研究基于网络结构的城市道路可靠性对于保障大型灾害或事故后道路的连通有着重要的意义。通过合理设计网络结构可以有效降低这种灾害或事故对道路网络造成的严重影响。连通可靠性是研究网络结构的有效指标,这里将其作为系统的优化目标建立了基于连通可靠性的城市道路交通网络设计模型,并运用分支定界法对其求解。通过大型算例验证了所建模型的合理性和求解算法的有效性。
It is important to ensure the urban road network connecting after large disaster or accident, and it based on network structure. Rational network design can decrease the severity impact of these disasters or accident. The connected reliability is significant index for studing the network substance structure. As the transportation system optimal objective, it setup the urban road transportation discrete network design model based on the connected reliability, and use the branch and bound algorithm to solve the problem. The case results illustrate that the rationality of model and the feasibility of solution algorithm.