区域综合交通枢纽布局双层规划模型

Bi-level programming model for regional integrated transportation hub layout

为了提高综合交通系统的运行效率,通过构建区域不同运输方式间随机配流模型,建立了区域综合交通枢纽布局双层规划模型.该模型运用系统工程的建模思想,从区域综合交通枢纽与交通网络之间的动态关系出发,考虑一定建设投资费用及环境承载力和能源消耗等约束条件;既保证用户的广义费用最低,同时使整个运输系统的社会效益最大.以京津冀区域为例,并以京津冀区域城际客运铁路网规划调查数据为基础,同时辅以一定量的交通调查,进行数据校核及模型参数的标定,验证建立模型的合理性及遗传模拟退火算法求解该模型的优越性.结果说明该模型对实现各种运输方式有效衔接具有较好的辅助决策支持.

By designing an intermodal stochastic equilibrium assignment model for regional transportation,a bi-level programming model is developed for improving the operational efficiency of integrated transportation system.In this model the constraints such as budget,environment carrying capacity,and energy consumption,etc.,are taken into account,and the dynamic interactions between transportation hubs and transportation network are considered synchronously.The model can represent two different interest entities of transportation hub： users and hub decision-makers,and ensure both a minimum user generalized cost and a maximum of social benefit in the system.Taking Beijing-Tianjin-Hebei area for instance,the model parameters was calibrated by using the Beijing-Tianjin-Hebei intercity passenger rail survey and other supplementary traffic survey data,and the rationality of the model and the advantages of using the genetic simulated annealing as the solution algorithm was further validated.Results show that the model can be a promising approach to support the assistant decision-making on integrating different modes at the regional level.