线路关键点对400km/h高速铁路纵断面参数设计影响  

The Influence of Line Key Points on Vertical Parameters Design of 400 km/h High-speed Railway

作　　者：何庆[1] 徐双婷 高天赐[1] 胡建平[2] 朱颖 王平[1] HE Qing;XU Shuangting;GAO Tianci;HU Jianping;ZHU Ying;WANG Ping(MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;China Railway Eryuan Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China;China Railway Corporation Limited,Beijing 100039,China)

机构地区：[1]西南交通大学高速铁路线路工程教育部重点实验室,成都610031 [2]中铁二院工程集团有限责任公司,成都610031 [3]中国中铁股份有限公司,北京100039

出　　处：《铁道工程学报》2022年第11期25-32,共8页Journal of Railway Engineering Society

基　　金：国家自然科学基金项目(51878576);高铁联合基金重点项目(U1934214)。

摘　　要：研究目的:400 km/h等级高速铁路的规划设计是我国现阶段高速铁路建设与发展的重要目标。目前,尚未有400 km/h高速铁路纵断面参数设计标准的研究。在满足高速列车行驶安全与旅客乘坐舒适条件下,本文对400 km/h等级高速铁路纵断面参数进行了设计与验证,为后续工程应用提供理论依据。研究结论:(1)相同坡度差、夹直线长度条件下,列车垂向振动加速度最大值随竖曲线半径的增加而减小,建议400 km/h高速铁路最小竖曲线半径取值为30000 m;(2)当竖曲线半径≥20000 m,车体垂向振动加速度最大值数值受坡度差值影响很小;(3)车体垂向振动加速度随着夹直线长度的增加而逐渐消散,叠加振动减小,建议400 km/h高速铁路夹直线长度最小取值为200 m;(4)本文研究可为400 km/h高速铁路纵断面参数设计提供技术支撑。Research purposes:The planning and design of 400 km/h high-speed railway is an important goal for the construction and development of high-speed railway in China.Currently,there has been no study on the design standard of 400 km/h high-speed railway vertical parameters.Under the condition of driving safety and passenger comfort in high-speed train,this paper designs and verifies the vertical parameters of 400 km/h high-speed railway,so as to provide a theoretical basis for subsequent engineering application.Research conclusions:(1)Under the conditions of same algebraic difference between adjacent gradients and length of tangent between curves,the maximum train vertical vibration acceleration value decreases with the increase of the vertical curve radius.The minimum vertical curve radius of 400 km/h high-speed railway is recommended to be 30000 m.(2)When the vertical curve radius is greater than or equal to 20000 m,the maximum value of the vertical vibration acceleration of the train body is little affected by the algebraic difference between adjacent gradients.(3)The vertical vibration acceleration of the car body gradually dissipates as the length of tangent between curves increases,and the superimposed vibration decreases.It is recommended that the minimum length of 400 km/h high-speed railway is 200 m.(4)This research method can provide technical support for the vertical parameters design of 400 km/h high-speed railway.

关 键 词：400km/h高速铁路 纵断面参数设计 线路关键点 动力学仿真 

分 类 号：U212.31[交通运输工程—道路与铁道工程]