市域(郊)铁路出入线接轨站咽喉通过能力计算研究

Study on Throat Area Carrying Capacity Calculation of Urban(Suburban)Railway Entrance and Exit Line Junction Stations

市域(郊)铁路出入线接轨站咽喉区各类作业进路交叉较多,对咽喉通过能力影响较大。目前,尚未提出针对该类型车站咽喉通过能力的计算公式,因此,有必要对此开展研究。通过对市域(郊)铁路出入线接轨站作业类型和特点进行深入分析,并与其他类型铁路车站咽喉通过能力的计算公式进行对比,提出适用于该类型车站咽喉通过能力的计算公式,并利用最大概率进路优化法和坐标计算法进一步完善了该类型车站咽喉通过能力的全过程计算方法。同时,以上海东站市域场为应用实例,对计算方法进行进一步验证分析,计算过程充分考虑了车站运营特点,结果较为准确地反映出咽喉实际通过能力,从而为实际运营合理地使用线路运输能力、有计划地安排运输组织方案,起到指导作用。

There are many crossings of various operational approaches in the throat area of urban(suburban)railway entrance and exit line junction stations,significantly impacting the throat area carrying capacity.At present,no formula has been proposed for calculating the throat area carrying capacity of this type of station.Therefore,it is essential to conduct research in this area.By conducting a thorough analysis of the operational types and characteristics of urban(suburban)railway entrance and exit line junction stations and comparing them with the throat area carrying capacity calculation formulas for other types of railway stations,the paper proposed a calculation formula applicable to the throat area carrying capacity of this station type.Furthermore,the implementation of the maximum probability approach optimization method and the coordinate calculation method further enhanced the whole process calculation method of the throat area carrying capacity of this station type.At the same time,using the urban yard at Shanghaidong Railway Station as an illustrative case,the study performed further verification and analysis of the calculation method.The calculation process comprehensively incorporates the station’s operational characteristics,and the results precisely reflect the actual throat carrying capacity.Consequently,the study offers valuable guidance for the rational use of line transportation capacity and the strategic planning of transportation organization for real-world operations.