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ID:36511713
大小:1.61 MB
页数:76页
时间:2019-05-11
《拱式转换层结构弹塑性抗震性能研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、华东交通大学硕士学位论文拱式转换层结构弹塑性抗震性能研究姓名:王庆华申请学位级别:硕士专业:结构工程指导教师:张敏20080710AbstractRESEARCHONELASTIC-PLASTICSEISMICPERFORMANCEOFARCHTRANSFERFLOORABSTRACTThearchtransferfloorisanewtypeoftransferstorystructure,whichhasmajoradvantagesuchasstrongstiffness,lightweight,largespan,andcansupplymoreusefulspacef
2、orowner.Researchingonelastic-plasticseismicperformanceofarchtransferflooristheemphasisofthispaper,sopseudo-staticanalysis,dynamicelastic-plastictimehistoryanalysisandstaticelastic-plasticanalysis(Pushover)areadoptedtoresearchthiskindofstructureoverall.Themoment-curvaturerelationofmembersecti
3、onisthefoundationofstructurenonlinearanalysis,andthereforethispaperintroducesthecomputationofthemoment-curvaturecurveandanalysestheductilityofpressionandbendingmember.Theload-displacementhystereticcurveisacquiredbypseudo-staticanalysisprogramestablishedwiththeMATLABlanguage,andiscomparedwith
4、theexperiment.Thesingle-componentmodelbasedonmoment-rotationrelationisadoptedinthepseudo-staticanalysisprogram.Thetri-linearrestoringforcemodelwithconsiderationofrigiditydegradationisadoptedinthemoment-ratationrelation.Thecalculationmethodoftheprogramisconvenientandreliable,andcanbeappliedto
5、analysetheelastic-plasticperformanceofthestructure.Inthispaper,thebasicprincipleoftheelastic-plasticdynamicandstaticanalysisisintroducedindetail,andtheanalysisofarchtransferfloorisconductedbyEPDAandPUSHmoduleofPKPMserialsoftwaredevelopedinChinaAcademyofBuildingResearch.Undersevereearthquaket
6、heelastic-plasticrespondsofarchtransferstructureindicatethatthetransferflooritselfisnoteasytoproducestorydriftbecauseofitsexcellentintegrity.Theratioofequivalentlateralstiffnessγehasmuchinfluenceonstorydrift,storydriftangle,storyshearforce,andthelocationofweakstory.Thebottomcolumnendsandthec
7、olumnbottomendintheadjacentstoryabovethetransferfloorarethestructureweakpointsandareeasytoyieldandproducetheplastichinge,whichmustbestrengthened.KeyWords:archtransferfloor,singlecomponentmodel,thetri-linearrestoringforcemodelwithconsiderationofrigi
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