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ID:37069321
大小:21.56 MB
页数:124页
时间:2019-05-16
《一种新型三维隔震支座的力学性能研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、11078UDC2111516167StudyonMechanicalPropertiesofaNovelThree-dimensionalIsolationBearing201852712abaqusKvF-DispDD0dhtfyD/dD/th0/tQ3453LNRLNRLNR4etabsIIABSTRACTEarthquakeisakindofmulti-dimensionalrandomvibration.Itnotonlyhasthreeorthogonaltranslationalcomponentsinh
2、orizontalandverticaldirections,butalsohastorsionalandswayingrotationalcomponents.Therefore,themulti-dimensionalnatureofgroundmotionshouldbetakenintoconsiderationinstructuraldesign,anddifferentstructuresaredifferent.Seismicdesignofdifferentseismiccomponentswithdi
3、fferentstructures.However,onlythehorizontalbaseisolationtechnologyiswidelyusedintheactualengineeringtechnologyatpresent,andtheseismicisolationtechnologyforverticalandrotationalcomponentsisnotyetmature.Aimingattheproblemsinthefieldofverticalseismicisolation,thisp
4、aperpresentsanewtypeofthree-dimensionalseismicisolationbearing,whichhasbothhorizontalandverticalseismicisolationperformanceandcaneffectivelysolvetheverticalisolationproblem.Themainresearchcontentsandachievementsofthepaperareasfollows:1.Thispaperanalyzesthecharac
5、teristicsofthetraditionaldiscspringsandimprovestheshortcomingsofthetraditionaldiscsprings.Itproposesaverticalisolationbearingcomposedofimproveddiscsprings.Thehorizontalrubberisolationsupportandtheverticalisolationdevicearecombinedinseriesthroughthesupportconvers
6、ionplatformtoformathree-dimensionalseismicisolationdevicewiththree-wayappropriatestiffnessanddampingperformance.Thethree-dimensionalseismicisolationdevicecannotonlyreducetheinfluenceofthehorizontaldirectiongroundmotiononthebuildingstructure,butalsoreducetheinflu
7、enceofverticalgroundmotiononthebuildingstructure,andiseasytoinstallandsimpleinconstruction.2.Inthispaper,theperformanceofthediscspringmodelunderverticalloadisstudiedbyABAQUSandobtainscurvesofKvandF-Disp.TheeffectsofDD0dhtfyandmaterialsonstiffnessandlimitperforma
8、nceofdiscspringsaresystematicallystudied.Thefollowingconclusionsareobtainedthroughanalysis:TheverticalstiffnessofthediscspringsdecreaseswithincreasingD/d,D/t,andh0/tr
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