多维地震动作用下摩擦摆基础隔震结构能量反应分析

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (5) : 241-244.

论文

多维地震动作用下摩擦摆基础隔震结构能量反应分析

王建强1 丁永刚2 李大望3

作者信息 +

Analysis on energy response of base-isolated structures with friction pendulum system under multi-axial ground motions

Wang Jian-qiang1, Ding Yong-gang2, Li Da-wang3

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文章历史 +

摘要

摘要：本文对摩擦摆基础隔震结构进行了能量反应分析，研究了多维地震动、地震烈度和支座摩擦系数对结构能量反应的影响，表明水平双向地震动输入时结构总输入能量明显增大，隔震层滞回耗能比增大，上部结构变形耗能比减小；而竖向地震动的参与使结构总输入能量略有增大，隔震层滞回耗能比减小，上部结构变形耗能比增大；随着地震动强度的提高，结构的总输入能量显著增大，隔震层滞回耗能比增大，上部结构变形耗能比减小；随着支座摩擦系数的增大，结构的总输入能量明显增大，隔震层滞回耗能比减小，上部结构的变形耗能比增大。

Abstract

Abstract: The analysis on energy response of base-isolated structures with friction pendulum system is carried out, the influence of multi-axial ground motions, seismic intensity and bearing friction coefficient about the energy response is studied. When the bilateral horizontal ground motions are considered, the total input energy of the structure and the energy dissipation ratio of base-isolation system will increase, the potential energy dissipation ratio of the superstructure will decrease. When the vertical ground excitation is considered, the total input energy of the structure and the potential energy dissipation ratio of the superstructure will increase, the energy dissipation ratio of base-isolation system will decrease. As the seismic intensity increasing, the total input energy and the energy dissipation ratio of base-isolation system will increase, the potential energy dissipation ratio of the superstructure will decrease. As the friction coefficient of the FPS increasing, the total input energy and the potential energy dissipation ratio of the superstructure will increase, and the energy dissipation ratio of base-isolation system will decrease.

导出引用

王建强丁永刚李大望. 多维地震动作用下摩擦摆基础隔震结构能量反应分析[J]. 振动与冲击, 2011, 30(5): 241-244

Wang Jian-qiang;Ding Yong-gang;Li Da-wang. Analysis on energy response of base-isolated structures with friction pendulum system under multi-axial ground motions[J]. Journal of Vibration and Shock, 2011, 30(5): 241-244