控制结构竖向地震反应的分析-防灾减灾工程及防护工程专业毕业论文.docx

————————————————————————————————————————————一塑!!,,themostpracticalcontrolsystemsmaybeclassifiedintothreeapproaches,namely,,energy·absorbingdampersandactivecontrol,andthebase’,allofthesecontrolsystemsonlyweakenorisolatethehorizontalearthquakeresponses,astotheverticalearthquakeresponses,,ponents,andinsomecasestheverticalonescan’,onthebasis ofhorizontalbase-isolationandTMD(TunedMassDamper),thispaperinvolves theverticalearthquakeresponsesofthreesystems:theverticalTMDsystems,theverticalbase—binationofverticalbase—isolationandTMDsystems,onclusionsdrawnaleasfollows:(1)ForverticalTMDsystem,massratio,frequencyratioanddampratioarethreeimportant ,TMDdesignattachedtothemainstructurecandecreasetheverticalresponse;thefundamentalperiodofthemainstructuresshouldbeapartfromtheverticalseismicpredominantperiod,otherwise,itmaybeincreasethemainstructures’response;whentheverticalTMDsystemisdesignedreasonably,Wecangetbetterresuas.(2)Forverticalbase-isolationsystem,itiseffectivewhentheverticalstiffnessofthebaseisolaterissmaller,theperiodofthebase-isolationsystemislonger,andapartfromtheverticalearthquake’,thebase·isolated一Ⅱ.河北理工学院硕士论文layer should be designed reasonably and theperiod ofthe base—isolated systemshouldbeapartfromtheverticalseismicpredominantperiod.(3)binationofverticalbase—isolationandTMDsystem,elerationresponseofthemainstructureandthedisplacementresponseofthebase—isolatorCanbereducedwhenitiswelldesignedKeyWords:horizontalbase。isolation,horizontalTMD(TunedMassDampe0,verticalTMD,verticalbase—isolation-nJ—独创性说明本人郑重声明:所呈交的论文是我个人在导师指导下