| 斜拉桥参数振动有限元分析与半主动控制 |
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| 引用本文： | 李忠献, 陈海泉, 李延涛. 斜拉桥参数振动有限元分析与半主动控制[J]. 工程力学, 2004, 21(1): 131-135. |
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| 作者姓名： | 李忠献 陈海泉 李延涛 |
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| 作者单位： | 天津大学建筑工程学院, 天津, 300072 |
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| 基金项目： | 国家自然科学基金资助项目(50178047)，高等学校骨干教师资助计划项目 |
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| 摘 要： | 采用有限单元法分析了斜拉桥的非线性参数振动问题,验证了在一定的频率范围内斜拉索与桥面板会发生参数共振;提出了应用形状记忆合金(SMA)对斜拉桥的参数振动实施半主动控制,并数值模拟了其控制效果,结果表明,斜拉桥参数振动的SMA半主动控制,不仅能大幅度地降低斜拉索和桥面板的振动,而且能有效地抑制斜拉桥参数共振的发生.
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| 关 键 词： | 斜拉桥 参数振动 有限元分析 半主动控制 形状记忆合金(SMA) 共振 |
| 文章编号： | 1000-4750(2004)01-0131-05 |
| 收稿时间： | 2002-07-16 |
| 修稿时间： | 2002-12-26 |
FINITE ELEMENT ANALYSIS AND SEMI-ACTIVE CONTROL OF PARAMETRIC VIBRATIONS OF CABLE-STAYED BRIDGES |
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| LI Zhong-xian, CHEN Hai-quan, LI Yan-tao. FINITE ELEMENT ANALYSIS AND SEMI-ACTIVE CONTROL OF PARAMETRIC VIBRATIONS OF CABLE-STAYED BRIDGES[J]. Engineering Mechanics, 2004, 21(1): 131-135. |
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| Authors: | LI Zhong-xian CHEN Hai-quan LI Yan-tao |
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| Affiliation: | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The nonlinear parametric vibration analysis of cable-stayed bridges is conducted using finite element method. The parametric resonances between the stay cable and the bridge deck that may occur in a certain frequency domain are identified. The semi-active control using Shape Memory Alloys (SMA) on the parametric vibrations of cable-stayed bridges is performed and the control effect for a cable-stayed bridge is numerically simulated. Results show that, after employing the SMA semi-active control, not only the parametric vibrations of the stay cable and the bridge deck can be significantly reduced, but also the parametric resonances of the cable-stayed bridge can be effectively suppressed. |
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| Keywords: | cable-stayed bridge parametric vibration finite element analysis semi-active control Shape Memory Alloys (SMA) resonance |
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