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1、中國(guó)科技論文在線http://www.paper.edu.cn近場(chǎng)地震作用下某高層建筑設(shè)置粘滯阻尼器的減震分析11,2132**馮力強(qiáng)，潘存瑞，張國(guó)平，李萬(wàn)潤(rùn)，秦萍5（1.甘肅省建設(shè)投資（控股）集團(tuán)總公司，蘭州730050；2.甘肅建投科技研發(fā)有限公司，蘭州730050；3.蘭州理工大學(xué)土木工程學(xué)院，蘭州730050）摘要：高烈度地震區(qū)的高層建筑在近場(chǎng)地震作用下具有更大的損傷風(fēng)險(xiǎn)，而采用消能減震技10術(shù)不僅可以降低高層建筑在地震作用下的風(fēng)險(xiǎn)，而且可以在整體上提高建筑的經(jīng)濟(jì)效益。本文以某高層建筑為例，通過(guò)采用粘滯阻尼器做
2、消能減震設(shè)計(jì)，分析了該有控結(jié)構(gòu)以及無(wú)控結(jié)構(gòu)在近場(chǎng)地震作用下的響應(yīng)，包括層間位移角、層剪力和結(jié)構(gòu)的能量耗散。通過(guò)對(duì)比發(fā)現(xiàn)，在小震和大震作用下，結(jié)構(gòu)的響應(yīng)均得到有效控制。粘滯阻尼器耗散了大量的能量，降低了結(jié)構(gòu)構(gòu)件的損傷。近場(chǎng)地震作用的脈沖效應(yīng)會(huì)使結(jié)構(gòu)產(chǎn)生更大的響應(yīng)，在設(shè)計(jì)時(shí)應(yīng)適當(dāng)調(diào)整15阻尼器的參數(shù)。因此，消能減震設(shè)計(jì)可以作為高層建筑結(jié)構(gòu)的一種有效解決方案。關(guān)鍵詞：近場(chǎng)地震；高烈度區(qū)；高層建筑；粘滯阻尼器；減震設(shè)計(jì)；減震分析中圖分類號(hào)：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
