铁道标准设计2025，Vol.69Issue(9)：81-86,94,7.DOI:10.13238/j.issn.1004-2954.202311290001
常泰长江大桥超长斜拉索风致振动控制方法研究
Study on Wind-Induced Vibration Control Method for Super-Long Stay Cable of Changtai Yangtze River Bridge
摘要
Abstract
To address the wind-induced vibration control of super-long stay cables of Changtai Yangtze River Bridge,considering its unique steel box-core concrete composite cable tower anchorage structure,three coordinated damping methods applied at both beam end and tower end were proposed.A comparative analysis was conducted from two aspects:multimodal satisfaction and landscape impact.The results showed that vortex-induced vibration of orders 47 to 61 could occur in the longest stay cable of Changtai Yangtze River Bridge under frequently encountered level-6 wind,indicating that this vibration issue warranted special attention.The vibration control of the super-long stay cable was achieved using three coordinated vibration reduction methods:beam-end LMD coordinated with a pendulum-type tuned mass damper in tower,beam-end FVD coordinated with a pendulum-type tuned mass damper in tower,and beam-end LMD coordinated with FVD at the steel tower end.The method of beam-end LMD combined with steel tower-end FVD utilized the vibration reduction characteristics of both dampers,achieving a multimodal satisfaction index of 0.987.It exhibited superior damping performance compared with the other two coordinated methods.The damper that controlled the mid-to-high-order vibration of the cable was installed at the beam end,requiring minimal installation space and a low installation height,resulting in minimal impact on the landscape.Considering both vibration reduction effect and landscape impact,the cooperative damping method using beam end-LMD to control the mid-to-high-order vibration of super-long stay cable and steel tower-end FVD to control the low-to-mid order vibrations is preferable.关键词
公铁两用桥/斜拉桥/超长斜拉索/风致振动/高阶振动/协同阻尼减振方法/杠杆质量阻尼器/黏滞阻尼器/摆锤式调谐质量阻尼器Key words
road-cum-rail bridge/cable-stayed bridge/super-long stay cable/wind-induced vibration/high-order vibration/coordinated damping vibration reduction method/lever mass damper/fluid viscous damper/pendulum-type tuned mass damper分类
交通工程引用本文复制引用
刘鹏飞,蒋振雄,黄健,杨林,汪正兴..常泰长江大桥超长斜拉索风致振动控制方法研究[J].铁道标准设计,2025,69(9):81-86,94,7.基金项目
中国中铁股份有限公司科技研究开发计划重大专项课题(2021-专项-04-01) （2021-专项-04-01）
