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《Journal of Earthquake Engineering and Engineering Vibration》 2009-03
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Earthquake response and control analysis of an eccentric structure with dampers

DENG Xuesong,NIE Yiheng,TANG Tongbi,ZHOUYun(School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)  
An eccentric structure was selected as an example in this paper.Three-dimensional finite element modelwas constructed by using SAP2000.According to the natural characteristics of the building,five kinds of dampingcontrol plans of added viscous dampers,viscoelastic damper,metal damper,lead-viscoelastic dampers and steelbraces were put forward to restrain the torsional response.In order to research period ratio,inter-story displace-ment,brace inner-force and energy dissipation behavior of dampers for the five control plans,this paper studiesmodel analysis,response spectrum analysis and history analysis.The results showthat all of the five control planshave behavior of restraining torsional response and reducing the max inter-story displacement greatly.The last fourcontrol plans can reduce the period ratio effectively and control the torsional response almost completely for the firstmodel.In order to achieve the optimal torsional-control effect for this eccentric structure,this paper suggests thatdampers should be installed away from the rigidity center.
【Fund】: 科技部重大基础研究前期专项项目(2004CCA03300);; 广州市科技攻关重大项目(2004Z1-E0051)
【CateGory Index】: TU352.1
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