3D flutter analysis of long-span cable-supported bridges with full-mode techniques

被引：0
|
作者：
Ge, YJ [1 ]
Tanaka, H [1 ]
Xiang, HF [1 ]
机构：
[1] Tongji Univ, Dept Bridge Engn, Shanghai, Peoples R China
来源：
FIRST INTERNATIONAL SYMPOSIUM ON WIND AND STRUCTURES FOR THE 21ST CENTURY | 2000年
关键词：
cable-supported bridges; unsteady aerodynamic forces; flutter analysis; full mode;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The present paper involves the 3D numerical analysis in the frequency domain to determine the flutter instability considering the participation of full natural modes of vibration which are particularly important for long-span cable-supported bridges. This flutter analysis method using the linear expression of unsteady aerodynamic forces formulates an asymmetric complex eigenvalue problem including entire natural modes and representing all potential flutter oscillation, but only solves several characteristic roots which contain the most important one(s) corresponding to the lowest flutter speed. Some numerical examples are given to show the effectiveness of the full-mode approach by comparing the results from other numerical procedures and wind tunnel tests.
引用
收藏
页码：453 / 460
页数：8
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