Evaluation， Calibration， and Verification of a Reinforced Concrete BeamColumn Joint Model.pdf

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1、Evaluation,Calibration,andVerificationofaReinforcedConcreteBeam–ColumnJointModel12NilanjanMitraandLauraN.LowesAbstract:Amodelforuseinsimulatingtheresponseofreinforcedconcreteinteriorbeamcolumnjointsisdevelopedandevaluatedusinganextensiveexperimentaldat

2、aset.ThismodelbuildsonpreviousworkbyLowesandAltoontashin2003,modifyingthepreviouslyproposedmodeltoimprovepredictionofresponseandextendtherangeofapplicability.First,anewelementformulationisproposedtoimprovesimulationofjointresponsemechanisms.Second,ane

3、wmethodforsimulatingtheshearstress-strainresponseofthejointcoreisdeveloped.Thismethodassumesjointshearistransferredthroughaconfinedconcretestrutandsimulatesstrengthlossduetoloadhistoryandjointdamagefollowingyieldingofbeamlongitudinalsteel.Third,modifica

4、tionsaremadetoenablebettersimulationofanchoragezoneresponse.Comparisonofsimulatedandobservedresponsehistoriesindicatesthatthenewmodelrepresentswellstiffnessandstrengthresponseparametersforjointswithawiderangeofdesignparameters.DOI:10.1061/
ASCE0733-9

5、445
2007133:1
105CEDatabasesubjectheadings:Structuralanalysis;Nonlinearanalysis;Two-dimensionalanalysis;Concrete,reinforced;Earthquakeengineering;Finiteelements;Constitutivemodels;Joints;Beamcolumns.Introduction
2003.Theexperimentaldataset,thenewmo

6、del,andacompari-sonofobservedandsimulatedresponseforjointsubassemblagesDatafromexperimentaltestingindicatethatreinforcedconcretearepresented.buildingbeamcolumnjointswithdetailingtypicalofmodernconstructionexhibitstiffnessandstrengthlossundersimulatede

7、arthquakeloadingandthatstiffnessandstrengthlossmaybeExperimentalDataSetsevereforjointswithdetailingtypicalofolderconstructionAnexperimentaldatasetincluding57buildingsubassemblage
NoguchiandKashawazaki1992;OkaandShiohara1992;Parktestsfrom12investigatio

8、nsconductedaroundtheworldduringandRuitong1988;Otanietal.1984;DurraniandWight1982.thelast40yearswasassembled
Table1.ThedatasetincludesAdditionally,evaluationofbuildingdamageresultingfromrecenttwo-dimensionalinteriorbuildingjointsub-assemblage