高层分段隔震结构的动力响应分析  

Analysis of dynamic responses of the high-rise structure controlled by segmented isolation

作　　者：王学庆[1] 刘海卿[1] 

机构地区：[1]辽宁工程技术大学土木建筑工程学院,辽宁阜新123000

出　　处：《地震工程与工程振动》2008年第1期170-174,共5页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50678079)

摘　　要：本文提出了一种基于叠层橡胶支座的大高宽比高层建筑分段隔震结构形式,并对同一高层建筑结构分别采用基础隔震、层间隔震和分段隔震三种不同形式时进行了数值模拟对比分析。结果表明,采用分段隔震形式可明显减小高层建筑结构的顶层侧向位移、中间隔震层的相对位移和下支柱端应力,使结构的侧向位移集中于两个隔震层上,耗散了大部分地震输入能量,保障了与隔震层相连的构件的安全性,防止了由于支座受拉或剪压破坏导致上部结构倾覆倒塌现象的发生。A new form of isolation, the segmented isolation, applied to the large aspect ratio high-rise structure is put forward based on the laminated rubber bearing （LRB）, and the numerical simulation in the same high-rise structure controlled by the segmented isolation is carried out compared with the base and the story isolation. It is shown that the lateral displacements are concentrated on the isolation layer and most of seismic energy is dissipated. The lateral displacement of roof, the relative displacement of mid isolation and the stress at the bearing column top of segmented isolation structure are dramatically decreased, and the security of the frame member connected with isolators is ensured. As a result, the phenomena of overturning collapse caused by the tensile failure of LRB can be avoided.

关 键 词：分段隔震 高层建筑结构 数值模拟 动力响应 叠层橡胶支座 

分 类 号：P315.966[天文地球—地震学]