重载铁路反向曲线区段行车安全分析

Analysis of Driving safety on reverse curve section for Heavy-haul Railway

重载铁路是国内外货运发展的主流方向,目前我国部分重载线路存在空、重载荷列车共行的单线铁路。本文基于某既有空、重载荷列车共行单线铁路实际运营条件,对共行线长大坡道上反向曲线区段空、重载荷列车条件下,行车安全性进行论证和分析,为工程应用提供理论支撑和安全评价。结果表明:在重载工况条件下,列车以100 km/h速度通过该长大坡道反向曲线,在空载工况时,列车应在该反向曲线区段限速80 km/h;通过对该反向曲线区段行车性能分析研究,在重载铁路新线设计中重车方向缓和曲线长度可采用《重载铁路设计规范》中相关规定,空车方向600 m小曲线半径连接缓和曲线长度建议:取值大于80 m。

Heavy-haul railway has been the mainstream direction of freight transport development at home and a-broad,and at present,some heavy-haul line in China have a single-line railway with empty and heavy train working conditions running together.This paper is based on the actual operation of an existing single line railway with com-mon running conditions for empty and heavy trains,demonstrates and analyzes the running performance of the work-ing conditions of empty and heavy trains under the reverse curve section of the common running line with long grades,to provide theoretical support and safety evaluation for the engineering application.The results show that:Under the heavy load conditions,the train can be loo km/h speed through the long ramp reverse curve,in the empty condition,The train should have a speed limit of 80 km/h in this reverse curve section;through the reverse curve sec-tion of the running performance analysis and research,in the design of heavy railway new line,the mitigating curve length of the heavy direction can be used in the design of heavy railway specification with the relevant provisions,the mitigating curve length of connecting with a small radius curve of 600 m in the direction of the empty vehicle is rec-ommended:take the value of more than 80 m.