高速及超高速磁悬浮线路平面设计参数研究

Study on Planar Design Parameters for High-speed and Ultra-high-speed Maglev Lines

超高速磁悬浮作为一种新兴的交通工具,正在逐步从理论研究向试验验证阶段发展。本文从磁悬浮轨道交通的原理和特点等方面出发,对比分析了高速磁悬浮和超高速磁悬浮交通的制式差异和线路平面参数取值差异,并且用动力学仿真手段对其进行了验证。首先,从高速磁悬浮现行规范和超高速磁悬浮研究资料出发,分析了最小曲线半径和最小缓和曲线长度的影响因素和计算方法,得到不同速度下的平面参数取值;随后,运用车辆-线路系统动力学仿真手段计算了动力学指标与曲线半径和缓和曲线长度的关系。研究结果表明:超高速磁悬浮设计速度为1000 km/h时,最小圆曲线半径取18800 m、最小缓和曲线长度取1340 m较为合理。

Ultra-high-speed maglev,an emerging transportation technology,is transitioning from the realm of theoretical research into the stage of experimental validation.This paper started by outlining the foundational principles and distinguishing features of maglev rail transit,then compared the distinctions in system architecture and the values of horizontal alignment parameters between high-speed maglev and ultra-high-speed maglev systems,and verified these comparisons and distinctions by employing dynamic simulation analysis.Firstly,this study reviewed current specifications and research materials related to ultra-high-speed maglev technology,and analyzed the factors influencing and the methods for calculating the minimum curve radius and the minimum transition curve length for high-speed maglev systems,to obtain the parameter values at different speeds.Following this,the study employed dynamic simulation tools for vehicletrack systems to evaluate the relationship between dynamic performance indicators and both the curve radius and the transition curve lengths.The findings indicate that for ultra-high-speed maglev systems designed to operate at speeds of 1000 km/h,a minimum circular curve radius of 18800 m and a minimum transition curve length of 1340 m are considered to be practical and reasonable.