Research On Coordination Theory Of The Planning Of Comprehensiive Transport Hub

With the rapid development of transport industry, a variety of pressing issues have emerged:to accelerate the development of an integrated transport system, to improve the overall efficiency of transportation systems,to build a resource-saving and environment-friendly transport system and to promote the sustainable development of transport. Among them, one of the key issues during the research of the integrated transport system is how to build such a transport hub system. The planning of an integrated transport hub consist of the site layout, construction scale and sequence, and other special plannings, It has become a topic with great practical significance that from the point of view of system, to intergrate all parts of integrated transport hub planning into a coordinated planning for the purpose of achieving a better planning outcome,. This paper has built three bi-level models respectively for the problems of the establishment of site location, site size and construction sequence, with the objet of minimizing the social total traffic-travel cost.Based upon these,the paper has also discussed the theory and methods for the coordinated planning of integrated transport hub site. The main research contents of this dissertation are listed as follows:1. The systemic view of the integrated transport hub site planning was introduced, which can make easy the carding and disintegration of the system. After an in-depth discussion of the decision-making mode in the planning, basic types and traditional ideas,combined with the coordination concepts and theories,the paper has put forward a comprehensive and coordinated concept for the planning of intergrated transport hubs.This concept can be considered as the theory for the before-planning and in-planning at the same time.The systematic theoretical explanation for the concept has also been given in this paper from the levels of planning process, methods, mechanisms and objectives2. An integrated transport system has been established,with reflect of the impact of road network layout for an integrated transport network. A in-depth analysis has been made for the three special plannings---site location, site size and construction sequence.This paper considering the feedback relationship between the planning of the integrated transport system and the distribution of passenger. Then, based on the unified platform provided by the network, three bi-level models have been set up respectively for the special plannings. And three examples of planning models can be well solved with the designed solution algorithms3. The coupled coordination was carefully analysed in the subsystem level (special) planning. In the frame of collaborative optimization, after the extraction of the planning varables, a mathematical description has been given for the coordinated site-planning. Based upon the extremly difficult solution algorithm of collaborative optimization, combining with the characteristics of the system-planning model, using an appropriate information transferring method, the paper has set up a coordinated planning model for the integrated transport hub site. Experiments by the same examples show that the model can achieve better planning sheme. The optimization effect of the coordinated planning model has been well demonstrated by the exemples.