基础隔震结构的能量反应分析

Analysis of the energy response of base-isolated structures

文章通过建立有隔震和无隔震的4层框架结构的分析模型,对其分别输入3条典型的地震波进行地震能量反应分析,结果表明隔震结构能较好地满足能量方程;适当降低隔震支座屈服强度对于保护上部结构更加有利;地震波的能量持时和卓越周期对结构地震能量反应具有重大影响。

Based on the introduction of the energy equations and analysis models of base-isolated structures,the analysis models of a four-floor frame structure are built, and the energy responses of the structure and the effect of seismic isolation bearings are discussed as three typical seismic waves are input. It is concluded that the base-isolated structure can meet the energy equation, that reducing the yield strength of seismic isolation bearings properly is more beneficial to protecting the superstruc- ture,and that the energy lasting time and the predominant period of seismic waves have significant effects on the structure＇s energy response.