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1、東南大學碩士學位論文考慮P△效應(yīng)的單自由度體系的抗震能力分析姓名：李益申請學位級別：碩士專業(yè)：土木工程；結(jié)構(gòu)工程指導教師：吳京20120601AbstractResearchonSeismicCapabilityofSingleDegreeofFreedomSystemConsideringthePAEffectAbstractInseismichazardsthePAeffectistheleadingfactorforbuildin

2、gcollapses，whichthenresultinseveleeconomiclossesandheavycasualtiesThereforeproceedingresearchesofseismiccapacitywiththeconsiderationofthePAeffectiSimportantAtypicalmethodtoconsidertheresponsewiththePAeffectistheIncrement

3、alDynamicAnalysis(mA)，ofwhichistoaltertheseismicintansityindicatorsmonotonicallyandconductmultipledynamictimehistoryanalysistogettheresponseclEveHowevereVentheIDAmethodprovidesaccurateresponsesofsmamaeswhencalculatings岫K

4、：tl麟withconsiderablenonlinearfeaturesthesolutionoftheIDAmethodisdi佑culttobeconvergentandthismethodishardtobemasteredbyengineersForstructuresrespondingmainlyintheformofthefirstmode，applyinganequivalentsingledegreeoffreedo

5、m(SDOF3systemtOcalculatetheresponseoftheoriginalstructureisatypicalmethodInthisthesisthismethodwasextendedtoprovidethesolutionoftheresponseswiththeconsidet倘onofthePAef‰tandtheanalysisprocessisestablishedandthecorrespondi

6、ngcalculationprogramisdevelopedaswellFirstofallthecharacteristicsofthedynamicresponsesofasixstorysteelframemodelandasixstoryreinforcedconcreteframemodeJwiththeconsiderationoftheinfluencesbroughtbythePAeffectisdiseussedDu

7、ringtheprocessesoftbepushoveranalysisandthedynamictimehistoryanalysis，itcanbereVealedthatwhenthesUucturewasconsideredwiththePAeffectthebackbonecurvepossessesadescendingsegmentandthenegativestiffnessisobviouswiththedisper

8、sionofthedisplacementForabackbonecurvelikethis，thesimplificationofailinearbrokenlinemethodprovidesabetterdegreeofsuitabilityThecomparisonofbilinearandtrilinearbrokenlinesimplificationsisalsoperformedinthisthesisAdditiona

9、llyforSDOFsystems，basedonvarioushys滟greticmodels(includingtheElasticplasticModelNonlinearElasticModelPeakOrientedModelCloughStiffnessDegradingModelModifiedCloughStiffnessDegradmgModel)，theprogramofdyna／nicanalysisisdevel

10、opedByanalyzingthehystereticrulesofthesemodels，threetypesoforientationpointsandauxiliarylinesaredesignedtOdefinetheirhystereticpathsThecorrespondingprogramiscreatedwithMatlabplatformanditwasdevelopedtoaprogramofDynamicRe

11、sponseAnalysisforSDOF(DRAS)1t℃programdevelopedinthisthesisisverifiedwithANSYS，Sap2000andBispec。AndtheresultsrevealthatDRASprovidesaccuratecalculationswinlmultiplerestoringforcemodels，thusitpossessesagoodapplicationvalueI

12、ntheendthecomparisonofthesimplificationmethodofcalculatingresponsefunctionsandthe脫methodisperformedwithtwonumericalexamplesAndtheresultsrevealthat：equalingtheoriginalslructuretOaSDOFsystemwithatrilinearbrokenlinebackbone

13、clHveandtheappropriatehystereticmodelappliedtheresponsesofthewholeprocessfromelasticitytoplasticityuntiltocollapsecanbeacctwatelyacquired眥methodisconveniemandcompatiblewithengineeringapplicationsKeywords：PAEffectsinglede

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