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柔性时间约束突发事件是对疏散时间强制程度较小的突发事件。为有效处理城市中这类突发事件下的人员疏散问题,在分析柔性时间约束突发事件特点的基础上,提出完整的突发事件交通疏散规划框架。根据我国现阶段国情,以总的疏散时间最少为决策目标,同时面向私人汽车和公共汽车2种方式,综合考虑成本费用、车辆保有量、道路容量等资源约束条件,建立求解突发事件交通疏散方案的整数线性规划(ILP)模型,并给出有效的求解算法。最后通过算例,演示应用模型及算法求解交通疏散规划方案的详细过程。结果表明,应用研究成果求解得到疏散交通工具选择及其路线安排方案,可以实现在一定资源约束下总的疏散时间最少。
Flexible Time Constraints An emergency is an emergency that is less forceful to the evacuation time. In order to effectively deal with the evacuation of personnel under such emergencies in cities, this paper proposes a complete evacuation planning framework for emergency evacuation based on the analysis of the characteristics of emergency incidents with flexible time constraints. According to China’s national conditions at present, taking the total evacuation time as the decision-making target, at the same time, it aims at private car and bus at the same time in two ways. Considering resource constraints such as cost, vehicle ownership and road capacity, Program integer linear programming (ILP) model, and gives an effective solution to the algorithm. Finally, the detailed process of solving the planning of traffic evacuation by demonstrating the application model and algorithm through examples is given. The results show that the application of research results to solve the evacuation of vehicles to choose and route arrangements, the total evacuation time can be achieved with certain resources constraints.