400 km/h高速铁路平竖重合地段线路方案动力学评估-《高速铁路技术》

文章信息/Info

Title:: Dynamic Evaluation of Railway Alignment in Horizontal and Vertical Overlapping Section of 400 km/h High-speed Railway

Author(s):: XIE Yi; SHI Jin; LIN Xiaolong; YU Haowei; 1. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China;
2. Beijing Jiaotong University, Beijing 100044, China

Keywords:: 400 km/h high-speed railway|dynamic simulation|line parameters|horizontal and vertical overlapping

摘要:: 文章针对我国新建沪渝蓉高速铁路重庆至成都段线路设计需求，建立中国标准动车组车辆-线路动力学分析模型，对项目某平竖重合段线路方案采用动力学方法进行评估及分析，研究表明：（1）在平曲线与竖曲线重叠设置时，设计速度400 km/h高速铁路最小平面曲线半径在一般和困难条件下宜分别取9 500 m和8 000 m；（2）设计速度400 km/h、曲线半径为8 200 m的平竖重合区段符合运行舒适性和行车安全控制标准；（3）各项动力学指标的频数统计可反映不同车速条件下轮轨作用的强弱程度；（4）基于动力学的PCT评价方法考虑了列车运行过程中车体跟随轨道面的不同步性，可较为客观地反映乘客的舒适性。

Abstract:: According to the railway line design requirements of Chongqing-Chengdu section of the newly-built Shanghai-Chongqing-Chengdu High-speed railway in China, this paper establishes the vehicle-line dynamic analysis model of China’s standard multiple units, and evaluates and analyzes the railway line scheme of a horizontal and vertical overlapping section of the project by dynamic method. The research shows that:(1) When the horizontal curve and vertical curve overlap, the minimum plane curve radius should be 9500 m and 8000 m respectively under general and difficult conditions. (2) The horizontal and vertical overlapping sections with a design speed of 400 km/h and a curve radius of 8200 m meet the control standards of running comfort and driving safety. (3) The frequency statistics of each dynamic index can reflect the strength of wheel-rail interaction under different vehicle speeds. (4) PCT evaluation method based on dynamics takes into account the asynchrony of the car body following the track surface during the train running, which can objectively reflect the passenger comfort.