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.
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.
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.
Citation: 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.

斜拉桥参数振动有限元分析与半主动控制

FINITE ELEMENT ANALYSIS AND SEMI-ACTIVE CONTROL OF PARAMETRIC VIBRATIONS OF CABLE-STAYED BRIDGES

  • 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.

     

    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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