Seismic Response of Rolling Isolation Systems with Concave Friction Distribution

Seismic Response of Rolling Isolation Systems with Concave Friction Distribution
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凹形摩擦分布滚动隔震系统的地震响应

DOI:
10.1080/13632469.2016.1157530
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发表时间:
2017-02
影响因子:
2.6
通讯作者:
Jiang Lizhong
Jiang Lizhong
中科院分区:
工程技术3区
文献类型:
--
作者:
Wei Biao;Wang Peng;Yang Menggang;Jiang Lizhong

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本文通过假设滚动摩擦力随隔振器与地面的相对位移逐渐线性增加,试图提高滚动隔振系统的隔振性能。采用数值分析方法对不同地震动作用下的滚动隔震系统进行了计算,得到了比其他非均匀摩擦分布更为规则的结果。结果表明,考虑的凹分布摩擦力不仅会耗散地震能量,而且会改变结构的自然周期。与一般均匀分布的滚动摩擦系数相比,这些函数提高了结构相对位移的隔震效果。
This article attempted to improve the isolation performance of a rolling isolation system by assuming that the rolling friction force gradually and linearly increased with the relative displacement between the isolator and the ground. After the rolling isolation system under different ground motions was calculated by a numerical analysis method, it obtained more regular results than that of other uneven friction distributions. Results shows that the considered concavely distributed friction force can not only dissipate the earthquake energy, but also change the structural natural period. These functions improve the seismic isolation efficiency of the structural relative displacement in comparison with the general uniform distribution of rolling friction coefficient.
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