基于双层网络模型的公交网络通行能力和级联故障研究

发布时间：2018-03-15 05:23

本文选题：复杂网络　切入点：双层网络模型　出处：《浙江工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：城市公共交通是城市交通运输系统的重要组成部分,随着城市化进程的不断推进以及人口的不断增加,城市公共交通的发展与城市居民日益增加的交通需求之间的矛盾日益突出,这些交通问题也严重影响了城市的经济建设和城市的运行效率。本文基于复杂网络理论,对城市公交网络进行了深入地研究。通过构建城市公交网络的双层网络模型,进一步研究了发生在城市公交网络上的级联故障和通行能力的提高策略,其目的是在双层公交网路模型的基础上研究城市公交网络上的动力学行为,以提高城市公交网络的网络效率和运行能力。本文的主要工作和成果如下： 1.本文提出了城市公交网络的双层网络模型的构建方法,城市公交网络可以投射到Space P和Space L空间上。把Space P网络作为上层逻辑层网络,Space L网络作为下层物理层网络,这样我们就得到了由Space P和Space L网络组成的城市公交网络的双层网络模型。城市公交网络的双层网络模型是研究城市公交网络的级联故障和提高整个城市公交网络的通行能力的重要前提,是进行下一步深层次研究的基础。 2.本文研究了双层网络模型中城市公交网络中的网络通行能力提高的策略,在这一模型中,通过移除逻辑层网络中的部分连边可以有效地提高网络的通行能力。通过对北京、上海和杭州的城市公交网络仿真发现,通过连边移除策略可以改变逻辑层网络的网络结构,从而有效提高网络的通行能力,这对我们未来改善网络的运行能力有很大的帮助。 3.为了研究双层城市公交网络模型上的级联故障过程,本文对双层模型分别采取了节点移除策略和连边移除策略。通过对中国三大城市北京、上海和杭州的城市公交网络的仿真发现,适当的增大网络的容量系数可以降低网络的级联故障规模。同时本文提出了城市公交网络防御级联故障的策略,有助于增强网络鲁棒性保证城市公交网络的正常运行。
[Abstract]:Urban public transportation is an important part of urban transportation system. With the development of urbanization and the increasing of population, The contradiction between the development of urban public transport and the increasing traffic demand of urban residents is increasingly prominent. These traffic problems have also seriously affected the economic construction of the city and the efficiency of urban operation. Based on the complex network theory, this paper makes a deep research on the urban public transport network. In this paper, the cascading faults and the strategies of improving traffic capacity in urban public transport network are further studied. The purpose of this paper is to study the dynamic behavior of urban public transport network based on the two-layer bus network model. In order to improve the network efficiency and operational capability of urban public transport network. The main work and results of this paper are as follows:. 1. In this paper, a two-layer network model of urban public transport network is proposed, which can be projected to Space P and Space L spaces. The Space P network is regarded as the upper logical layer network and Space L network is regarded as the lower layer physical layer network. In this way, we get the double-layer network model of urban public transport network, which is composed of Space P and Space L network. The double-layer network model of urban public transport network is to study the cascade failure of urban public transit network and to improve the whole city public transit network. The important premise of the capacity of the network, It is the foundation of further research. 2. In this paper, we study the strategy of improving the network capacity in the double-layer network model. In this model, we can effectively improve the network capacity by removing some connected edges from the logical layer network. The simulation of urban public transport network in Shanghai and Hangzhou shows that the network structure of logic layer network can be changed by the strategy of continuous edge removal, and the network capacity can be improved effectively, which is of great help to us to improve the running capacity of the network in the future. 3. In order to study the cascade fault process on the double-layer urban public transport network model, this paper adopts node removal strategy and continuous edge removal strategy for the double-layer model. The simulation of urban public transport network in Shanghai and Hangzhou shows that properly increasing the capacity coefficient of the network can reduce the scale of the cascade fault of the network. At the same time, this paper puts forward the strategy of preventing the cascade fault of the urban public transport network. It helps to enhance the robustness of the network to ensure the normal operation of the urban public transport network.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.17;O157.5

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