基于时间依赖网络的城市交通紧急疏散线路研究

研究时间依赖网络的城市紧急疏散交通线路问题.在对考虑疏散过程中交叉口延误和通行能力、紧急疏散网络防堵塞改造已有研究的基础上,对紧急疏散时城市交通网络的时变特性进行分析,提出了动态路阻交通紧急疏散线路的思想.考虑到紧急疏散时不一定满足FIFO要求的特性,将研究对象转化为时间依赖非FIFO网络交通紧急疏散线路的确定问题,建...

Study on Emergency Evacuation Routes of Urban Traffic Based on Time Dependent Network

The problem of emergency evacuation routes of urban traffic in the time dependent network was studied. The time variant characteristic of urban traffic network was discussed based on the studies of emergency evacuation processes including intersection delay, traffic capacity, improving for preventing the blockage. The thought that to design the evacuation routes of urban traffic in dynamic road impedance network was proposed. Based on the non-first-in-first-out characteristic analysis of vehicles in emergency evacuation processes, the research object was transformed to determine the emergency evacuation routes in the time dependent non-first-in-first-out network. The model of emergency evacuation routes in urban traffic network was established to minimum generalized expense flow, which includes variable travel time, intersection delay and waiting time. The synthetic algorithm in the concrete optimization course was adopted for solution by using the successive shortest expense flow and the shortest path in the time dependent non-first-in-first-out network. The simulation result shows that the principle and the method are correct and feasible.