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1、重慶大學碩士學位論文側向剛度、耗能能力增強效果不顯著。④調(diào)整梁、柱抗彎線剛度比和柱、梁抗彎強度比對強震作用下框架結構的破壞模式均有控制作用：對于線剛度比大于1的框架結構，剛度比越小，梁柱損傷比越大，結構、局部樓層的損傷明顯減輕，梁鉸數(shù)量增多，柱鉸數(shù)目減少且變形較小，破壞模式更合理；剛度比小于1的框架結構，雖然梁柱損傷比較大，但是頂層的柱鉸數(shù)目較多、損傷程度較高，有形成層側移機構的風險；提高強度比，減少了柱鉸數(shù)目，明顯減輕了柱鉸變形，改善了結構整體和局部樓層的損傷程度，降低了梁柱損傷比，對框架結構破壞模式起到較好的控制作用。⑤根據(jù)有限算例的結果，
2、建議：框架結構設計時，應至少計入單側8倍板厚寬度樓板的剛度及強度貢獻，應將柱、梁實際抗彎強度比控制在1.1以上，宜將梁、柱線剛度比控制1~4的合理范圍內(nèi)；當梁、柱線剛度比小于1或大于4時，需將柱、梁實際抗彎強度比提高到1.3以上，才能保證強震作用下框架結構能夠?qū)崿F(xiàn)較為合理的“梁柱混合鉸”破壞模式。關鍵詞：框架結構，梁柱剛度比，強柱弱梁，損傷模型，破壞模式II英文摘要ABSTRACTTraditionally,throughtheadjustmentof"strongcolumnweakbeam"coefficient,RCframestruct
3、ureswereensuredtoformthereasonablefailuremodeinthequake,butignoredeffectsofreasonablematchingrelationshipbetweentheflexuralstiffnessandstrengthofbeamandcolumnonstructuralseismicperformanceandfailuremode.FocusingonRCframestructures,mainworkofthispaperisbrieflyasfollows:①Accor
4、dingtothecharacteristicsofplastichingeandthetraditionalevaluationsonfailuremode,thispaperidentifiedthequantitativedamageindicatorsfrommemberstostructures,putforwardthemethodforevaluatingfailuremodesofframestructureoverall,basedontherevisedPark-Angdoubledamageparameters’model
5、andthereasonableweightedcombinedmethod.②Thedifferencesofseismicperformanceandfailuremodesbetweentheacturalstructurewhichhasslabsandthedesignedstructurewithoutslabs,arecomparedthroughaccuratenonlinearanalysis.Itisobtainedtheequivalentmodelofeffectiveflangewidthvaluesoftheslab
6、sinthispaper,andtheeffectivenessoftheequivalentnumericalmodelisverified.③Toinvestigatetheinfluencesonseismicperformanceandfailuremodesfromtheflexuralstiffnessratioofbeamandcolumnortheflexuralstrengthratioofcolumnandbeam,anddeterminingthereasonablematchingrelationshipbetweent
7、heflexuralstiffnessandstrengthofbeamandcolumn,itisdesigned18equivalentnumericalplaneexamples(6kindsofflexuralstiffnessratio,3kindsofflexuralstrengthratio).Themainconclusionsareasfollows:①Thelateralstrengthandstiffnessofframestructurewithslabishigherthanstructurewithoutslab.B
8、utwiththeincreaseoflateraldisplacement,thenumberofcolumnhingesisincreased,t
