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基于线性静力法对框架结构抗连续倒塌的研究 Abstract Inrecentyears,catastrophicearthquakeshavebroughtsignificantdamagetooursociety,andthecollapseofbuildingsduringearthquakeshasbecomeoneofthemaincausesofdeathandpropertydamage.Therefore,itisnecessarytostudytheanti-collapseabilityofbuildingsunderseismicloads.Thisstudyfocusesontheanti-collapseabilityofframestructuresbasedonlinearstaticanalysismethod.Inthispaper,weintroducetheconceptofcontinuouscollapse,analyzethefactorsthataffectthecontinuouscollapseofframestructures,andproposemeasurestoimprovetheanti-collapseabilityofframestructures. Introduction Withthedevelopmentofmodernsociety,thenumberofbuildingshasincreasedsignificantly.However,theincreasingnumberofbuildingsalsomeansthattheriskofearthquakescausingcasualtiesandpropertydamageisincreasing.Thecollapseofbuildingsduringearthquakeshasbecomeamajorthreattohumanlifeandproperty.Therefore,itisnecessarytostudytheanti-collapseabilityofbuildingsunderseismicloads. Continuouscollapseisaphenomenoninwhichthecollapseofapartofabuildingduetodamageorotherreasonsleadstothecollapseofotherpartsofthebuilding,eventuallyresultinginthecollapseoftheentirebuilding.Theanti-collapseabilityofabuildingistheabilitytopreventtheoccurrenceofcontinuouscollapseinanearthquake.Framestructures,asoneofthemostcommonbuildingstructures,arewidelyusedinvariousfields.Therefore,itisimportanttostudytheanti-collapseabilityofframestructuresunderseismicloads. Inthispaper,wewillanalyzethefactorsthataffecttheanti-collapseabilityofframestructures,proposemeasurestoimprovetheanti-collapseabilityofframestructures,andprovideatheoreticalbasisfortheanti-seismicdesignofframestructures. Factorsaffectingtheanti-collapseabilityofframestructures Theanti-collapseabilityofaframestructureisaffectedbymanyfactors.Themainfactorsareasfollows: 1.Structuralform Thestructuralformofaframestructurehasasignificantimpactonitsanti-collapseability.Forexample,theanti-collapseabilityofamoment-resistingframestructureisbetterthanthatofanordinaryframestructurebecausetheformerh