城市道路交通网络级联失效的灾害蔓延动力学模型研究

发布时间：2018-04-05 01:24

  本文选题：复杂网络　切入点：级联失效　出处：《长沙理工大学》2014年硕士论文

【摘要】：城市道路交通网络系统是城市运输系统的中的基础组成部分,作为基本的构件之一承载着人类的社会经济活动。但是随着社会经济的高速发展,城市道路上交通拥堵问题越来越严重,城市道路交通网络中个别结点的失效可能引起大规模的交通瘫痪,即城市道路交通网络上存在级联失效,拥堵可能会在整个交通网络上蔓延,城市道路交通网络呈现出脆弱性。因此,研究城市道路交通网络上的灾害蔓延的动力学模型具有重要的意义。本文首先对国内外的城市道路交通复杂网络理论、级联失效及其内涵研究现状进行了总结,分析了城市道路交通网络特性,并且考虑城市道路交通网络是一种混合网络构建了城市道路交通双层网络模型。其次,构建了动态最短路径模型,提出了基于遗传算法的最短路径搜索并设计了算法步骤。再次,考虑结点的自修复功能和灾害蔓延机制,构建城市道路交通网络上的灾害蔓延动力学模型,基于灾害蔓延动力学模型分析了城市道路交通网络中结点失效结点连接强度、结点度、及自修复因子的相关性。最后,设计了一个算例对模型进行模拟试验,模拟试验表明了结点自修复能力和延迟时间因子对灾害蔓延有重要影响,所建立的模型能够有效的模拟城市道路交通网络的灾害演化动力学行为。最后就论文的不足以及研究的展望进行了简要的讨论。
[Abstract]:City road traffic network system is the basis of city transportation system in part, as one of the basic components of carrying the social economic activities of human beings. But with the rapid development of social economy, the city traffic congestion on the road more and more serious, the failure of city road network of individual nodes may cause massive traffic paralysis. The city road traffic congestion exists on the network cascading failure, may spread in the traffic network, city road traffic network presents the vulnerability. Therefore, plays an important role in dynamic model of road traffic network of city disaster spreading. Based on the domestic and foreign city road traffic complex network theory, and cascading failure the connotation of research are summarized, analyzed the characteristics of city road network, and consider the city traffic network is a Hybrid network to construct the city road traffic double network model. Secondly, construct dynamic shortest path model is proposed to search the shortest path based on genetic algorithm and design steps of the algorithm. Thirdly, considering the self repairing function and disaster spreading mechanism node, construction of city road network on the spread of the disaster disaster dynamics model. Spread dynamics model to analyze the city road traffic network node failure node connection strength, node degree, and based on the correlation between self repair factor. Finally, an example is designed to simulate the test, simulation results show that the self repairing ability of nodes and the delay time of disaster spreading factor has an important influence, the the model can simulate the city road traffic network effective disaster evolution dynamics. Finally the lack and future of this paper is to discuss. Theory.

【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491
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本文编号：1712599