Coupling effects of natural modes in flutter oscillation of long-span bridges

被引：0
|
作者：
Ge, YJ [1 ]
Ding, QS [1 ]
Xiang, HF [1 ]
机构：
[1] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China
来源：
PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON ADVANCES IN WIND & STRUCTURES (AWAS'02) | 2002年
关键词：
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 in explaining the physical mechanism driving coupled flutter and investigating the coupling effects of natural modes in aerodynamic instability of long-span bridges. Both multi-mode approach and full-mode approach in frequency domain have been utilized in 3D flutter analysis of bridges. Nanpu Bridge, Yangpu Bridge both in China and Hoga Kusten Bridge in Sweden have been introduced and taken as numerical examples to illustrate the contribution of natural modes to flutter oscillation, which can be described by several coupling parameters defined, including critical flutter speed, flutter vibration frequency, modal relative amplitude and energy ratio. Based on the analytical results of these examples, several main findings involving coupling mechanism and coupling characteristics have been obtained and discussed.
引用
收藏
页码：641 / 648
页数：8
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