基于复杂网络理论的城市公交网络可靠性研究  

Study on Reliability of Urban Public Transit Network Based on Complex Network Theory

作　　者：赵山春[1] 

机构地区：[1]兰州交通大学交通运输学院

出　　处：《中国安全科学学报》2013年第4期108-112,共5页China Safety Science Journal

基　　金：教育部人文社会科学研究青年基金资助(12YJC630200)

摘　　要：为缓解突发事件对城市公交不利影响,增强应付能力,提升运营效率,有必要对公交网络可靠性进行研究。基于复杂网络,分别采用L空间法、C空间法、P空间法构建公交站点、线路和换乘等3种网络模型,选取最大连通子网络的相对大小、平均最短路径长度和网络直径作为评价指标,给出仿真算法,通过计算机仿真研究3种网络在受到随机或蓄意攻击的情景下,评价指标的变化规律。以兰州市公交网络为例,仿真结果表明,公交站点网络对蓄意攻击和随机攻击均具有脆弱性,前者的影响更大;公交线路和换乘网络对随机攻击具有鲁棒性,对蓄意攻击具有脆弱性。建议今后在公交的规划、建设、运营中,加强对关键站点的管理和保护。It was held by the author that in order to mitigate the influence of emergencies on urban public transit, enhance the ability to meeting on emergency, improve its operating efficiency, it is highly necessa- ry to study the reliability of public transit network. Based on complex network theory, L-space method, C-space method and P-space method were used respectively to build three kinds of network models that are public transit sites network, public transit lines network and public transit interchange network. Maximum connected sub-network relative size, average shortest path length and the network diameter were selected as evaluation indexes, and a simulation algorithm was given. The variation trends of the three networks evaluation index were studied under random attacks or intentional attacks through simulation. Taking Lanzhou public transit network as an example, the simulation results show that the public transit sites net- work demonstrates a vulnerability to intentional attacks and random failures, in comparison, the influence of intentional attacks is more greater; the public transit lines network and public transit interchange net- work have robustness against random attacks, and demonstrate a vulnerability to intentional attacks. It was proposed that during the planning, construction, operation of the public transit, the management and pro- tection of the core sites should be paid great attention.

关 键 词：复杂网络 城市公交网络 可靠性 仿真 蓄意攻击 

分 类 号：X951[环境科学与工程—安全科学]