隔震层(偏心)对基础滑移隔震结构平-扭耦联地震反应的影响

英文篇名：Lateral-torsional coupled seismic response of a sliding base-isolated structure with an eccentric in isolation layer
中文刊名：振动与冲击
英文刊名：Journal of Vibration and Shock
作者：王建强 ; 杜兴量 ; 丁永刚
英文作者：WANG Jian-qiang1 ; DU Xing-liang2 ; DING Yong-gang3(1.School of Civil Engineering ; Zhengzhou University ; Zhengzhou 450001 ; China ; 2.Department of Engineering Economy ; Henan College of Finance & Taxation ; Zhengzhou 450002 ; China ; 3.School of Civil Engineering and Architecture ; Henan University of Technology ; Zhengzhou 450052 ; China)
中文关键词：基础隔震结构 ; 限位滑移支座 ; 隔震层质量偏心 ; 隔震层刚度偏心 ; 隔震层抗扭刚度
英文关键词：base-isolated structure ; restrict-sliding bearing ; mass eccentricity in isolation layer ; stiffness eccentricity in isolation layer ; torsional stiffness of isolation layer
出版日期：2010-04-25
机构：郑州大学土木工程学院;河南财政税务高等专科学校工程经济系;河南工业大学土木建筑学院;
年：2010
期：04
出版单位：振动与冲击

摘要

对多层基础滑移隔震结构进行了水平双向地震作用下的平-扭耦联地震反应分析,研究了隔震层偏心和隔震层抗扭刚度对结构地震反应的影响,分析表明,隔震层刚度偏心比隔震层质量偏心对基础滑移隔震结构地震反应的影响较大;隔震层的抗扭刚度对隔震支座位移有一定程度的影响,增大隔震层的抗扭刚度可减小隔震支座的位移;当隔震层中隔震支座均匀对称布置时,基础隔震偏心结构的地震反应可以得到较好的控制。
Lateral-torsional coupled seismic response of a sliding base-isolated structure under bi-axial ground excitations was analyzed.The influence of eccentricity and torsional stiffness of its isolation layer was studied.It was shown that the influence of the stiffness eccentricity of its isolation layer is more remarkable than that of the mass eccentricity of its isolation layer;the torsional stiffness of its isolation layer has an impact on the displacement of the isolator,so the displacement of the isolator can be decreaseed by increasing the torsional stiffness of the isolation layer;when the isolators are placed symmetrically,the seismic response of the base-isolated structure can be well controlled.

引文

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