摘要
现有路网中是否建设新的地铁线路是一个重要的投资决策问题。本文研究弹性需求下多方式交通网络中地铁线路的投资决策问题。假定路网中的出行者可选择小汽车方式、步行换地铁方式或小汽车换地铁方式出行。将交通系统中交通规划管理者和用户的相互作用描述为离散双层规划模型,其中上层模型中交通规划管理者决定是否新建地铁线路以使得总社会福利最大,下层模型描述网络用户的旅行选择行为,包括出行路径,停车(换乘)设施和出行方式选择行为。设计了基于分枝定界法的算法求解该模型。最后,以一个算例说明模型和算法的应用。结果表明,不同的投资方案将明显影响出行者的旅行选择行为和网络性能。
Whether a new metro line should be built is an important investment decision problem. This paper studies the metro line design problem in a multi-modal network with elastic demand. Suppose that there are three alternative travel modes, namely car, walk-metro and car-metro. The interaction between the traffic plan- ner and manger and the network users can be formulated as a bi-level hierarchical problem. The upper level aims to maximize the total social welfare by determining whether to construct a new metro line, while the lower level is a user equilibrium model that considers the choices of users on travel routes, parking facilities and travel modes. A branch-an＆bound method is developed to solve the proposed model. A numerical example is used to illustrate the application of the proposed model and solution algorithm. The numerical results show that the different investment schemes will significantly influence the travelers＂ choice behavior and the performance of the network.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2008年第4期6-10,共5页
Journal of the China Railway Society
基金
国家自然科学基金项目(70701010)
中国博士后科学基金资助项目(20060400573)
关键词
多方式网络
地铁线路规划
网络均衡
双层规划
弹性需求
multi-modal network
metro line design
network equilibrium
bi-level programming model
elastic demand
