既有线开行27t轴重货物列车对线路通过能力的影响  

Influence of Freight Train with 27tAxle Load on the Carrying Capacity of Existing Lines

作　　者：王俊彪[1] 张岳松[1] 田长海[1] 姜昕良[1] 王京波[2] 

机构地区：[1]中国铁道科学研究院铁道科学技术研究发展中心,北京100081 [2]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《中国铁道科学》2014年第2期91-97,共7页China Railway Science

基　　金：铁道部科技研究开发计划项目(2012X009-B);中国铁道科学研究院行业服务技术创新项目(2012YJ036)

摘　　要：采取与23t轴重货物列车对比分析的方法,研究既有线四显示自动闭塞区段开行27t轴重货物列车对线路通过能力的影响。通过检算得到27t轴重货物列车的牵引重量、紧急和常用制动距离以及起停车附加时分,依据检算的制动距离和起停车附加时分等参数,按列车最高运行速度分别为80,90,100km·h-1分析计算客货列车共线情况下开行27t轴重货物列车对追踪间隔时间的影响。结果表明:27t轴重货物列车的调速制动距离既没有对构成检算追踪间隔时间的限制制动距离构成影响,也没有对既有闭塞分区长度构成影响,因此在既有线开行27t轴重货物列车对线路的通过能力基本没有影响;但当27t轴重货物列车的最高运行速度达到90km·h-1后,紧急制动距离超过800m限值。因此建议:进一步提高27t轴重车辆的制动性能;将1 050m系列到发线的列车重量提高到7 000t;核算牵引供电能力是否满足列车重量提高的要求。The aim of this study was on how freight train with 27 t axle load influenced the carrying capacity of the four-display automatic block section of existing lines.We made a comparison on the influences of axle loads of 27 t and 23 t.Considering such influencing factors as train tractive weight,emergency and service braking distances and additional time for stopping and accelerating trains,we calculated and checked the above-mentioned influencing factors and explored how the freight train with 27 t axle load influenced the train headways of passenger and freight mixed railway at the maximum speeds of 80,90 and 100 km· h-1 respectively.Results show that the speed-regulating brake distance of the freight train with 27 t axle load has neither any influence on the limited brake distance nor on the length of existing block section.Accordingly,the results provided by this study show that the carrying capacity of existing lines will not be influenced by the freight train with 27 t axle load.When the maximum running speed of the freight train with 27 t axle load is over 90 km · h-1,however,the emergency braking distance will exceed the limit of 800 m.Therefore,we suggest that,the braking performance of the freight train with 27 t axle load should be further improved; the train weight should be increased to 7 000 t on 1 050 m series arrival and departure track; further study should be conducted to check whether the traction power supply system meets the demands for increased weight of freight train.

关 键 词：既有线 轴重 追踪间隔时间 制动距离 线路通过能力 

分 类 号：U292.5[交通运输工程—交通运输规划与管理] U292.551[交通运输工程—道路与铁道工程]