既有长沙磁浮线路桥梁结构提速适用性研究  

Study on the speed-increasing adaptation of the bridge structures in the existing maglev lines in Changsha

作　　者：梁潇 戴小冬 谭超 龙海滨 梁玉 陈峰 LIANG Xiao;DAI Xiaodong;TAN Chao;LONG Haibin;LIANG Yu;CHEN Feng(Department of Civil Engineering,Changsha University of Science & Technology,Changsha 410114,China;Hunan Maglev Technology Research Center Co.,Ltd,Changsha 410000,China;Hunan Provincial Communications Planning,Survey & Design Institude Co.,Ltd,Changsha 410008,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114 [2]湖南磁浮技术研究中心有限公司,湖南长沙410000 [3]湖南省交通规划勘察设计院有限公司,湖南长沙410008

出　　处：《铁道科学与工程学报》2019年第6期1493-1498,共6页Journal of Railway Science and Engineering

基　　金：湖南省战略性新兴产业与新型工业化专项基金资助项目

摘　　要：以长沙磁浮快线为代表的中低速磁浮交通系统的设计最高速度均为100km/h,为增强中低速磁浮交通系统在运行速度上的适用性,以长沙磁浮快线25m跨径单线简支梁为研究对象,采用成熟的磁浮车辆动力学模型,建立考虑轨道不平顺和多列车辆编组的车-桥耦合系统模型,应用数值仿真模拟技术对研究对象进行提速仿真分析。分析结果表明:车辆时速由100km/h提升至160km/h后,既有长沙磁浮快线25m跨径单线简支梁仍能满足列车运营的要求。The design of medium and low speed maglev transportation system represented by Changsha Maglev Express Line has the highest speed of 100 km/h.In order to enhance the adaptation of medium and low speed maglev traffic system in operation speed,in this paper,the 25 m-span single-track simply supported girder of Changsha Maglev Express Line was taken as the research object,and the vehicle-bridge coupling system model considering track irregularity and multi-train formation was established by using the mature maglev vehicle dynamics model.The numerical simulation technology was used to simulate and analyze the speed-up phenomenon of the research object.The results show that when the vehicle speed is increased from 100 km/h to 160 km/h,the existing 25 m-span single-track simply supported beam of Changsha Maglev Express Line can still meet the requirements of train operation.

关 键 词：中低速磁浮 桥梁结构 提速适用性 车-桥耦合动力学 

分 类 号：U237[交通运输工程—道路与铁道工程]