基于CBTC的灯泡线线路拓扑结构分析与设计

Analysis and Design of Topological Structure of Bulb Line Based on CBTC

分析灯泡线对既有CBTC系统线路拓扑结构下链接关系的影响,提供一种基于轨道交通灯泡线线路的系统设计方法,并给出描述线路拓扑的数据结构定义。系统设计方法核心思想是:在CBTC系统中,将灯泡线中的拐点作为一个链接对象。通过对拐点两侧的区段链接关系进行描述和确定,对于存在灯泡线的线路,根据列车运行方向,实现对含拐点线路的路径搜索,并对包络跨在拐点上的列车进行包络位置计算,对列车运行方向与信号机、车档等方向的一致性判断给出具体方法。通过使用这种方法,使得既有CBTC系统少量修改拓扑结构,就能支持灯泡线线路。

This study analyzes the influence of the bulb line on the link in the existing communications-based train control(CBTC)system line topology.It provides a system design method based on the bulb line for the rail transit and a data structure definition of the line topology.The key to the system design method is to regard the inflection point of the light bulb in the CBTC system line as a link object.Through the description and definition of block link relations on both sides of the inflection point,an path search approach for lines with inflection points according to the train direction is proposed.Moreover,a specific method for calculating the envelope position of the train crossing the inflection point and judging the consistency of the running direction of the train with the direction of the signal and stopblock is proposed.