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等效刚度比对梁式转换层结构抗震性能影响研究 Title:InfluenceofEquivalentStiffnessRatioontheSeismicPerformanceofBeam-ColumnTransferStructures Abstract: Beam-columntransferstructuresarecommonlyusedinhigh-risebuildingstoaccommodatechangesinfloorprofilesandtoprovideintermediatesupportforverticalloads.Theseismicperformanceofsuchstructuresisofparamountimportanceduetothepotentialforlargelateraldisplacementsduringearthquakes.Thispaperaimstoinvestigatetheinfluenceoftheequivalentstiffnessratioontheseismicperformanceofbeam-columntransferstructures. Introduction: Beam-columntransferstructurestransfertheloadsfromtheupperfloorstotheverticalelementsbelow.Thesestructurestypicallyconsistofasetofcolumnsthataresupportedbyasetofbeamsatadifferentfloorlevel.Duringanearthquake,thelateralloadsexperiencedbythesestructurescanresultinsignificantdeformationanddamage.Theequivalentstiffnessratio,whichcharacterizestherelativestiffnessofthebeamsandcolumns,playsacrucialroleindeterminingtheseismicperformanceofthesestructures. Methodology: Toassesstheinfluenceoftheequivalentstiffnessratioontheseismicperformanceofbeam-columntransferstructures,anumericalstudywasconducted.Athree-dimensionalfiniteelementmodelwasdevelopedusingacommercialsoftwarepackage.Themodelconsistedofthecolumns,beams,andintermediateslabelements.Variousequivalentstiffnessratioswereconsidered,coveringarangeofscenariosfrommoreflexibletomorerigidstructures. Results: Theresultsofthenumericalanalysisindicatedthattheseismicperformanceofthebeam-columntransferstructureswashighlydependentontheequivalentstiffnessratio.Ingeneral,asthestiffnessratioincreased,thelateraldisplacementsandthemaximuminter-storydriftdecreased.Thissuggeststhatmorerigidstructurestendtoexhibitbetterseismicperformance. Furthermore,itwasobservedthatanoptimalrangeofequivalentstiffnessratioexistsforbeam-columntransferstructures.Inthisrange,thestructureachievesabalancebetweenthestiffnessofthebeamsandthecolumns,thusminimizingthepotentialforexcessivedeformationduringseismicevents.Deviationfromthisoptima