孙  欢，  韩  淼，  段燕玲
   （北京建筑工程学院土木与交通工程学院，北京 100044）

[摘要] 近断层地震作用于基础隔震结构时，会使隔震层产生很大的位移，故提出对隔震结构隔震层进行软碰撞限位保护以及软碰撞限位器的刚度估算方法。采用SAP2000软件对近断层地震作用下软碰撞限位隔震结构模型进行计算，分析了软碰撞限位器参数对隔震结构近断层地震响应的影响规律。
[关键词] 近断层地震；基础隔震；软碰撞
中图分类号：TU352.1    文献标识码：A    文章编号：1002-848X(2012) Sl-0538-04

Analysis on spring soft-collision limiting displacement of isolating structure in near-fault ground motions
Sun Huan, Han Miao, Duan Yanling
( School of Civil Engineering ＆Traffic Engineering, Beijing University of Civil Engineering & Arclutecture, Beijing 100044, China)

Abstract: Base-isolated structures will have an excessive displacement during near-fault ground motions. The way to limit displacement of the base isolating layer using soft-collision was proposed.  The method to estimate the stiffness of soft-collision buffer was put forward. The model of soft-collision limiting displacement of isolating structure was analyzed using SAP2000, the influences of soft-collision buffer's parameters on isolating structural response was clarified.
Keywords: near-fault ground motions; base isolating; soft-collision