容量约束下网络交通流演化

The Evolution of Network Traffic Flow under Capacity Constraints

运用微观经济学市场摸索过程刻画拥挤状态下出行者出行路线选择行为,在出行市场背景下,描述了网络交通流由非均衡流模式向均衡流模式的演化过程。在此基础上,引入路径流约束条件,建立了容量约束下的网络交通流从非均衡向均衡流模式演化的动态模型。并以一个简单的测试网络为例,分固定需求和弹性需求两种情况对文中演化模型进行了模拟,并获得了满意结果。

This paper characterizes the travelers＇ route choice behavior under crowded state by microeconomics market exploration process. Under the background of travel market, it also descrihes the evolution of the network traffic from a non-equilibrium mode to an equilibrium flow mode. Based on these, it introduces the path flow constraints, and establishes a dynamic Model of network traffic flow evolution from a non-equilibrium flow mode to an equilibrium flow mode under capacity constraints. Finally, it takes a simple test network for example, simulates the evolution model of this paper in both cases of fixed demand and elastic demand, and obtaines satisfactory results.