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以目前国内最高隔震住宅楼即玉溪公租房项目B户型中一幢总高度为89.9m、高宽比为3.91的高层剪力墙铅芯橡胶垫隔震结构为研究对象,根据相似理论,设计制作了1∶12的缩尺模型进行地震模拟振动台试验。试验结果表明:在8度小震、中震、大震作用下,结构整体以平动为主,侧向水平位移集中在隔震层,隔震支座不会出现拉应力,上部结构仍然处于弹性状态,结构不会发生倾覆,相关指标均满足现行设计规范的要求,实际抗震性能高于“三水准性能要求”。研究结果为在以8度为代表的高烈度区建造高宽比较大的高层隔震剪力墙结构的可行性提供了有力的支撑。
Based on the similar theory, the design of the isolation structure of the lead rubber core of the high-rise shear wall with the total height of 89.9m and the height-width ratio of 3.91, which is currently the highest isolation residential building in China, namely Yuxi public rental housing project B, A 1:12 scale model was made to simulate shaking table test. The experimental results show that under the action of 8-degree small earthquakes, moderate earthquakes and large earthquakes, the whole structure is mainly in translational motion, lateral horizontal displacement is concentrated in the seismic isolation layer, and no tensile stress occurs in the isolated bearings. The superstructure is still in Elastic state, the structure will not overturn, the relevant indicators meet the requirements of the current design specifications, the actual seismic performance is higher than the “three-level performance requirements ”. The results provide a strong support for the feasibility of building high-rise high-rise seismic isolation shear wall structures in the high intensity region represented by 8 degrees.