Design optimization of Magneto-rheological (MR) dampers for open-loop vibration control of stay cables

被引：0
|
作者：
Duan, Yuan-Feng [1 ]
Liao, Xiao-Wei [1 ]
Zhang, Hong-Mei [2 ]
机构：
[1] Research Center of Green Building and Low-Carbon City Development, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
[2] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
来源：
Beijing Gongye Daxue Xuebao/Journal of Beijing University of Technology | 2011年 / 37卷 / SUPPL. 1期
关键词：
Cable stayed bridges - Vibration control - Control theory - Open loop control - Stiffness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A mathematical model is presented to evaluate the damping ratio of a cable-damper system, which considers the damper coefficient, damper stiffness, damper mass, stiffness of the damper support, Magneto-dependent damper force, and sag and inclination of the cable. A 'generalized universal formula' is proposed for the damper design and optimization for the open-loop vibration of stay cables. The influence on the damping effect, of the cable inclination and sag and damper parameters, is then investigated. The procedures are proposed for design and optimization of MR dampers for all the cables on a cable-stayed bridge. By taking an actual large-span bridge as an example, the MR damper parameters and installation heights are determined for providing enough damping to suppress the rain-wind induced cable vibration.
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页码：79 / 87
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