隔震结构特性测试新方法

A New Way to Test the Dynamic Characteristic of Isolation Building

隔震作为一条崭新的抗震新途径,在我国得到了越来越多的研究和应用,但是在事先检验隔震层构造、检验隔震效果方面还缺乏有效的手段。本文提出了一个新的检验方法—推力释放法,即在隔震层上下结构间设置几组牛腿,以大吨位千斤顶将上部结构推开后释放,由此测出大位移情况下隔震结构的动态特性,同时也检验了隔震层构造。本法为隔震结构特性测试开辟了新的途径。

As a new seismic design method, the base-isolation buildings are researched and applied more tham ever. However, it is lack of some effective means to test the construction and effect of the isolation layer. In this paper, the thrust release technique is presented to break a new path to test the dynamic characteristic of isolation building. By installing some groups of corbel between the isolation layer, pushing the topper upon with the large tonnage jack and then releasing, the dynamic characteristic and the stability of the isolation layer can be measured under the large displacement.