不同自滑区长度下“先滑后限”的滑移隔震结构动力响应分析  

Dynamic response analysis of “sliding,later limited”sliding isolation system under different length of free sliding zone

作　　者：张超[1] 张慧[1] 熊仲明[2] Zhang Chao;Zhang Hui;Xiong Zhong-ming(Shaanxi Polytechnic Institute,Xianyang 712000,China;Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]陕西工业职业技术学院土木工程学院,陕西咸阳712000 [2]西安建筑科技大学,陕西西安710055

出　　处：《工程抗震与加固改造》2020年第6期70-75,83,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：陕西省教育厅专项基金(12JK0895);陕西工业职业技术学院2020年院级科研计划项目(2020YKYB-017)。

摘　　要："先滑后限"的滑移隔震体系具有良好的隔震性能。自滑区长度是"先滑后限"的滑移隔震体系限位装置的重要参数,将直接影响限位装置的限位效果。本文首先探讨了自滑区长度的确定,提出合理的最大自滑区长度应满足的条件。采用SAP2000有限元分析软件,研究在不同自滑区长度下"先滑后限"的滑移隔震结构基底滑移量及上部结构动力响应的变化规律。分析结果表明,对于"先滑后限"的滑移隔震结构,当选择合理的自滑区段,可以使基底剪力和结构三个代表层的加速度相对维持在较低的数值,使得上部结构的地震反应大幅减少,隔震效果显著。"Sliding,later limited"sliding isolation system has good isolation performance.Length of free sliding zone is an important parameter of the limiting device of "sliding,later limited"sliding isolation system,which will directly affect the effect of limiting.Firstly,determination of length of free sliding zone is discussed and the conditions for a reasonable maximum length of the self-slip zone are proposed.Dynamic response of upper structure and base slip under different length of free sliding zone is studied by finite element analysis program SAP2000.The analysis results show that for"sliding,later limited"sliding isolation system,when a reasonable selfslip section is selected,base shear and acceleration of three representative layers of the structure can be maintained at a relatively low value,so that seismic response of upper structure is greatly reduced and isolation effect is significant.

关 键 词：先滑后限 滑移隔震 自滑区长度 动力响应 

分 类 号：TU352.1[建筑科学—结构工程]