| LRB隔震桥梁减震效果分析 |
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| 引用本文： | 王丽, 阎贵平, 孙立. LRB隔震桥梁减震效果分析[J]. 工程力学, 2003, 20(5): 124-129. |
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| 作者姓名： | 王丽 阎贵平 孙立 |
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| 作者单位： | 1.北京工业大学建筑工程学院, 北京, 100022;2. 北方交通大学土建学院, 北京, 100044 |
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| 基金项目： | 国家自然科学基金资助项目(59978002) |
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| 摘 要： | 分别利用非线性水平和转动弹簧单元来模拟减隔震支座和桥墩延性塑性铰的非线性性能,首次把支座和桥梁结构纳入至一个系统中,并考虑其相互影响和相互作用。利用大型通用结构分析软件(ANSYS),对采用铅芯橡胶支座(LRB)隔震的桥梁输入了多条实际地震波进行时程分析,系统地讨论了隔震桥梁的减震性能,得出了一些有意义的结论。
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| 关 键 词： | LRB桥梁 隔震 非线性 时程分析 |
| 文章编号： | 1000-4750(2003)05-0124-06 |
| 收稿时间： | 2002-04-24 |
| 修稿时间： | 2002-09-13 |
ANALYSIS OF SEISMIC RESPONSE OF ISOLATED BRIDGES WITH LRB |
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| WANG Li, YAN Gui-ping, SUN Li. ANALYSIS OF SEISMIC RESPONSE OF ISOLATED BRIDGES WITH LRB[J]. Engineering Mechanics, 2003, 20(5): 124-129. |
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| Authors: | WANG Li YAN Gui-ping SUN Li |
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| Affiliation: | 1.Department of Civil Engineering, Beijing Polytechnic University, Beiing 100022, China;2. College of Civil Engineering, Northern Jiaotong University, Beiing 100044, China |
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| Abstract: | The nonlinear properties of LRB and bridge structures and their interactive effect are considered for the first time. In this paper, the nonlinear behavior of aseismic bearings and ductile plastic hinges of piers are taken into account by using nonlinear spring element. Nonlinear time history analyses of isolated bridges with the input of large numbers of seismic waves are performed. When nonlinear seismic response analysis is carried out, the isolation effect is discussed and some valuable conclusions are drawn. |
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| Keywords: | LRB bridge seismic isolation nonlinearity time-history analysis |
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