市域铁路信号系统对折返线长度的要求探讨

市域铁路将进入大规模的建设阶段,其折返线及安全距离长度涉及车站规模,影响土建投资,而现行规范尚未有明确规定。通过分析城市轨道交通折返线及安全距离长度的相关要求,结合市域铁路自身特点,基于安全制动模型,分析信号系统安全制动的关键因素,建立市域铁路折返线及安全距离长度计算的简单方法,并进行了典型分析,研究结果对指导工程设计及节省工程投资具有积极意义。

A Brief Analysis on the Requirement of the Length of Turn-back Line in Suburban Railway signal System

Regional railway will be constructed on a large scale in the near future,but there is no explicit stipulation in current standard codes about regional railway turn-back track's length and safety distance's length,which have influence on station scale and civil engineering cost. To solve that problem,this paper analyzed the relevant requirements about the lengths of turn-back track and safety distance of the urban rail transit firstly; and then,combined with the special characteristics of regional railway,based on safety braking mode,this paper researched the key factors for safety braking of signal system. Finally,this paper proposed a simple method for calculating the lengths of turn-back track and safety distance of regional railway,followed by typical analysis. The result of this research can play a positive role for guiding project design and saving project investment.