复杂系统在城市交通网络中的应用

 面对日益严重的城市交通问题，分析和研究城市交通复杂网络的特性，对解决城市交通相关问题和合理规划城市布局具有十分重要的实际意义。本文首先介绍了复杂系统相关理论知识，包括复杂系统研究中常用的几种统计特性和不同拓扑结构下的复杂网络的发展历程；然后从交通流问题、不同拓扑结构对交通网络的影响、网络中心节点、级联失效现象和网络稳定性5个方面分析了复杂网络在城市交通系统中的应用；最后对复杂系统在城市交通网络中的未来研究方向和发展趋势进行了展望。

Complex system and its application in urban transportation network

In view of the increasingly serious urban traffic problems, it is of great significance analyzing and studying the characteristics of the complex urban transportation network to solve urban traffic problems and rationally plan the city layout. This paper firstly introduces the relevant theories of complex systems, including several statistical properties commonly used in the study of complex systems and the development of complex network based on different topologies. Then, the applications of complex network in the urban transportation system are elaborated by analyzing the traffic flow, the influence of different topologies on the transportation network, the network center node, the cascade failure phenomenon and the network stability, respectively. Finally, the future research direction and the development trend of the complex systems in the urban transportation network are pointed out.