摘要
[目的]内嵌式中低速磁浮系统作为一种新型的轨道交通制式,其车辆及轨道系统依靠非接触式支撑运行,且车辆走行机构内嵌于轨道梁内,因此需针对其车线匹配原理、车辆和轨道梁结构特点,研究线路平面最小曲线半径取值,以支撑工程设计。[方法]介绍了内嵌式中低速磁浮系统的特点;介绍了平面最小曲线半径取值的基本原理;基于车辆行驶动力学理论,分析了内嵌式中低速磁浮线路的旅客舒适度标准及平面最小曲线半径取值。[结果及结论]在列车运行速度一定的情况下,平面最小曲线半径主要取决于横坡角允许值和未被平衡离心加速度允许值。在参考国内外其他轨道交通制式的试验结果、相关标准规定、传统中低速磁浮系统实际建设运营情况的基础上,建议最大横坡角不大于8°,最大未被平衡离心加速度在一般和困难情况下分别不大于0.4 m/s^(2)和0.6 m/s^(2)。当内嵌式中低速磁浮系统设计速度为200 km/h时,线路平面最小曲线半径一般和困难情况下分别可取为1800 m和1600 m。
[Objective]As a new type of rail transit,the embedded medium-low speed maglev system relies on non-contact support for vehicle and track systems,and the vehicle running mechanism is embedded within the track beam.Therefore,it is crucial to study the values of the minimum curve radius in the planar layout,considering the vehicle-track matching principles and the structural characteristics of both vehicle and track beam,to support engineering design.[Method]The characteristics of embedded medium-low speed maglev systems are introduced,together with the basic principles for determining the values of the planar minimum curve radius.Based on the theory of vehicle ride dynamics,passenger comfort standards and the determination of planar minimum curve radius for embedded medium-low speed maglev lines are analyzed.[Result&Conclusion]Under a constant train operating speed,the planar minimum curve radius mainly depends on the allowable values of the transverse slope angle and the unbalanced centrifugal acceleration.Referring to the test results of other rail transit systems,relevant standards,and the actual construction and operation of conventional medium-low speed maglev systems worldwide,it is suggested that the maximum transverse slope angle should not exceed 8°,and the maximum unbalanced centrifugal acceleration should be no more than 0.4 m/s 2 in general and 0.6 m/s 2 under challenging conditions.For an embedded medium-low speed maglev system designed with a speed of 200 km/h,the recommended values for the planar minimum curve radius are generally 1800 m and 1600 m under normal and challenging conditions,respectively.
作者
姜梅
寇峻瑜
汪洋
JIANG Mei;KOU Junyu;WANG Yang(China Railway Eryuan Engineering Group Co.,Ltd.,610031,Chengdu,China;Sichuan Development Chengdu Xinzhu Road&Bridge Machinery Co.,Ltd.,611430,Chengdu,China)
出处
《城市轨道交通研究》
北大核心
2024年第2期147-152,共6页
Urban Mass Transit
关键词
内嵌式中低速磁浮
线路
平面最小曲线半径
embedded medium-low speed maglev
line
planar minimum curve radius
