列车提速后的铁路桥梁横向振动控制

英文篇名：Lateral Vibration Control of Railway Bridge Subject to High Speed Train
中文刊名：振动.测试与诊断
英文刊名：Journal of Vibration ; Measurement & Diagnosis
作者：同长虹 ; 黄建龙 ; 李国芳 ; 张小栋
英文作者：Tong Changhong1 ; Huang Jianlong2 ; Li Guofang1 ; Zhang Xiaodong3(1Institute of mechanical detection and fault diagnosis ; Lanzhou City University Lanzhou ; 730070 ; China)(2School of Mechanical-electrical Engineering ; Lanzhou University of Technology Lanzhou ; 730050 ; China)(3School of Mechanical Engineering ; Xi'an Jiaotong University Xi'an ; 710049 ; China)
中文关键词：蛇行运动 ; 横向振动 ; 拍击 ; 减振控制 ; 列车提速 ; 铁路桥梁
英文关键词：hunting motion lateral vibration rattling vibration control raising train's speed railway bridge
出版日期：2010-04-15
机构：兰州城市学院机械检测与故障诊断研究所;兰州理工大学机电学院;西安交通大学机械工程学院;
年：2010
期：02
出版单位：振动.测试与诊断

摘要

列车提速后,列车轮轴横向荷载击打轮轨-桥梁的频率提高,列车横向蛇形运动加剧。跨距大于等于32 m的桥梁可能出现拍击振动。在建立桥梁横向振动方程的基础上,分析了列车时速与列车轮轴激振荷载频率的关系。依据所建立的列车轮轴荷载作用的横向振动模型,提出了在两桥(或两梁)间增设弹性连接和加装调谐质量阻尼器的减振方案。
The frequency of train wheel-shaft load impacting on the rail rises after the train speed is raised,and the possibility of rattling increases for a bridge length of span longer than 32 meters.In this paper,a vibration equation of a railway bridge was presented and the relationship between the train speed and the frequency of the load striking the rail was analyzed.Based on the rattling model presented in this paper two damping methods were proposed: adding some elastic links between the coupled single-row bridges(or between the two T-shaped girders),or adding tuned mass dampers in the middle of the bridge.

引文

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