考虑行程时间约束的快速公交网络可靠性

Bus Rapid Transit Network Reliability Considering Travel Time Constraint

在分析快速公交网络特性的基础上,构造了快速公交网络重图模型和可靠性指标矩阵,同时建立了行程时间可靠性约束模型。然后采用组合优化的方法,建立包含可靠性指标和行程时间约束的快速公交网络的双层规划模型,其上层模型以系统最小资金投入为目标,下层模型满足用户平衡并以用户广义出行费用最小为优化目标,给出了求解算法。最后进行了简单网络的算例测试,计算结果表明,该模型能更好地评估快速公交网络性能。

On the basis of characteristics analysis of the rapid transit network,a multi-graph model and a reliability index matrix of the rapid transit network are constructed.Meanwhile,a travel time reliability constraint model is built.Then,through combinatorial optimization methods,a bi-level programming model for rapid transit network is also established,which consists of reliability indicators and travel time constraints.The objective function of the upper model is to minimize the capital investment of system while the underlying model satisfies the user equilibrium with minimizing user's generalized travel costs as its optimization target.Simultaneously the solution algorithm is given.Finally,the example of a simple network is tested.The numerical results show that the model is better able to assess the rapid transit network performance.