基于调车系统的技术站编组去向方案优化  

Optimization of Block Plan for Technical Stations Based on Shunting System

作　　者：方波 魏玉光[1] FANG Bo;WEI Yuguang(School of Traffic and Transportation,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学交通运输学院,北京100044

出　　处：《铁道学报》2023年第10期9-20,共12页Journal of the China Railway Society

基　　金：中央高级基本科研业务费(2022JBQY006)。

摘　　要：优化编组去向方案是改善技术站系统分工、合理使用调车线的重要措施。针对传统单点列车编组计划模型将车站视为一个点从而忽视折角车流的不足,将双向编组站的上下行系统分别看作不同的点,提出基于调车系统的编组去向方案优化模型。区别于既有多点列车编组计划模型,根据编组去向的车流内容引入车流折角改编概率,并将编组去向的最小流量、车站的折角改编车流比例、不同编组去向的车流共用同一调车线等纳入模型约束中。在不降低解的质量下,基于Sigmoid函数拟合得到车流折角改编概率的近似计算公式,有效提高模型的求解效率。基于实际路网的算例结果表明,本文模型所得编组去向方案相较于既有模型更加符合运输实际。Optimizing the block plan is an important approach to improve the division of labor in the technical station system and rationalizing the utilization of classification tracks.In response to the shortcomings of the traditional single-point train formation plan model,which treats a station as a point and ignores the angular traffic flows,this study proposed a block plan optimization model for technical stations based on the shunting system by regarding the up and down systems of a bidirectional marshalling station as different points.Different from the existing multi-point train formation plan model,by introducing a double classification probability for the angular traffic flow according to the content of traffic flows in the block,this paper incorporated the minimum car flow limitation of a block,the proportion of angular traffic flows at each station,and the situation where the car flows of different blocks share the same classification track into the model constraints.Without reducing the quality of the solution,an approximate formula for the double classification probability of traffic flow was obtained based on the Sigmoid function,effectively improving the solving efficiency of the model.The results based on a real network show that the block plan obtained by this study is closer to the transportation reality than the existing models.

关 键 词：编组去向 折角车流 调车系统 SIGMOID函数 

分 类 号：U292.3[交通运输工程—交通运输规划与管理]