| 大跨径拱桥被动减震控制的仿真分析 |
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| 引用本文： | 李正英,李正良,熊辉,郭惠勇,周志祥.大跨径拱桥被动减震控制的仿真分析[J].地震工程与工程振动,2005,25(6):172-177. |
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| 作者姓名： | 李正英 李正良 熊辉 郭惠勇 周志祥 |
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| 作者单位： | 重庆大学,土木工程学院,重庆,400045;重庆交通学院,重庆,400074 |
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| 基金项目： | 国家重大基础研究前期研究专项（2003CCA01500） |
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| 摘 要： | 本文采用现代控制理论对设有耗能减震装置的拱桥结构进行被动减震控制仿真分析，给出了大跨度拱桥在多点激励下的运动微分方程，将拱桥简化成平面杆系模型，给出减震结构的状态方程，然后基于SIMULINK环境下对设有粘滞阻尼器的拱桥减震结构进行动态仿真分析，并考虑了行波效应对减震效果的影响。该方法较之传统的分析方法更简便、有效，分析结果表明设置了耗能器的拱桥结构地震反应有明显的降低。
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| 关 键 词： | 拱桥 被动减震 控制 粘滞耗能器 |
| 文章编号： | 1000-1301（2005）06-0172-06 |
| 收稿时间： | 2005-04-14 |
| 修稿时间： | 2005-04-142005-06-03 |
Seismic simulation of passive energy dissipation arch bridge |
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| Li Zheng-ying,Li Zheng-liang,Xiong Hui,Guo Hui-yong,Zhou Zhi-xiang.Seismic simulation of passive energy dissipation arch bridge[J].Earthquake Engineering and Engineering Vibration,2005,25(6):172-177. |
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| Authors: | Li Zheng-ying Li Zheng-liang Xiong Hui Guo Hui-yong Zhou Zhi-xiang |
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| Institution: | 1, Faculty of Civil Engineering, Chongqing University, Chongqing 400045, China; 2, Chongqing Jiaotong Univesity Chongqing 400074, China |
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| Abstract: | In this paper, the passive energy dissipation arch bridge is analyzed in terms of modem control theory. The dynamic differential equation of long-span arch bridge subjected to multi-support seismic excitation is presented and the arch bridge is simplified as an two-dimensional bar-system model, and then the state equation of passive control structure is derived. According to the equation , seismic simulation of arch bridge with viscous dampers is carried out through the SIMULINK toolbox in MATLAB and traveling wave effects on the responses of structure are considered. The method is more simple and efficient than the conventional methods, and the results demonstrate that the responses of arch bridge are decreased with the addition of energy dissipation system. |
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| Keywords: | arch bridge passive energy dissipation control viscous damper |
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