市域铁路纵断面标准研究

Research on the Standard of Profile Optimization for Regional Railway

研究目的:市域铁路设计速度100~160 km/h,是快速、高密度、公交化的客运专线铁路。随着我国城市化进程的发展,对市域铁路建设的需求越来越大,但是已开通运营的市域铁路采用的标准规范均不统一。结合市域铁路特点,本文从区间正线最大坡度、长大坡道设置条件、相邻坡段连接、最小坡段长度几方面对市域铁路纵断面标准展开研究,以期为市域铁路项目设计及规范编制提供参考。研究结论:(1)区间正线最大坡度可以采用35‰;(2)相邻坡段坡度差大于或等于3‰时应设置竖曲线;(3)最小坡段长度不应小于200 m且相邻竖曲线不重叠;(4)本文确定的市域铁路纵断面标准较我国现行《城际规范》、《线规》、《地铁规范》规定的标准低;最大坡度与日本、法国、德国标准一致,设置竖曲线坡度差较法国、德国规定的标准低;(5)本研究成果对市域铁路线路纵断面标准确定及规范编制具有参考价值。

Research purposes： Regional railway designed speed of 100 - 160 km/h is a high- speed, high -density, mass transit type passenger dedicated line. With the development of urbanization in our country, the demand for regional railway construction in the city is more and more big; the standard of the running regional railway is not uniform. Combined with the characteristics of regional railway, regional railway profile standard should be researched from several aspects of main line interval maximum gradient, the conditions of long slope setting, the connection between adjacent grades, minimum length of grade, to provide a reference for regional railway project design and specifications. Research conclusions： （ 1 ） The main line maximum slope can be used in 35 per thousand. （2） Vertical curve should be set up when gradient difference between adjacent grades is greater than or equal to 3 per thousand. （3） Minimum length of grade should not be less than 200 m and the adjacent vertical curves do not overlap. （4） The standard of regional railway profile is lower than Code for Design of Intercity Railway, Code for Design of Railway Line, Code for Design of Metro; the standard of the maximum gradient is the same to Japan, France and German, the standard of gradient difference of vertical curve is lower than the French and German. （5）The research results could provide references for regional railway profile optimization standard and code compilation.