基于安全区段的站后双折返线折返能力分析

Capacity Analysis of Station-behind Double Turn-back Line with Overlap

针对站后双折返线,考虑接车进路的安全区段,分别对安全区段延伸到正线和道岔两种情况的折返过程进行分析,并建立折返出发间隔的解析计算公式。以天津江湾二支路站与DKZ4型列车作为算例,计算、分析不同情况下的车站折返能力。研究结果表明:在江湾二支路站,安全区段需要延伸到道岔,靠近出发正线的折返线能力比靠近进站正线的折返线大7列/h;在增设绝缘节后,使安全区段延伸到正线,两折返线能力分别增加2.48列/h和9.5列/h。

This paper took an account of overlap of arriving routes, analyzed the turn-back process of station-behind double turn-back line and the calculation formula of turnback departure interval was established. Taking Jiangwanerzhilu Station and DKZ4 trains as an example, accurate results of the turn-back capability calculated by train traction calculation were obtained. The results show that in Jiangwanerzhilu Station, the overlap need reach crossing and the capability of turn-back line which is close to departure main line is 7 more than the other line. Through setting insulation section, the overlap does not need reach crossing, then the capability of two turn-back lines increase by 2.45 and 9.5 respectively.