单自由度双线性隔震装置地震反应研究

本文用多条具有相同反应谱的人工地震波，对单自由度双线性系统进行了大量的非线性时程反应分析，讨论了采用双线性隔震装置结构的地震反应特点，研究了双线性隔震装置的刚度比、初始屈服位移等因素对结构地震反应的影响。研究结果对工程设计中合理选择双线性隔震装置的刚度比、初始屈服位移等设计参数有一定的参考价值。

SEISMIC RESPONSE OF BILINEAR SEISMIC ISOLATION DEVICES WITH SINGLE DOF

s: Numerous nonlinear time history analyses of single-degree-of-freedom bilinear system are carried out by the use of large numbers of seismic waves. These waves have the same response spectrum and the similar envelope in time-domain. The seismic response features of structures with bilinear seismic isolation devices are discussed. The influences of parameters on seismic response of seismic isolated structures are studied. These parameters are the initial yielding displacement and the ratio of the inelastic stiffness to the elastic stiffness of bilinear seismic isolation devices. The present results may have some reference value to the designing of structures with bilinear seismic isolation devices.