A parametric analysis of the flutter instability for long span suspension bridges
A parametric analysis of the flutter instability for long span suspension bridges
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DOI：
10.12989/was.2005.8.1.001
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发表时间：
2005-02
影响因子：
1.6
通讯作者：
M. Como;S. Ferraro;A. Grimaldi
中科院分区：
文献类型：
--
作者：
M. Como;S. Ferraro;A. Grimaldi
一个简化的分析能够指出最相关的几何和气动参数，可以影响大跨度现代桥梁的颤振是本文的目的。为此，采用悬索桥连续模型，采用准定常方法，给出了一个简单的垂向/扭转颤振风速组合公式。一个很好的协议是从建议的公式与颤振速度的三个现代悬索桥或斜拉桥：大带东桥，明石大桥和诺曼底大桥的预测比较。文章最后对著名的塞尔伯格公式进行了一些评论和比较。
A simplified analysis able to point out the most relevant geometrical and aerodynamic parameters that can influence the flutter of long span modern bridges is the aim of the paper. With this goal, by using a continuous model of the suspension bridge and by a quasi stationary approach, a simple formula of the combined vertical/torsional flutter wind speed is given. A good agreement is obtained comparing the predictions from the proposed formula with the flutter speeds of three modern suspension or cable stayed bridges: the Great Belt East Bridge, the Akashi and Normandie bridges. The paper ends with some comments and comparisons with the well known Selberg formula.