| 铅芯橡胶支座参数对隔震桥梁动力响应的影响 |
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| 引用本文： | 王丽,闫维明,阎贵平.铅芯橡胶支座参数对隔震桥梁动力响应的影响[J].北京工业大学学报,2004,30(3):304-308. |
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| 作者姓名： | 王丽 闫维明 阎贵平 |
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| 作者单位： | 北京工业大学,工程抗震与结构诊治重点实验室,北京,100022;北方交通大学,土建学院,北京,100044 |
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| 摘 要： | 为了使隔震支座充分发挥减震作用并使隔震设计有据可依，系统地讨论了铅芯橡胶支座的参数对桥梁结构减震性能的影响．根据减隔震技术和延性抗震设计的基本原理，考虑了铅芯橡胶支座和桥梁结构的非线性特性及其相互影响，采用非线性水平弹簧单元和转动弹簧单元模拟减隔震支座和桥墩延性塑性铰，通过理论分析和有限元数值模拟，对采用钢支座、板式橡胶支座和铅芯橡胶支座的普通铁路简支梁桥结构的地震响应特性和减隔震性能进行了比较．
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| 关 键 词： | 铅芯橡胶支座 减震 非线性 |
| 文章编号： | 0254-0037(2004)03-0304-05 |
| 修稿时间： | 2003年10月31日 |
Effect of the LRB Parameters on the Dynamic Response of Isolated Bridges |
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| Abstract: | order to understand the mechanral properties of Lead Rubber Bears, in this paper, nonlinear time history analysis of isolated bridges is conducted. According to the behavior of seismic isolation system for bridges, the nonlinear properties and mutual effect of LRB and bridge structure are considered for the first time. The nonlinear behavior of aseismic bearings and ductile plastic hinges of piers are taken into account by using nonlinear spring element. The results are compared to investigate the isolation performance of different bearings. When nonlinear seismic response analysis is carried out, the isolation effect is discussed. |
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| Keywords: | B aseismic nonlinear |
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