| 铅芯橡胶支座参数对隔震储罐地震响应的影响 |
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| 引用本文： | 李扬,李自力.铅芯橡胶支座参数对隔震储罐地震响应的影响[J].四川建筑科学研究,2009,35(4). |
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| 作者姓名： | 李扬 李自力 |
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| 作者单位： | 中国石油大学(华东)储运与建筑工程学院,山东,东营,257061 |
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| 摘 要： | 利用Bouc-Wen模型模拟铅芯橡胶支座的力-变形非线性行为,研究了两种高径比铅芯橡胶支座(LRB)隔震储罐的地震动力响应特征,系统探讨铅芯橡胶支座动力参数对隔震储罐地震反应的影响规律.研究表明:基底设置铅芯橡胶支座后,储罐有良好的减震效果,减震效果评价指标基底剪力、支座位移、晃动波高都得到有效控制.隔震频率是影响LRB隔震储罐减震性能的主要参数,屈服强度参数、支座阻尼比影响次之.增大支座屈服强度可增加有效隔震频率范围,降低支座位移,但不一定能起到降低波高作用.高隔震频率、无阻尼比工况时,储罐地震响应远超过未隔震时响应;增大阻尼比可同时降低支座位移和晃动波高.在高隔震频率下,存在最优屈服强度和阻尼比,使得基底剪力最小.为使隔震支座发挥最大减震作用,应根据储罐不同高径比特点来优化配置铅芯橡胶支座参数.
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| 关 键 词： | 隔震储罐 铅芯橡胶支座 Bouc-Wen模型 地震响应 |
The influence of isolator characteristics on the seismic response of base-isolated tank |
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| LI Yang,LI Zili.The influence of isolator characteristics on the seismic response of base-isolated tank[J].Building Science Research of Sichuan,2009,35(4). |
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| Authors: | LI Yang LI Zili |
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| Affiliation: | LI Yang,LI Zili(College of Transport & Storage , Civil Engineering,China University of Petroleum,Dongying 257061,China) |
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| Abstract: | The nonlinear seismic response of two types of the based-isolated storage tank with lead rubber bearing(LRB) are investigated.The Bouc-Wen model is adopted to simulate the non-linear hysteretic characteristics of force-displacement relationship for LRB.The influence of LRB parameters on the response of base-isolated tank is analyzed.The result indicates that the lead rubber bearing have a good effect on reducing the base shear,bearing displacement and sloshing height.Compared with the yield strength and dam... |
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| Keywords: | isolated tank lead rubber bearing Bouc-Wen model seismic response |
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