活性粉末混凝土桥墩的地震响应分析

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1、北京交通大学硕士学位论文活性粉末混凝土桥墩的地震响应分析姓名：许丽娜申请学位级别：硕士专业：防灾减灾工程及防护工程指导教师：阎贵平20071201ABSlRACTABSTRACTAsanewtypeofcompositematerial．RcaetivePowderConcreteisofmoleexcellentmechanicalprop,talcsandperformancethannormalconcreteandthehigh．s呦glhconcrete；thispaperwillmainlymaketheresearchands

2、tudyOntheseismicl僦ormanccinthec鹪ethatRPCisusedinhighwaypie瑙withthin-wallhollow．BasedOntheexistingdesignmethodofchinastandardofhighwayPCbridge,andwilhutilizationofgoodmechanicalpropertiesofRPC．insteadofnormalconcrete,RPC200．isusedinhighwaypierswimthin-wallhollow,andthendyna

3、micnumericalmodelsusingANSYSaleestablished，finallytheresponsespectrumanalysisanddynamictime-historyanalysisofthestructureal*ecarriedout．Atthesametime,10seismicwavesofthreedifferentsiteswereselected；thecharaeteristicsandlaWlSofRPCpierseismicresponsewithtime-historyanalysiso

4、fearthquakeresponse黜summarizedinthispaper．Comparisonandanalysiswithnormalconcreteal'ealsocarriedout；theresultscanbereferencetoforengineeringRPCapplication．Theresultshowth虬consideringtheroleoffoundationspring,thefoundationspringwillbeinvolvedintheupperstructure,whichreducet

5、helevelofstiffiaess，thenaturalfrequencyofstructurealereduced．PierAandBc锄meettheintensityandrigidityoftherequirementsundertheconditionoffrequentearthquake，andthestructurelrelllainstheelasticstate．nemaximumofnon-lineardisplacementduetili哆ratiomeallalongthepierdirectionappeal

6、satthebottomofthepierinthelongitudinaldirectionofthebridgeunderseismicaction．TheCUl'Veofnon-lineardisplacementductilityratiome811isaW-shapeCUI'VCinthe吣el-Sedirection,themaximummealtlofnon-lineardisplacementductilityratioalongthepierdirectionappearsatthebottomOrtopsectionof

7、thepierintl"／msyersedirection，andthesecondplastichingeprobablyappearintherangeof25～27meterssection．ThecomparisonbetweenRPCpierandnormalconcretepierfullyprovethattheRPCmaterialhavegoodseismicpa'forma．cc．KEYWORIOS：Reactivepowderconcrete；Pier；Seismicresponse；Responsespectrum；

8、Time-historyanalysisCLASSNo：学位论文版权使用授权书本学位论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授权北京交通大学可以将学位论文的全