不确定条件下分组列车在编成站的集结参数研究  

Research on the Accumulation Parameter of Multi-section Train in Formation Station under the Conditions of Uncertainty

作　　者：陈崇双[1] 王慈光[1] 杨运贵[2] 薛锋[1] 

机构地区：[1]西南交通大学交通运输与物流学院,四川成都610031 [2]中国民航飞行学院空中交通管理学院,四川广汉618307

出　　处：《铁道学报》2011年第5期1-7,共7页Journal of the China Railway Society

摘　　要：分组列车与单组列车是我国铁路车流组织的两种形式,对其编组方案综合优化需要的集结参数研究具有理论和现实意义。车组重量不固定的分组列车在编成站的集结消耗与单组列车相同,而车组重量固定的分组列车的集结消耗包含固有和附加两类。根据集结的动态特性和车组到达的不确定性,将到达车组的车辆数和到达间隔时间都视为随机变量,在合理假定其分布的基础上,应用随机过程理论,并考虑改编作业当量因素,构建固定车组重量分组列车的集结参数模型。针对该模型的特点,应用离散事件系统仿真方法进行模拟。结果表明:模型的最大相对误差为3.72%;当两去向的车流到达强度与固定车组重量成比例时,分组列车的集结耗费最小。Abstract. The multi-section train and one-section train （single group train） are the two important modes of railcar flow organization in our country, so the research on the accumulation parameter needed for comprehensive optimization of their train formation plans（TFPs） has both theoretical and practical significance. In a formation station, the total aggregation cost of the multi-section train with non-fixed weight is the same with that of the one-section train, however, the total aggregation cost of the multi-section train with fixed weight contains the inherent and additional aggregation costs. According to the uncertainty of wagon-unit arrival and the dynamic characteristics of the aggregation process, both the number and interval time of the wagon-unit were considered as random variables, and their distributions were reasonably assumed. Meantime, applying the random process theory and importing the concept of the equivalent working load for break-up and make-up operations, the model of the accumulation parameter of the multi-section train with fixed weight was constructed. The characteristics of the model were simulated with the discrete event system simulation （DESS） method. The emulational results show that the maximum relative deviation of the model is 3.72% and the total aggregation cost per train gets minimum when the arriving intensity of wagon flows in two directions is in proportion to the fixed weight of the corresponding section.

关 键 词：分组列车 集结参数 不确定性 随机过程 离散事件系统仿真 

分 类 号：U292.5[交通运输工程—交通运输规划与管理]