Wind-Excited Flutter Analysis of Cable-Stayed Bridge with Long Span of Pengxi River

Journal of Chongqing Jiaotong University(Natural Science) ›› 2007, Vol. 26 ›› Issue (6): 29-32.

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Wind-Excited Flutter Analysis of Cable-Stayed Bridge with Long Span of Pengxi River

LI Xi^1,2,TU Zhong-ren³, GU An-bang¹

1.School of Civil Engineering & Architecture，Chongqing Jiaotong University，Chongqing 400074，China； 2.Filiale of Bei-Fang，Expressway Develop Ltd.，Chongqing 401147，China； 3.School of River & Ocean Engineering，Chongqing Jiaotong University，Chongqing 400074，China

Received:2006-06-14 Revised:2006-10-18 Online:2007-12-15 Published:2015-01-22

彭溪河特大斜拉桥风致颤振分析

黎曦^1,2，涂忠仁³，顾安邦¹

1.重庆交通大学土木建筑学院，重庆 400074；2.重庆高速公路发展有限公司北方建设分公司，重庆 401147； 3.重庆交通大学河海学院，重庆 400074

作者简介:黎曦(1981—)，男，四川内江人，硕士生，从事高速公路建设管理及桥梁结构研究.E-mail:lixi514@126.com.

Abstract

Abstract: Focusing on the sensitivity of wind load action on cable·stayed bridge，investigated the mechanism and analytical method of wind-excited flutter.On the basis of that，taking the Pengxi river cable-stayed bridge with long span as an example，a proper dynamic calculation model Was established by using the professional software of MIDAS and with geometric nonlinear consideration.According to the dynamic behavior at both construction and completion stage，the wind-resistant behavior of the bridge was evaluated.These results provide reference for the design of wind-resistant and the analysis of dynamic stability.

Key words: long span , cable-stayed bridge, dynamic behavior, wind-resistant behavior, flutter

摘要： 针对风荷载对斜拉桥作用敏感的特点，结合振动型态特性，探讨了风致颤振机理及分析方法．在此基础上，以彭溪河特大斜拉桥为例，考虑结构几何非线性影响，使用大型桥梁专业软件MIDAS，建立了符合动力特点的空间模型，对成桥、施工危险状态进行了动力特性分析，据此评估了该桥的抗风性能，为大跨斜拉桥抗风设计及动力稳定分析提供参考依据。

关键词: 大跨径, 斜拉桥, 动力特性, 抗风性能, 颤振

CLC Number:

U448.27

LI Xi,TU Zhong-ren, GU An-bang. Wind-Excited Flutter Analysis of Cable-Stayed Bridge with Long Span of Pengxi River[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(6): 29-32.

黎曦，涂忠仁，顾安邦. 彭溪河特大斜拉桥风致颤振分析[J]. 重庆交通大学学报（自然科学版）, 2007, 26(6): 29-32.

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Wind-Excited Flutter Analysis of Cable-Stayed Bridge with Long Span of Pengxi River

彭溪河特大斜拉桥风致颤振分析

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