 0.99365 | 1.006 | 0.04 |
| REINFACT | 1 | 0.99023 | 1.010 | 0.04 |
| REINFACT | 1 | 0.9917 | 1.008 | 0.04 |
| REINFACT | 1 | 0.99316 | 1.007 | 0.04 |
| REINFACT | 1 | 0.96973 | 1.030 | 0.04 |
| REINFACT | 1 | 0.97705 | 1.023 | 0.04 |
| REINFACT | 1 | 0.98096 | 1.019 | 0.04 |
| REINFACT | 1 | 0.98242 | 1.018 | 0.04 |
| REINFACT | 1 | 0.96191 | 1.038 | 0.04 |
| REINFACT | 1 | 0.97656 | 1.023 | 0.04 |
| REINFACT | 1 | 1 | 1.000 | 0.04 |
| REINFACT | 1 | 1 | 1.000 | 0.04 |
| REINFACT | 1 | 1 | 1.000 | 0.04 |
| REINFACT | 1 | 0.99414 | 1.006 | 0.04 |
| REINFACT | 1 | 0.99316 | 1.007 | 0.04 |
| REINFACT | 1 | 0.99316 | 1.007 | 0.04 |
| REINFACT | 1 | 0.99414 | 1.006 | 0.04 |
| REINFACT | 1 | 0.99414 | 1.006 | 0.04 |
| REINFACT | 1 | 1 | 1.000 | 0.04 |
| REINFACT | 1 | 0.99268 | 1.007 | 0.04 |
| REINFACT | 1 | 0.98633 | 1.014 | 0.04 |
| REINFACT | 1 | 0.98535 | 1.015 | 0.04 |
| REINFACT | 1 | 0.98535 | 1.015 | 0.04 |
| REINFACT | 1 | 0.98047 | 1.020 | 0.04 |
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