基础隔震结构扭转减震评价

英文篇名：The damping evaluation of the base-isolated structures
中文刊名：山西建筑
英文刊名：Shanxi Architecture
作者：夏同雪 ; 毛利军 ; 王倩玲
英文作者：XIA Tong-xue MAO Li-jun WANG Qian-ling(College of Aerospace Engineering ; Nanjing University of Aeronautics and Astronautics ; Nanjing 210000 ; China)
中文关键词：ETABS ; 扭转角 ; 水平减震系数 ; 扭转减震系数
英文关键词：ETABS ; torsion angle ; the horizontal damping coefficient ; the torsion damping coefficient
出版日期：2013-01-20
机构：南京航空航天大学航空宇航学院;
年：2013
期：03
出版单位：山西建筑

摘要

对不同隔震层偏心率的基础隔震结构进行了分析,提出了扭转减震系数的概念。通过对比水平减震系数与扭转减震系数,得到如下结论:隔震层偏心率在5%以下时,上部结构水平减震系数要大于扭转减震率;当隔震层偏心率大于5%时,上部结构水平减震系数要小于扭转减震系数,此时结构减震效果不能用水平减震系数来表示。
Analyzed the different isolation layer eccentrictiy of the base-isolated structures,proposed the concept of the torsion damping coefficient.By comparing the horizontal damping coefficient with the torsion damping coefficient,conclusions are drawn: when the isolation layer eccentricity < 5%,the damping coefficient of upperstruc ture is greater than the torsion damping coefficient,when the isolation layer eccentricity > 5%,the horizontal damping coefficient of upperstruc ture is less than the torsion damping coefficient,the structure damping effect can’t be represented by the horizontal damping coefficient at this time.

引文

[1]江宜城,唐家祥.单轴偏心的基础隔震结构扭转反应分析[J].华中理工大学学报,1999(6):81-83.
    [2]江宜城,唐家祥,李媛萍.多层框架隔震结构的地震扭转反应分析[J].工程抗震,2000(2):12-14.
    [3]Crosbie.R.L.Base isolation for torsion reduction in asymmetric structures under earthquake Loadings[J].Earthquake Eng Struct Dyn,1977(3):97-99.
    [4]魏德敏.基础隔震高层建筑地震响应的理论分析[J].地震工程与工程振动,2003(1):140-144.
    [5]Arturo Tena-Colunga,Christian Zambrana-Rojas.Dynamic tor-sional amplification of base-isolated structure with an eccentric isolation system[J].Engineering Structure,2006(28):72-83.
    [6]GB50011-2010,建筑抗震设计规范[S].
    [7]牛力军,张文芳.某教学楼在不同隔震参数配置下的减震系数研究[J].土木工程学报,2010,43(S1):329-333.
    [8]Lee D M.Base isolation for torsion reduction in asymmetric struc-tures under earthquake loading[J].Earthq.Engrg.Struc.Dyn,1979,8(3):349-359.
    [9]Pan T C,Kelly J M.Seismic response of torsionally coupled base isolated structures[J].Earthq.Engrg.Struc.Dyn,1982,11(6):749-770.
    [10]Satish Nagarajaiah,Andrei M Reinhorn,Michalakis C Constantin-ou.Torsion in Base-isolated Structures with Elastomeric Isola-tion Systems[J].Journal of Structural Engineering,1993,119(10):2932-2951.
    [11]M.Eisenberger,A.Rutenberg.Seismic base isolation of asymmetricshear buildings[J].Journal of Engineering Structures,1986(8):2-8.