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Research on wind-induced vibration reduction solution of the longest cantilever state of Jiashao Bridge

机译：嘉舒桥最长悬臂状态的风力抗减振解决方案研究

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摘要

A research based on Jiashao Bridge is carried out to reduce buffeting response under strong wind of the control section of main girder of the longest cantilever state and to ensure the security of the bridge during the construction period. A method that the ends of cantilevers are connected with several temporary damping cables is considered as wind-resistant measure. 4 modes with different damping cable arrangement are supposed, and the wind-resistant effect corresponding to the 4 modes are compared by FEM analysis. A mode with the best wind-resistant effect and economical meanwhile is selected out and local optimization is added to the selected mode. Some valuable conclusion obtained from the research could be adopted in Jiashao Bridge and the similar projects.
机译：基于嘉帅桥梁的研究进行了减少了在最长悬臂状态的主梁控制部分强风下的缓冲响应，并确保施工期间桥梁的安全性。悬臂的末端与几个临时阻尼电缆连接的方法被认为是防风测量。假设具有不同阻尼电缆布置的4种模式，并且通过有限元分析比较了对应于4种模式的风力效应。选择具有最佳防风效果和经济的模式，并将本地优化添加到所选模式。从研究中获得的一些有价值的结论可以在嘉帅桥和类似项目中采用。

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