城市群交通网络抗毁性仿真研究

Invulnerability Simulation Analysis of Compound Traffic Network in Urban Agglomeration

为保障城市群交通运输系统安全运营,以复合的视角探索城市群交通网络抗毁性。采用站点映射法构建城市群加权复合交通网络模型。针对城市群加权复合交通网络结构,对传统抗毁性测度指标进行修正并确定攻击模式。以呼包鄂城市群为例进行实证研究,构建道路-轨道加权复合交通网络模型,对网络抗毁性进行仿真,识别路网中的关键站点。结果表明:城市群复合交通网络的构建有效提高了单一运输方式网络的抗毁性,通过对识别出的关键站点加强防护提高城市群复合交通网络的抗毁性。

To ensure the security operations of urban agglomeration transportation system, the perspective on compound network is used to explore the invulnerability of urban agglomeration traffic network. The site mapping method is used to buiM the model of weighted compound traffic network in city agglomeration. The traditional invulnerability metrics is revised and the attack strategies are determined according to the structure of the network. Hu-Bao-E city agglomeration is taken as an example to build the weighted compound traffic network model which is composed of road network and rail transit network, simulating the invulnerability and identifying key nodes in the city agglomeration. Results show that the construction of compound traffic network effectively improves the invulnerability of single mode traffic network and the strengthening protection of the key nodes can improve the invulnerability of compound traffic network in city agglomeration.