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1、中国科技论文在线http://www.paper.edu.cn近场地震作用下某高层建筑设置粘滞阻尼器的减震分析11,2132**冯力强，潘存瑞，张国平，李万润，秦萍5（1.甘肃省建设投资（控股）集团总公司，兰州730050；2.甘肃建投科技研发有限公司，兰州730050；3.兰州理工大学土木工程学院，兰州730050）摘要：高烈度地震区的高层建筑在近场地震作用下具有更大的损伤风险，而采用消能减震技10术不仅可以降低高层建筑在地震作用下的风险，而且可以在整体上提高建筑的经济效益。本文以某高层建筑为例，通过采用粘滞阻尼器做
2、消能减震设计，分析了该有控结构以及无控结构在近场地震作用下的响应，包括层间位移角、层剪力和结构的能量耗散。通过对比发现，在小震和大震作用下，结构的响应均得到有效控制。粘滞阻尼器耗散了大量的能量，降低了结构构件的损伤。近场地震作用的脉冲效应会使结构产生更大的响应，在设计时应适当调整15阻尼器的参数。因此，消能减震设计可以作为高层建筑结构的一种有效解决方案。关键词：近场地震；高烈度区；高层建筑；粘滞阻尼器；减震设计；减震分析中图分类号：TU352.1Seismicreductionanalysisofahigh-riseb
3、uildingwith20viscousdamperssubjectedtonear-faultgroundmotions11,2132FENGLiqiang,PANCunrui,ZHANGGuoping,LIWanrun,QINPing(1.GansuConstructionInvestment(Holdings)GroupCorporation,Lanzhou730050;2.GCIGCofTechnology&DevelopmentCo.Ltd.,Lanzhou730050;3.SchoolofCivilEngi
4、neering,LanzhouUniversityofTechnology730050)25Abstract:High-risebuildingswhicharelocatedatnear-fielddistrictswithhighseismicintensityhasagreaterriskofcausingbuildingdamagewhensubjectedtoearthquakes,andtheenergydissipationtechnologycannotonlyreducetheriskofhigh-r
5、isebuildingunderearthquakes,butalsocanimprovetheeconomicbenefitsofbuildingonthewhole.Thestudyinthispapertakesahigh-risebuildinglocatedinLanzhouasanexample.Usingviscousdampersasenergydissipationdevices,adesignfor30seismicreductionwasperformed.Includinginterstoryd
6、riftratios,interstoryshearforces,andenergydissipationwereanalyzedundernearfieldearthquakes,.Bycomparison,itisfoundthattheresponseofthestructureiseffectivelyreducedundertheactionofsmallearthquakesandlargeearthquakes.Theviscousdampersdissipatedalargeamountofenergy
7、andpreventedthestructuralmembersfromcausingdamage.Itisconcludedthatthenear-filedgroundmotionstendtocauselargeseismic35responses,itisreasonabletoadjusttheparametersoftheviscousdamperswhendesigningsuchstructures.Therefore,energydissipationseismicreductioncanberega
8、rdedasasolutionforhigh-risebuildings.Keywords:near-faultgroundmotions;highseismicintensitydistricts;high-risebuildings;viscousdampers;designforseismicreduction;analys
