!*************************************************************************************! ! TITLE: CFVR5205 - Combinations with prestressed concrete results. ! SUBTITLE: ! ! DESCRIPTION: A prestressed beam is subjected to several load states. ! DESCRIPTION: The model is a fixed-pinned beam of 15 m length. ! DESCRIPTION: ! DESCRIPTION: The beam is made of C16/20 concrete. ! DESCRIPTION: ! DESCRIPTION: The cross section is a rectangular concrete one, 1 x 0.5, which has top and bottom ! DESCRIPTION: reinforcement of S400 steel, with 40 mm for geometrical cover and 28 mm of diameter. ! DESCRIPTION: ! DESCRIPTION: The load states are: ! DESCRIPTION: ! DESCRIPTION: - Load state 1: Self weight ! DESCRIPTION: ! DESCRIPTION: - Load state 2: Prestressing forces ! DESCRIPTION: ! DESCRIPTION: - Load state 3: Self weight and Prestressing forces ! DESCRIPTION: ! DESCRIPTION: - Load state 4: Self weight + Modified Prestressing ! DESCRIPTION: ! DESCRIPTION: - Load state 5: Self weight + Modified Prestressing and tendon removed ! DESCRIPTION: ! DESCRIPTION: The combinations are: ! DESCRIPTION: ! DESCRIPTION: - Combination 11: Self weight + Prestressing actions ! DESCRIPTION: ! DESCRIPTION: - Combination 12: Self weight ! DESCRIPTION: ! DESCRIPTION: - Combination 13: Combination 11 + Combination 12 ! DESCRIPTION: ! DESCRIPTION: - Combination 14: Combination 12 + Load state 1 (2*self weight) ! DESCRIPTION: ! DESCRIPTION: Targets: ABS(Mz) ! DESCRIPTION: ! DESCRIPTION: The aim of the example is to obtain the combinations results. ! DESCRIPTION: ! DESCRIPTION: This example is based on "Prestressed concrete, ! DESCRIPTION: a fundamental approach", 4th edition, page 16. ! ! ELEMENT TYPE: BEAM44 ! MODULES: PRSC ! UNITS: SI ! KEYWORD1: Beam ! KEYWORD2: Tendon ! KEYWORD3: Cross Section ! KEYWORD4: Prestressed Concrete ! !*************************************************************************************! FINISH ~CFCLEAR,,1 NomFile='CFVR5205' /TITLE,%NomFile% ,Combinations with prestressed concrete results ! ------------------------------------------------------------------------------------- ! Initial data ! ------------------------------------------------------------------------------------- ! CivilFEM SETUP ~UNITS,SI ~CODESEL,,EC2-91,EC2-91 ~CFACTIV,PRSC,Y ! Preprocessor /PREP7 ! Material Definition ~CFMP,1,LIB,CONCRETE,EC2,C16/20 ~CFMP,2,LIB,REINF,CEB,S400 ~CFMP,3,LIB,PREST,ASTMA416,Gr250 ! Element Type Definition ET,1,Beam44 ! Cross-section definition ~CSECDMS,1,REC,1,1 ,0.5,0 ,0 ,0 ,0 ,0 ,0 ,1 ,2 ! Beam & Shell property ~BMSHPRO,1,BEAM,1,1,,,44,1,1,,Beam 1 ! Model Construction k,1 k,2,15 l,1,2 dk,1,ux,0,,,uy,uz,rotx dk,2,uy,0,,,uz h_elems = 4 medcut = h_elems+1 endcut = h_elems*2+1 lesize,all,,,h_elems*2 lmesh,all ! Support beam construction area = 0.001 c_diameter = 0.15 ~SBBMDEF ~PCEPDEF,1, 1, 0,0 ~PCEPDEF,2, medcut,-0.400,0 ~PCEPDEF,3, endcut, 0,0 ~PCPPDEF,1, 1, 0,0 ~PCPPDEF,3, endcut, 0,0 Papp = 862207 ~PCTNDEF,1,3,area,c_diameter,Papp ,Papp ,0 ~PCTNMDF,1,EADD,1. ~PCTNMDF,1,EADD,2. ~PCTNMDF,1,EADD,3. ~PCTNMDF,1,PADD,1. ~PCTNMDF,1,PADD,3. ~PCTNMDF,1,METHOD,1 ~PCTNMDF,1,EPAROUT,1,0 ~PCTNMDF,1,EPARIN,2,0 ~PCLOSS,10000000,0,0,0.8, /SOLU ACEL,,9.81 ~CFLSWRT ! LS 1: Self weight ACEL, ~PCPL ! Prestressing forces ~CFLSWRT ! LS 2: Prestressing ~PCDEL ! Prestressing forces delete ACEL,,9.81 ~PCPL ! Prestressing forces ~CFLSWRT ! LS 3: SW + Prestressing LSSOLVE,1,3,1 /POST1 ! Targets definition ~TRGDEF,1,CROSS,M,Z,ABS /TITLE,Combination rule 11,Self weight + prestressing actions ~CMBDEF ,11,ADD,2,0,2, ~STSTDEF,11,1,LSTEP,1,1,2,1,1,0, ~STSTCFT,11,0,1, /TITLE,Combination rule 12,Self weight ~CMBDEF ,12,ADD,1,0,1, ~STSTDEF,12,1,LSTEP,1,1, ~STSTCFT,12,0,1, /TITLE,Combination rule 13, Comb11+ Comb12 = 2*(Self weight) + prestressing actions (Nested combination) ~CMBDEF ,13,ADD,2,0,2, ~STSTDEF, 13 ,1 , CMB , 11 , ,2 ,1 ,1 ~STSTCFT ,13,0 ,1, /TITLE,Combination rule 14, Com12+Lsp1 2*(Self weight) (Nested combination) ~CMBDEF ,14,ADD,2,0,2, ~STSTDEF,14,1,CMB,12,, ~STSTDEF,14,2,LSTEP,1,1, ~STSTCFT,14,0,1, ~COMBINE !-------------------------------------------------------------------------------------- ! DATA CHECK !-------------------------------------------------------------------------------------- ! Data comparison number NComp = 9 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 ! Correct values ~CMBDAT,1 ~CFSET,,1,1 ~PLLSFOR,M,Z *GET,value1,ELEM,4,ETAB,CFETAB_J ~CFSET,,2,1 ~PLLSFOR,M,Z *GET,value2,ELEM,4,ETAB,CFETAB_J VALUE( 1,1) = value1 + value2 VALUE( 2,1) = 0.0 ! Not used VALUE( 3,1) = 0.0 ! Not used VALUE( 4,1) = value1 VALUE( 5,1) = value1*2 + value2 VALUE( 6,1) = 0.0 ! Not used VALUE( 7,1) = 0.0 ! Not used VALUE( 8,1) = 0.0 ! Not used VALUE( 9,1) = value1*2 ! --------------------------------------------------------------------------------- ! Control Tests ! --------------------------------------------------------------------------------- ! Test 1: ! - Hypothesis: Combination 11, Target 1 (MZabs CROSS) ! - Point : Element 4 Section J ! - Datum : MZ ! - Result : C1= H1+H2 ! ! Test 2: ! - Hypothesis: Combination 12, Target 1 (MZabs CROSS) ! - Point : Element 4 Section J ! - Datum : MZ ! - Result : C2= H1 ! ! Test 3: ! - Hypothesis: Combination 13, Target 1 (MZabs CROSS) ! - Point : Element 4 Section J ! - Datum : MZ ! - Result : C3 = 2*H1+H2 ! ! Test 4: ! - Hypothesis: Combination 14, Target 1 (MZabs CROSS) ! - Point : Element 4 Section J ! - Datum : MZ ! - Result : H4 = 2*H1 ! ! Load combined results ! --------------------------------------------------------------------------------- ~CMBDAT,2 ! Test 1: ~CFSET,,11,1 ! Comparison ~PLLSFOR,M,Z *GET,VALUE(1,2),ELEM,4,ETAB,CFETAB_J VALUE( 2,2) = 0.0 ! Not used VALUE( 3,2) = 0.0 ! Not used ! Test 2: ~CFSET,,12,1 ~PLLSFOR,M,Z *GET,VALUE(4,2),ELEM,4,ETAB,CFETAB_J ! Test 3: ~CFSET,,13,1 ~PLLSFOR,M,Z *GET,VALUE(5,2),ELEM,4,ETAB,CFETAB_J VALUE( 6,2) = 0.0 ! Not used VALUE( 7,2) = 0.0 ! Not used VALUE( 8,2) = 0.0 ! Not used ! Test 4: ~CFSET,,14,1 ~PLLSFOR,M,Z *GET,VALUE(9,2),ELEM,4,ETAB,CFETAB_J ! Labels LABEL( 1) ='TEST1' LABEL( 2) ='TEST2' LABEL( 3) ='TEST3' LABEL( 4) ='TEST4' LABEL( 5) ='TEST5' LABEL( 6) ='TEST6' LABEL( 7) ='TEST7' LABEL( 8) ='TEST8' LABEL( 9) ='TEST9' ! Warning and error tolerances TOLER( 1, 1)= 1E-5 $ TOLER( 1, 2)= 1E-4 TOLER( 2, 1)= 1E-5 $ TOLER( 2, 2)= 1E-4 TOLER( 3, 1)= 1E-5 $ TOLER( 3, 2)= 1E-4 TOLER( 4, 1)= 1E-5 $ TOLER( 4, 2)= 1E-4 TOLER( 5, 1)= 1E-5 $ TOLER( 5, 2)= 1E-4 TOLER( 6, 1)= 1. $ TOLER( 6, 2)= 1. TOLER( 7, 1)= 10. $ TOLER( 7, 2)= 10. TOLER( 8, 1)= 1E-5 $ TOLER( 8, 2)= 1E-4 TOLER( 9, 1)= 1E-5 $ TOLER( 9, 2)= 1E-4 !-------------------------------------------------------------------------------------- ! Results comparison !-------------------------------------------------------------------------------------- COMPARA.MAC