中速磁浮列车-轨道梁-桥墩横向耦合振动分析  

Analysis of lateral coupling vibration of medium-speed maglev train-guideway girder-bridge pier

作　　者：黎远健 王淼[1] 滕念管[1] LI Yuanjian;WANG Miao;TENG Nianguan(School of Naval Architecture,Ocean&Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《甘肃科学学报》2024年第1期63-71,共9页Journal of Gansu Sciences

基　　金：国家重点研发计划(2016YFB1200602-28)。

摘　　要：为研究桥墩参与作用的中速磁浮横向耦合振动,基于车辆动力学、结构动力学和PD控制算法原理,建立了考虑桥墩参与振动的车-桥横向动力分析模型。基于Mathematica编写的仿真程序分析了中速磁浮系统横向耦合振动的动力响应,研究了桥墩高度变化对系统振动的影响规律。研究结果表明,风荷载是中速磁浮系统横向耦合振动的主要激振源;是否考虑桥墩受风荷载作用对车辆系统动力响应的影响有限,桥墩高度变化对车辆系统的动力响应影响较小;是否考虑桥墩受风荷载作用对轨道梁位移响应的影响较大,差异值可达20%,桥墩高度与轨道梁位移不是单一线性关系,存在一个临界桥墩高度值,小于临界值时桥墩高度与轨道梁位移呈正相关,大于临界值时呈负相关。In this paper,a vehicle-bridge lateral dynamic analysis model considering the pier body vibration was established based on the principles of vehicle dynamics,structural dynamics and PD control algorithm,studying the lateral coupling vibration of medium-speed maglev with the participation of the bridge piers.The analysis of lateral coupling vibration of medium-speed maglev system is based on the programming of Mathematica software,and the influence rule of different pier heights on system vibration is studied.The results of the study suggest that the wind load is the main excitation source of lateral coupling vibration of medium-speed maglev system.The influence of wind load on the pier has limited influence on the dynamic response of the vehicle system,and the change of the height of the pier has little impact on the dynamic response of the vehicle system.The wind load on the pier has a great influence on the displacement response of the rail beam with 20%difference value.The height of the pier and the displacement of the rail beam are not a single linear relationship,while there is a critical pier height value,which is less than the critical value.The pier height is positively correlated with the displacement of the rail beam,more than the critical value,which is negatively correlated.

关 键 词：中速磁浮 轨道梁 桥墩 横向耦合振动 

分 类 号：U237[交通运输工程—道路与铁道工程]