Abstract:The dynamic responses of two 8-story RC frame structures were studied respectively when the isolation layer was set in the base layer or each superstructure layer. The natural rubber bearings (LNR) or lead-rubber bearings (LRB) are adopted. 172 near-fault seismic records are input. The effect of near-fault ground motions on different story isolation structures is analyzed. The input energy of isolation structure is less than that of non-isolation structure. The input energy of LRB isolation structure is less than that of the LNR isolation structure. The maximum displacement of isolation bearing decreases and the maximum acceleration of top-story increases with the isolation layer rising. The characteristic parameters of near-fault ground motions are all correlated with the dynamic responses of isolation structures,but the degree of correlation is different. The isolated structures need to be designed in terms of the requirements of structure dynamic responses, meanwhile it should consider the position of isolation layer and the influence of seismic characteristic parameters.
韩淼 张文会 朱爱东 孙一林 李进波 . 不同层隔震结构在近断层地震作用下动力响应分析[J]. 振动与冲击, 2016, 35(5): 120-124.
Han Miao Zhang Wenhui Zhu Aidong Sun Yilin Li Jinbo. Analysis on dynamic responses of different story isolation structures to near-fault ground motions. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(5): 120-124.
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