新型隔震耗能支座的研究與應(yīng)用.pdf

1、東南大學(xué)碩士學(xué)位論文新型隔震耗能支座的研究與應(yīng)用姓名：米金星申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：舒贛平20071001東南大學(xué)碩士學(xué)位論文THERESEARCHANDAPPLICAn0NofNEWISOLAn0NANDENERGYDISSI咖ONBEARINGGraduate：MIJinxingSupervisor：ProfShuGanpingAbstractInthestructurecontr01thebaseisolatio

2、nisanewtechnologywhichc∞r(nóng)educeearthquakedisasterAgoodperformanceandreasonableisolationandenergydissipationbearingcaneffectivelyreduceseismicresponseofupperatrueture，improvethesecufityofthestructureandmeetthestructureseis

3、miceffectsthatatraditionalseismicstructuregallnotrealizedHowevertheexistedisolationandenergydissipationbearingsstillhavemoreorlessdefectsandaledifficulttoachievesatisfactoryresultsAsthedevelopingandapplyingoftheisolation

4、andenergydissipationtechnologyinourcountrydevelopinganewisolationandenergydissipationbearingwhichsuitsChinasnationalconditionsandhasbetterperformance，hassomepracticalsignificanceMildsteelisanewtypeofsteeldevelopedinrecan

5、tyearswhoseyieldstrengthisloweranddeformationcapabilityisstrongertheexpeasandscholarsofallcountrieshavedevelopedandresearchedavarietyofmildsteelenergydissipationdevicesusingthespecialpropertiesofmildsteelThesedevicesarea

6、llusedinenergydissipationandseismicreductionofupperstructure；howevertheyhavenotbeenusedinisolationandenergydissipationbearingatpresentBasedontheideaofisolationandenergydissipationstructureandtheprincipleofmildsteelenergy

7、dissipationdevices；thepaperpresentsanewisolationandenergydissipationbearingmildsteelisolationandenergydissipationbearingwhichusesmildsteelplatelselastic—plasticdeformationenergydissipationafteryieldofshearthentheFiniteEl

8、ementanalysisandexploratorytestresearchingarecarriedonCombinedwiththeexistedmildsteelenergydissipationdevices，thepaperpresentsatectonicwayofmildsteelisolationandenergydissipationbearingwhichcomposedofupperplate，flangepla

9、tes，webplateandlowerplateThenbysimplifyingbearingflangeplateandwebplate’scomputingmodel，thecalculationformulasofflakinessratiothatguaranteesbearingflangeplatesandwebplate’slocalstabilityateobtainedThepapersimulatesthelow

10、cyclicloadingtestprocessofmildsteelisolationandenergydissipationbearingusingFiniteElementprogramAnsys，theresultsshowthatmildsteelisolationandenergydissipationbearinghasbetterhystereticenergydissipationperformanceandstabi

11、lityThemajorfactorsthatimpactenergydissipationperformanceofmildsteelisolationandenergydissipationbearingarethebearingwebplateflakinessratio，axialcompressionratioanddepthwidthratioAndthewebplateflakinessratioisthemostmajo

12、rfactor；thesmallerwebplateflakinessratiocaneffectivelyinhibitanddelaythewebplate’sbucklingexploittheenergydissipationadvantagessufficiencyofmildsteelisolationandenergydissipationbeatingBilineatstifinessmodelcanbetterrefl

13、ectthestifinesschangesofmildsteelisolationandenergydissipationbearin＆thepaperobtainsthestiffnessreducedcoefficientsandtheequivalentdampingratioatthemaximumcarryingcapacityofmildsteelisolationandenergydissipationbearingby

14、FiniteElementanalysisBasedonthemildsteelmaterialtestthePaDerprovesthatmildsteelhasbetterelastic—plasticdeformationcapabilitygreatelongationratioandslowstressgrowthMildsteelalsohasexcellentweldingperformanceandcanmergewel