Based On The Integration Of SD-MOP Integrated Transport Corridor Configuration Optimization Studies

It is an effective way to adjust the developmental scale of various transportation modes and meet travel demand, that the structure of transportation corridor is configured. It directly affects not only the balance of transportation corridor system, but also the construction and decision of various transportation modes project, so it is the key to improve the efficiency of comprehensive transportation system. The main problems of structure configuration are to confirm traffic sharing rates and investment rates of various transportation modes, and to forecast these modes'scale in reason. These are beneficial for cooperation among all transportation modes and planning of transportation corridor.Firstly, the major factors are analyzed, which influence structure change of transportation corridor, and structure change mechanism is put forward. Secondly, based on the mechanism, a system dynamics model (SD model) is set up so as to reflect evolvement tendency of corridor structure. The SD model is made up of social-economic system, demand system, supply system, and investment system. Thirdly, a multi-objective programming model (MOP model) is set up to optimize corridor structure. The MOP model is composed of passenger transport supply-demand balance objective function, freight transport supply-demand balance objective function and energy sources consuming objective function. At the same time, the method and process how to calculate MOP model using genetic algorithm is recommended. Further, under the guidance of bi-level programming model, the approach of setting up SD-MOP integrated model is studied, which integrates SD model and MOP model, and the solving procedure is discussed. Finally, taking jiangsu coastal transportation corridor as an example, the structure configuration of the corridor is optimized, and some suggestions are proposed.