重庆轨道交通白居寺车辆段段内发车能力研究

重庆轨道交通2号线是我国第一条跨座式单轨线路,2004年运营至今客流急剧增加,现状客流已达到远期设计客流,正线运营行车间隔已缩短至3min,从而对车辆段的出段能力提出了更高的要求。车辆段出段能力的主控制因素是段内发车能力,对白居寺车辆段段内发车能力的研究不仅能提升该车辆段的出段能力,而且对提升2号线的运营效率和降低运营成本具有重要意义,也可供其他地铁车辆段设计借鉴和参考。对白居寺车辆段出段能力的控制因素进行分析,明确影响车辆段出段能力的主控因素为段内区段时间(咽喉区通过能力);对段内区段时间进行计算分析和现场实测,验证确定方案的合理性和适应性。研究表明,段内区段运行时间为车辆段出段能力的主控因素。为提高车辆段出段效率,车辆段咽喉区线路设计应具备平行发车进路的条件。当车辆段出段能力不满足正线行车间隔要求时,可通过增加调车信号机来分段办理调车进路,提高列车出段效率,从而达到与正线列车运行间隔相匹配、缩短出段时间和延长夜间维修作业时间的目的。

Capacity Analysis of Entrance/Exit Line from Bajusi Depot of Chongqing Rail Transit

Chongqing rail transit line No.2 is the first straddle-type monorail line in China. Since it began operation in 2004, the passenger flow has reached the level of long-term design passenger flow, and the operating interval of the main line has been reduced to 3 min. Therefore, a higher capacity depot access line is necessary. In this regard, the research on the Bajusi depot capacity is anticipated to considerably influence the strategies to be implemented for improving its capacity and operational efficiency. Further, the investigation identifies schemes that can effectively reduce the cost of the metro. Accordingly, this study may be used as a reference for the design of other metro depots. In the analysis of the controlling factors of the Bajusi depot, the capacity of the throat area is clearly identified as the main controlling factor. The rationality and adaptability of the scheme are confirmed through field test as well as the calculation and analysis of the capacity of the access section. The throat area capacity is the main factor that controls the entrance and exit. To ensure a more balanced depot load, the line design in the throat area of the depot should satisfy the parallel departure route requirement. When the entrance and exit ability of the depot does not satisfy the requirements of the normal line interval, the shunting route can be managed by introducing a shunting signal machine. To improve departure efficiency, the departure time can be shortened, and the maintenance time can be extended at night.