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1、武漢理工大學(xué)博士學(xué)位論文火電廠有粘結(jié)預(yù)應(yīng)力混凝土框架抗震性能試驗研究姓名:夏訓(xùn)成申請學(xué)位級別:博士專業(yè):橋梁與隧道工程指導(dǎo)教師:盧哲安20090401武漢理1:人學(xué)博士學(xué)位淪文AbstractThedeaeratorsandcoal-bunkerbaysofmainpowerhousesofthermalpowerplantsareusuallyimposedonheavyverticalloadsandthetransversalspansareverylarge.Comparedwiththeconv
2、entionalstructuraldesign,namelythenormalreinforcedconcrete(bent)frames,theprestressedconcrete(PC)framesarescarcelyappliedinthermalpowerplantshomeandaboard.TherearestillmanycontroversiesonaseismaticperformanceofPCframesastheyareappliedinindustrialbuildings
3、withspecialtechnologicalrequirements.Therefore,itisneededforfurtherexploratoryresearchandimprovementsfortheaseismaticperformance.FocusingonthePCframe,thepseudo—statictestofplanarframeandtheshakingtabletestofspaceframearecompleted;simultaneously,thetestres
4、ultsandthenumericalsimulationarecomparedandanalyzed.Themainresearchworkincludes:1.Pseudostatictest.Basedontheexperimentonacommonmultilayersingle-spanprestressedconcreteplanarflame,followingstudiesarechieflyconductedinthischarpter:thefailurepatternofthefra
5、meunderhorizontalearthquakes;thehysteresiscurves,skeletoncurves,stiffnessdegradationCurvesandstraincurves;thedisplacementductilityfactor,girdercurvatureandangle;thesequenceofplastichingejointsandthefailuremechanism.2.Shakingtabletest.Astheresearchobject,t
6、hedynamicresponseofamultilayersingle—spanPCspaceframeisanalyzedwhichissubjectedtothreeearthquakes.Accordingtothephenomenonoftest,thestructuraldestructionfeaturesareanalyzed;theperiodandmodeofvibrationofprototypearededuced;theinfluencedegreeofthetorsionont
7、hestructure,thestiffnessdegradationamplitude,inertialforcedistributionoflayers,timehistoryofaccelerationanddisplacementarecalculatedanddiscussed.3.AspaceframeFEmodelisestablishedbythree—dimensionalentityelementsandthenonlinearfiniteelementdynamictime-hist
8、oryanalysisisconducted.Basedonthecomparisonofanalysisresultsandexperimentalresults,itismainlystudiedonthestructuralreactionundersmallandstrongearthquakes.Theresultsofplaneframemodelandspatialframemodelarecomparedwhi