近断层脉冲型地震动作用下“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 structure subjected to near-fault pulse ground motion

作　　者：张慧[1] 张超[1] 侯伟[1] ZHANG Hui;ZHANG Chao;Hou Wei(Shaanxi Polytechnic Institute,Xianyang 712000,Shaanxi,China)

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000

出　　处：《粘接》2022年第4期188-192,共5页Adhesion

基　　金：陕西工业职业技术学院2021年院级科研计划项目(2021YKYB-067)。

摘　　要：采用“先滑后限”的隔震装置,建立“先滑后限”的滑移隔震结构模型,输入近断层脉冲型和近断层非脉冲型两种地震波,对比分析“先滑后限”的滑移隔震结构在近断层脉冲型地震动作用下的动力响应(层间位移、加速度、层间剪力)的变化规律。分析结果表明,近断层脉冲型地震动作用下的各层层间位移、加速度、层间剪力较之近断层非脉冲型地震动作用下对应层的层间位移、加速度、层间剪力明显增大,且随地震烈度的增加,层间位移、加速度的增大幅度在减小,而层间剪力的增大幅度在提高。因此,不能忽视近断层脉冲型地震对“先滑后限”的滑移隔震结构的影响,从而确保结构设计安全。The“sliding,later limited”isolation device was adopted,and the“sliding,later limited”sliding isolation structure model was established.Two types of near-fault pulse and near-fault non-pulse seismic waves were input,and the dynamic response(interlayer displacement,acceleration and interlayer shearing force)of the“sliding,later limited”sliding isolation structure under the action of near-fault pulse ground motion was analyzed.Analysis results show that interlayer displacement,acceleration and interlayer shearing force subjected to near-fault pulse ground motion increase obviously than near-fault non-pulse ground motion,and with the increase of earthquake intensity,increase amplitude of interlayer displacement and acceleration is decreasing,but the increase amplitude of interlayer shearing force is increasing.Therefore,the impact of near-fault pulse earthquakes on“sliding,later limited”sliding isolation structure cannot be ignored,so as to ensure the safety of structure design.

关 键 词：先滑后限 滑移隔震 近断层脉冲型地震动 动力响应 

分 类 号：TU352.1[建筑科学—结构工程]