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1、Evaluation,Calibration,andVeri?cationofaReinforcedConcreteBeam–ColumnJointModel12NilanjanMitraandLauraN.LowesAbstract:Amodelforuseinsimulatingtheresponseofreinforcedconcreteinteriorbeamcolumnjointsisdevelopedandevaluatedusinganextensiveexperimentaldat
2、aset.ThismodelbuildsonpreviousworkbyLowesandAltoontashin2003,modifyingthepreviouslyproposedmodeltoimprovepredictionofresponseandextendtherangeofapplicability.First,anewelementformulationisproposedtoimprovesimulationofjointresponsemechanisms.Second,ane
3、wmethodforsimulatingtheshearstress-strainresponseofthejointcoreisdeveloped.Thismethodassumesjointshearistransferredthroughacon?nedconcretestrutandsimulatesstrengthlossduetoloadhistoryandjointdamagefollowingyieldingofbeamlongitudinalsteel.Third,modi?ca
4、tionsaremadetoenablebettersimulationofanchoragezoneresponse.Comparisonofsimulatedandobservedresponsehistoriesindicatesthatthenewmodelrepresentswellstiffnessandstrengthresponseparametersforjointswithawiderangeofdesignparameters.DOI:10.1061/ASCE0733-9
5、4452007133:1105CEDatabasesubjectheadings:Structuralanalysis;Nonlinearanalysis;Two-dimensionalanalysis;Concrete,reinforced;Earthquakeengineering;Finiteelements;Constitutivemodels;Joints;Beamcolumns.Introduction2003.Theexperimentaldataset,thenewmo
6、del,andacompari-sonofobservedandsimulatedresponseforjointsubassemblagesDatafromexperimentaltestingindicatethatreinforcedconcretearepresented.buildingbeamcolumnjointswithdetailingtypicalofmodernconstructionexhibitstiffnessandstrengthlossundersimulatede
7、arthquakeloadingandthatstiffnessandstrengthlossmaybeExperimentalDataSetsevereforjointswithdetailingtypicalofolderconstructionAnexperimentaldatasetincluding57buildingsubassemblageNoguchiandKashawazaki1992;OkaandShiohara1992;Parktestsfrom12investigatio
8、nsconductedaroundtheworldduringandRuitong1988;Otanietal.1984;DurraniandWight1982.thelast40yearswasassembledTable1.ThedatasetincludesAdditionally,evaluationofbuildingdamageresultingfromrecenttwo-dimensionalinteriorbuildingjointsub-assemblage
