交通事故影响下的城市局部路网脆弱性研究

Study on the Vulnerability of Urban Local Road Network Under the Influence of Traffic Accidents

脆弱性研究是研究城市道路运输系统干扰应对能力的关键性课题。本文通过建立武汉市江汉区局部路网模型,结合攻击模型,基于历史事故数据确定攻击策略,提出不同攻击策略下,以全局网络效率、局部网络效率和最大连通度为评价指标的城市局部路网脆弱性分析方法。结果表明:基于历史事故数据可以有效判别事故影响下的城市局部路网的脆弱性,且城市局部道路网络在交叉口发生交通事故时,表现出强于路段上发生事故的脆弱性。最后根据判别结果提出了部分建议,以期增强道路系统的抗干扰能力和通行安全性。

Vulnerability research is a key topic to study the interference response ability of urban road transportation systems. This paper establishes a local road network model in Jianghan District, Wuhan City, combines the attack model, determines the attack strategy based on historical acci-dent data, and proposes an urban local road network vulnerability analysis method with global network efficiency, local network efficiency and maximum connectivity as evaluation indicators under different attack strategies. The results show that based on historical accident data, the vulnerability of the urban local road network under the impact of the accident can be effectively judged, and the urban local road network shows stronger vulnerability than the accident on the road section when there is a traffic accident at the intersection. Finally, some suggestions are put forward according to the judgment results, in order to enhance the anti-interference ability and traffic safety of the road system.