研究目的:《计算机联锁技术条件》(TB/T 3027-2002)规定:进站信号机外方制动距离内换算坡超过 6‰下坡道的车站，须在接车进路末端设置延续进路。当接车进路末端设有安全线或隔开设备时，延续进路开向安全线或隔开设备;当接车进路未端无安全线或隔开设备时，延续进路开向正线。我国高速铁路目前有部分车站在进站信号机外、制动距离内换算坡超过6‰下坡，按照规定，须在接车进路末端设置延续进路。设置延续进路，对高速铁路车站通过能力有较大影响，因此有必要研究各种情况下车站的通过能力。本文系统分析计算了各种情况下延续进路对车站到到间隔、到通间隔、到发间隔、发到间隔的影响。
研究结论:(1)延续进路讨高速铁路车站通过能力影响较大，车站到达间隔将增加2.3 min以上，车站到通间隔也增加2.3 min以上;(2)设置安全线并不能很好地解决问题，高速铁路设置安全线不必要;(3)该研究成果对于高速铁路车站设计、能力计算具有参考价值。
Research purposes: As stipulated in‘Computer Interlocking System Technical Conditions(TB/T 3027- 2002)，a successive route should be provided at the end of vehicle access route for the station with a down grade of 6‰ converted within the braking distance outside the home signal. When there is catch siding or separation facility at the end of an access route，the successive route should be set towards and linked to the siding or the facility; If there is not， to the main track instead. In China, there are some stations with a down grade of 6‰ converted within the braking distance outside the home signal. According to the regulations，the successive route should be provided. As successive routes would have great impacts on the passing capacity of high-speed railway stations，the study about the passing capacity is necessary. This article makes a system analysis on the impacts，which may be caused by providing successive access routes on high-speed railways，upon the arrival-arrival interval，arrival-running through interval，arrival-departure interval and arrival-departure interval of stations.
Research conclusions:(1)Based on the studies，successive routes would have great impacts on the passing capacity of high-speed railway stations and the arrival intervals at stations increase by more than 2.3 min and so do the arrival-running through intervals.(2)Setting catch sidings concurrently is not an effective solution either, so setting catch sidings is not necessary.(3)The research results have a reference for the stations design and the passing capacity analysis of high-speed railway.
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