鋼筋與混凝土高溫粘結性能研究.pdf

1、中南大學碩士學位論文鋼筋與混凝土高溫粘結性能研究姓名：張鳳維申請學位級別：碩士專業(yè)：防災減災工程及防護工程指導教師：李耀莊20080501ABSTRACTAnunderstandingofbondingperformancebetweensteelbarandconcreteistheprerequisiteforresearchofconcrete’Sultimatebearingcapacityunderhightemperatur

2、e，residualbearingcapacityafterhightemperatureandthestructuralmember’SrepairandstrentheningBasedonHunanprovincescienceandtechnologykeyitem，theentireprocessanalysisandsimulationresearchaboutreinforcedconcreteframestructure

3、underfire(06FJ2002)“，thepapermainlystudiesdamagemechanismandinfluencingfactorsonthebondingperformancebetweensteelbarandconcreteunderandafterhightemperatureThemaincontentsareasfollows：(1)Basedonthegreycorrelationmathemati

4、csmodelofthegreysystemtheorytheprevioustestdataofbond—slipisanalyzedquantitativelyandthenthemaininfluencingfactorsonbondingperformanceareresearchedTheresultsindicatethatthesubsequentkeyinfluencingfactorsareconcretestreng

5、thgrade，diametersizeofsteelbarprotectivecoatingthicknessoftheconcreteandanchoragelengthBecausethehightemperatureaffectstheconcretestrengthsignificantlyitalsoaffectsbondingperformancebetweensteelbarandconcreteunderandafte

6、rhightemperatureAllthesefactorsprovideabasisforkeyinfluencingfactorsofbondsliptestunderandafterhightemperature(2)Damagemechanismisemployedtoanalyzedeteriorationsituationofthebond—slipperformancebetweensteelbarandconcrete

7、underandafterhightemperature，thendamagemodelofthereinforcedconcrete’SinterfaceisestablishedBasedonthepreviousanalysis，damageevolutionequationsanddamageconstitutiveequationsarededucedInterfacedamagemechanicsanddamageevolu

8、tionmechanismareanalyzedandinterfacedamagedevelopmentiscomparedunderandafterdifferenttemperature(3)Thefiniteelementsoftware(ANSYS)isappliedtoanalyzeandsimulatethepulltestmodelThesimulationdataiscomparedwithtestdataandval