湖南大学学报（自然科学版）Issue(1)：1-10,10.
大跨度悬索桥吊索减振技术研究与应用
Research and Application of Vibration Control Method for Hanger Cables in Long-span Suspension Bridge
摘要
Abstract
The hanger cables of long-span suspension bridges are susceptible to wind-induced vibration as they have low natural frequencies and low mechanical damping.In this paper,the wind-induced vibra-tion problem of the hanger cables of Xihoumen Bridge was investigated to research the vibration control method.Firstly,the dynamic characteristics of the hanger cables were obtained by environmental incentive method.Then,the scheme of installing spacers was determined by theoretical analysis and wind tunnel ex-periments,in addition,the influence of the number of spacers on vibration-reduction efficiency was investi-gated in the experiments.Finally,according to the field test of the wind-induced vibration of two hanger cables with and without spacer respectively conducted in strong wind weather,the results indicates that af-ter installation of the spacers,the collision phenomenon between the strands is eliminated.Moreover,the vibration of different modes of the hanger cable is significantly reduced by 55%~95%.关键词
大跨度悬索桥/吊索/风致影响/分隔器/完全气弹模型/现场实测Key words
long-span suspension bridge/hanger cable/wind effects/spacer/full aeroelastic model/field tests分类
交通工程引用本文复制引用
陈政清,雷旭,华旭刚,李寿英,颜永先,温青,牛华伟..大跨度悬索桥吊索减振技术研究与应用[J].湖南大学学报（自然科学版）,2016,(1):1-10,10.基金项目
国家自然科学基金资助项目（51422806，91215302），National Natural Science Foundation of China （）
