结构特性对基础隔震结构隔震层响应的影响

Study on the effect of structural characteristic change on the acceleration response of base-isolated structure

明确结构特性的改变对基础隔震结构响应的影响可为近场地区基础隔震结构的设计提供指导。通过分析基础隔震结构隔震层的阻尼比、原始结构与隔震结构的频率比、上部结构与隔震层的质量比,探讨结构参数变化对基础隔震结构响应的影响问题。分析结果表明结构参数改变,不影响基础隔震结构隔震层反应谱的谱型,但会对谱值产生一定的影响,同时给出了周期比的范围及质量比的要求,为基础隔震结构的设计提供了建议。

It can provide guidance for the design of base-isolated structures in near-field area,which to know the effect of structural characteristics on the response of base-isolated structures.In this paper,the damping ratio of base isolation layer,the frequency ratio of original structure to base-isolatied structure and the mass ratio of superstructure to base isolation layer are analyzed,the influence of structural parameters on the response of base-isolated structure is discussed.The analysis results show that the change of structural parameters does not affect the spectra type of base-isolated structure,but has some influence on the spectra value,some suggestions are given for the design of base-isolated structures.