基于物理网络的客运专线网络承载能力研究

Passenger Dedicated Line Network Carrying Capacity Research Based on Physical Network

根据道路交通承载能力研究方法,提出综合考虑网络拥挤、服务水平、择路行为和能力约束等因素的客运专线路网承载能力的研究方法.在假设条件下使旅客可以直接分配到没有旅客列车的物理网上.将旅客的出行阻抗定义为包括出行票价、时间价值和拥挤价值的广义费用,服务水平定义为旅客的实际出行阻抗与最小阻抗之间的比值,在此基础上提出了基于物理网络的客运专线承载能力模型,并设计了包含两阶段算法的启发式算法进行求解;最后对给定的客运专线网络进行实例计算,验证了模型的可行性.

This paper proposes the method of passenger dedicated line network carrying capacity based on physical network. It takes into account the factors of network crowd degree, service level, path choice behavior and capacity restrains. On the basis of the assumptions, the passenger volume is directly distributed to the physical network without trains. The passenger＇ s travel impedance is defined as the generalized cost which contians ticket price, time value and congestion cost. The level of service is defined as the ratio of actual travel impedance and minimal travel impedance. The PDL network carrying capacity model based on physical network is proposed considering the passenger travel impedance and service level. A heuristic twostage algorithm is designed to solve the problem. Finally, a numerical example is conducted for a specified PDL network to verify the feasibility of the model.