高位层间隔震结构电梯井核心筒剪力墙处理方法研究

《高位层间隔震结构电梯井核心筒剪力墙处理方法研究》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、振动与冲击第30卷第10期JOURNALOFVIBRATIONANDSHOCKVol．30No．102011高位层间隔震结构电梯井核心筒剪力墙处理方法研究1121吴从晓，周云，吴从永，邓雪松(1．广州大学土木工程学院，广州510006;2．广州大学建筑设计研究院，广州510405)摘要:为了解决高位层间隔震结构中电梯井核心筒剪力墙在隔震层位置需断开的问题，提出一种高位层间隔震结构电梯井核心筒剪力墙处理方法(PMIT)，介绍了其原理、构造、特点。采用ETABS软件对电梯井核心筒

2、结构与外围结构之间布置粘滞阻尼器、弹簧、无阻尼器和弹簧的PMIT结构、悬挂法结构和框支剪力墙结构进行了分析，分析结果表明:①PMIT结构隔震层下部结构层间位移角和隔震位置电梯井剪力墙弯矩相比于框支剪力墙结构都有减小，而悬挂法隔震层下部层间位移相比于框支剪力墙结构放大了约150%，PMIT对隔震层下部结构刚度不会产生影响，避免隔震层下部结构出现薄弱层;②相比于悬挂法结构，布置粘滞阻尼器PMIT结构隔震层最外侧隔震支座拉力减小了约50%(仅水平地震作用)，提高结构的抗倾覆性能。关键词:隔震;电梯井;弹簧;粘滞阻尼器中图分类号:TU352．1文献标识码:AProcessingme

3、thodforacoreshearwallwithhigh-levelstoryisolationtechnology1121WUCong-xiao，ZHOUYun，WUCong-yong，DENGXue-song(1．SchoolofCivilEngineeringofGuangZhouUniversity，Guangzhou510006，China;2．ArchitectureDesignInstituteofGuangzhouUniversity，GuangZhou510405，China)Abstract:Aprocessingmethodforacoreshear

4、wallwithhigh-levelstoryisolationtechnology(PMIT)wasproposed，itsprinciple，configuration，andcharacteristicswereillustrated．Theproblemthatthecoreshearwallneededtobebrokenintheisolationstorycouldbeovercomeusingthenewmethod．WiththeuseofETABSsoftware，thePMITmodelsofplacingviscousdampersandelasti

5、csprings，ornodamperandelasticspringinthepre-fixedgapbetweenthecoreshearwallandthearoundupperstructure，themodelofthesuspensemethodandtheframe-supportshearwallstructuremodelwerebuilt，nonlineartimehistoryanalysesunderfrequentearthquakeswereconducted．Theresultsshowedthat①comparingwithframe-sup

6、portshearwallstructures，thestorydriftofthesubstructureoftheisolationstoryisreducedwithPMIT，however，itincreasesabout150%usingthesuspensemethod;thestructuralseismicperformancewithPMITisnotinfluenced;②comparingwithstructuresusingthesuspensemethod，thetensionforceofthelateralisolatorintheisolat

7、ionstorydecreasesabout50%onlyduringhorizontalearthquakeactionwithviscousdampersplacedinthepre-fixedgap，theoverturningresistanceperformancecanbeobviouslyimproved．Keywords:isolation;coreshearwall;elasticspring;viscousdamper［1］层间隔震是将隔震层的位置布置在结构楼层中反应衰减并受到控制。间，突破了基