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

王建强;丁永刚;李大望

振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 22-26.

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PDF(1156 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (4) : 22-26.
论文

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

  • 王建强1; 丁永刚2; 李大望3
作者信息 +

Lateral-torsional coupled seismic response of sliding base-isolated structuresdue to the eccentric in isolation layer

  • Wang Jian-qiang1; Ding Yong-gang2; Li Da-wang3
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文章历史 +

摘要


本文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。



Abstract

Lateral-torsional coupled seismic response of sliding base-isolated structures under bi-axial ground excitations is carried out. The influence of eccentricity and torsional stiffness of the isolation layer is studied. It is shown that the influence of the stiffness eccentricity in the isolation layer is more remarkable than that of the mass eccentricity in the isolation layer. The torsional stiffness of the 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 isolator is placed symmetrically, the seismic response of the base-isolated structures can be controlled.

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

Key words

base-isolated structure / restrict-sliding bearing / mass eccentricity in the isolation layer / stiffness eccentricity in the isolation layer / torsional stiffness of the isolation layer

引用本文

导出引用
王建强;丁永刚;李大望. 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[J]. 振动与冲击, 2010, 29(4): 22-26
Wang Jian-qiang;Ding Yong-gang;Li Da-wang. Lateral-torsional coupled seismic response of sliding base-isolated structuresdue to the eccentric in isolation layer[J]. Journal of Vibration and Shock, 2010, 29(4): 22-26

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