近断层地震作用下隔震结构弹簧软碰撞限位分析

Analysis on spring soft-collision limiting displacement of isolating structure in near-fault ground motions

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。

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 softcollision 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.