鋼筋與混凝土高溫粘結(jié)性能研究.pdf

1、中南大學(xué)碩士學(xué)位論文鋼筋與混凝土高溫粘結(jié)性能研究姓名：張鳳維申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：防災(zāi)減災(zāi)工程及防護(hù)工程指導(dǎo)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