阻尼對隔震系統(tǒng)影響的研究.pdf

1、山東大學碩士學位論文阻尼對隔震系統(tǒng)影響的研究姓名：念曉飛申請學位級別：碩士專業(yè)：結構工程指導教師：陳青來20090520山東大學碩士學位論文ABSTRACTTherecentringsphericalsurfacedslidingisolationsystemisakindofarcsurfaceslidingfrictionsystemBesidesthecharacteristicsofthegeneralslidingfricti

2、onsystem，ithasgreatcapacityofdisplacementrestriction，restorationandstrongstabilityToensurethestructuralsafetythesystemCanisolateastructurefromtheground，prolongthestructuralperiod，changethedynamiccharacteristicsofstructur

3、es，absorbandconsumeseismicenergybydevelopingisolationlayerTherecentringsphericalsurfacedslidingisolationsystemisanewisolationsystemindependentlydesignedbyProfChenQinglaiofShandongUniversityThesystemconsistsofrecentringsp

4、hericalsurfacedslidingisolationbearingsandmildmetaldampersThepaperintroducesthelargescaleshaketableexperimenttakenonthisisolationsystemandanalyzesthedataofEL—eentro(ELC)earthquakewaveconcerningtheeffectofthebearingsaddit

5、ionaldampingonisolatingaffectionFirsttheexperimentaldataisanalyzedfromthepointofaccelerationsThepaperrespectivelycomparesaccelerationtimehistories，themaximumaccelerationsandthemaximumaverageaccelerationofsteelframeintwod

6、irectionsfromfirststorytosixthwithdifferentseismicintensityandlevelsofdampingTheeffectofisolationsystemisasfollows：thethirdlevelofdamping(inherentdampingofthebearingsand12％additionaldamping)issuperiortothesecondlevel(inh

7、erentdampingofthebeatingsandO％additionaldamping)whichisbetterthanthefirstlevel(inherentdampingofthebearingsand88％additionaldamping)Second，theexperimentaldataisresearchedfromthepointofenergyThepaperrespectivelycomparesene

8、rgytimehistories，thetotalenergyandthepredominantenergyofsteelframeintwodirectionsfromfirststorytosixthwitlldifferentlevelsofdampingunderthe4009alseismicintensityTheeffectisasfollows：theenergyratiooftheXdirectionis2：l：O75