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一、前言 对于建造在硬土地上的结构来说,现在基底隔震已成为可供选择的一种减小震害的设计方法。通过在刚性上部结构与基础间装置一组允许变形的隔震器,可以获得出色的抗震性能。这种设计方法的优点是在中等和强地面运动下,不仅能减轻结构系统的震害,还能够保护设备。设计中要考虑的一个问题是在结构系统的使用寿命内,当遭遇到可能发生的地震作用时结构及其内部设施的震害损失。有时,设计的主
I. INTRODUCTION For structures built on hard lands, nowadays basement isolation has become an alternative design method to reduce the damage. Excellent seismic performance is achieved by providing a set of isolators that allow deformation in the rigid superstructure and foundation. The advantage of this design method is that it can not only reduce the structural damage but also protect the equipment under moderate and strong ground motion. One issue to consider in the design is the loss of seismic damage to the structure and its internal facilities during the lifetime of the structural system when a possible earthquake is encountered. Sometimes, the master of design