屋頂鋼塔TMD和塔底隔震雙重減震性能研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文屋頂鋼塔TMD和塔底隔震雙重減震性能研究姓名：熊源申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：廖紹懷20070602華中科技大學(xué)碩士學(xué)位論文IIAbstractInrecentlyyearssomesteelstructuretowerswhicharebuiltontheroofofthehighbuildingshavebeenappearingalmosteverywhere.Howevertheearthq

2、uakedamagedatashowsthattheearthquakeaccelerationoftheprotrudingsteeltoweronthetopofthehighbuildingisalwaysstrengthenedgreatlythroughmainstructurewhenthestrongearthquakeoccurs.Thehizontalseismiceffecttothesteeltowerismeth

3、anthatifit’sjustontheflowhichwillmakethesteeltowerhaveobviouswhiplasheffect.Sohowtoavoidthewhiplasheffectofthesteeltoweratopbuildinghasbeengreatlyconcerned.Thispaperwillmainlyhaveresearchonvibrationisolationofthesteeltow

4、erwhenseismicisolationmeasureareusedatthebottomofthesteeltoweratopbuildingsteeltowerhavingdampingeffecttothemainstructure.ThepaperfirstintroducesthebasicprincipleoftheisolatedstructuretheTMDsystemestablishestheTMDmodeoft

5、wodegreeofthefreedomsteeltoweratopbuildingdynamicequations.CompiletwodegreeoffreedomtimehistyanalysisprogramthroughusingMATLABlanguageanalyzethecalculatedresultsundertheseismicwavesthroughchangingthehizontalstiffnessofth

6、eisolatedlayertheparameterssuchasdampingratioconcludetheearthquakerespondprincipleoftheTMDstructureofthesteeltoweratopbuilding.alsogivethesuggestiononconstructionofthebuildingftheshockisolationunitoftheTMDofthesteeltower

7、atopbuilding.ThenonefourflosteelframemodelisbuiltbyhugegeneralusefiniteelementsoftwareSAP2000.Underthedifferentearthquakewaveshavetimehistyanalysiscomparisonthethreemodels:themodelwithoutsteeltoweratopbuildingthemodelonl

8、ywiththesteeltoweratopbuildingwithaTMDsystemofthesteeltoweratopbuilding.Theanalysisresultsshow:undertheconditionwhenwithoutsteeltoweratopbuildingthemainstructurehavethemostobviousresponseundertheconditionwhensteeltowerat

9、opbuildingtheresponseisrelativelyweakthesteeltoweratopbuildinghasthemostgreatreactionunderthewhiplasheffectwhilewiththeTMDofthesteeltoweratopbuildingthereactionofthemainstructuresteeltowerdeclinetotheirlowestpoint.Theres