城市公共交通走廊动态客流分析模型

为了科学分析和评价城市公共交通走廊的客流流动规律,研究了走廊内乘客对于出发时刻及交通方式选择的问题,提出了城市公共交通走廊动态客流分析模型.模型主要由乘客出发时刻和交通方式选择组合动态均衡分配模型,以及乘客出行负效用模型两部分构成.在此基础上,设计了一套启发式算法求解该模型;并以上海市的跨江公共交通走廊为案例,验证所提出的模型和求解算法.研究结果表明,该模型能够真实反映城市公共交通走廊内客流的时空分布情况,以及行程时间、拥挤度及出行费用等因素对乘客出行选择的影响.所提出的模型可为城市公交走廊内各公共交通方式的合理搭配、运输组织模式优化提供决策支持.

Dynamic Passenger Flow Analysis Model in Urban Public Transportation Corridor

For researching the discipline of passenger flow in urban public transportation corridor, this paper focuses on the problem about passenger departure time and mode choice behavior along this corridor. A dynamic passenger flow analysis model is presented, which is composed of two parts. First, dynamic passenger flow equilibrium assignment sub model, which refers to departure time and path/mode choice of passenger, is established. Then, the paper proposes passenger travel disutility sub model. And a heuristic solution algorithm is developed to solve these two sub models. The paper chooses a real numerical example to illustrate the application of the dynamic passenger flow analysis model and solution algorithm. Based on the analysis result, this model can simulate the time space distribution of passenger flow in urban public transportation corridor with a consideration of some factors which influence travel disutility on the departure time and mode choice behavior of passenger, such as travel time, in vehicle crowding and so on. Obviously, this dynamic passenger flow analysis model can provide important support for improving the service level and efficiency of urban public transportation corridors.