摘要:研究目的：随着城市轨道交通网络规模的扩大和换乘客流的持续增加，对轨道交通运营的要求不断提 高。在有限的轨道交通供给条件下，采用城市轨道交通共线运营模式，是实现线路间资源共享、满足客流出行 需求的重要方式。针对共线运营模式下城市轨道交通开行方案，本文从网络共线运营的特征出发，结合影响 因素，考虑列车能力限制、区间通过能力、车辆配置数、列车满载率等约束条件，研究何种开行方案既能更好地 满足客流出行需求，又能使轨道交通运营企业成本最低，从而实现社会效益和经济效益的最大化。研究结论:( 1) Y形线路是共线运营组织形式中最常见的一种形式，依据网络拓扑结构，可分为3种运营 组织形式，每种模式均有各自的优缺点和适应性，客流量、折返线、列车编组是其重要的影响因素；（2) Y形线 路共线运营组织方案的优化中，应整合各个车站的能力、各条线路的通过能力以及折返站的折返能力，根据客 流变化特征，选择合理的开行间隔时间方案，制定其合理的运营组织交路，并对其中的各自单线进行优化； ( 3) 开行方案 运营 本和乘客等 间 本， 总 本 ;( 4) 采用 线和 线的运营交路形式，耗费总成本更低;（5)本研究可应用于城市轨道交通列车运营方案的优化。

Abstract:Researchpurposes: With theexpansion of network scale and constant growth of transfer passengers，the requirement of urban transit ’ s operation is ever increasing. Under the condition of limited rail transit resource，it ’ s a key method to use collinear operating mode to realize resource sharingand satisfy thetrip demand of passengers. According to the operation scheme in collinear operation mode，witli the comprehensive consideration of train ’ s carrying capacity， section carrying capacity， number of trains， loading percentage of trains and otiier constraints， this paper started from the point of collinear operation mode ’ s features，concentrated on the operation scheme which can not only meet the trip demand of passengers，bus also can minimize the operating cost of rail transit，so as to maximize the social and economic benefits. Research conclusions ：( 1 ) Y - shaped route is the most common form in collinear operation mode， which can be divided into three kinds by network topology. Each mode has its own advantages and disadvantages as well as adaptability，and they ’ re all influenced remarkably by passenger flow，turn - back line and train formation. (2) In the optimization of Y - shaped collinear operation organization scheme，different capacity of stations and routes，especially the turn - back capacity of turn - back station should be taken into consideration integratedly. According to the change characteristics of passenger flow，a corresponding time scheme should be selected and a rational route system should be made$besides$ single rail lines should be optimized individually. (3) Both the operating cost and the time cost of passengers should be considered in the operating scheme of trains to minimize the total cost. (4) The nesting of trunk line and branches can decrease the total cost effectively. (5) This paper can be applied in the optimization of the operation scheme of urban rail transit.