DeVelopment Planning Of Transport Infrastructure Structure In Dynamic Environment

Transport infrastructure investment, as a specific form of development planning of transport infrastructure structure, is the determinant and great driving force of transport infrastructure structure evolution, which directly affects the construction, structure and layout of transport infrastructure. To study the development planning of transport infrastructure structure based on investment scale, can unify the quantitative descriptions of transport infrastructure increment in different periods, regions and transportation modes, and facilitate the selection of quantitative methods to deepen the study of proportional relationships of transport infrastructure at different levels, which can provide a decision-making perspective for development planning of transport infrastructure structure.The study of development planning of transport infrastructure structure based on investment scale can be divided into three levels. The macro-level explores the relationship and adaptability between transport infrastructure investment and social and economic development. The meso-level studies the regional structure problem reflecting the allocation of transport infrastructure investment in regions and transportation modes structure problem reflecting the proportional relationships of network scale and capacities. The micro-level refers to regional transport infrastructure investment allocation between urban and rural, city transport infrastructure investment allocation among various transportation modes and transport infrastructure investment proportion in all aspects of one transportation mode. In order to study the macro-structure, regional structure and transportation modes structure of transport infrastructure investment, this dissertation uses qualitative analysis and decision-making model of transport infrastructure investment scale and optimization models and quantitative methods of investment allocation.With integration of macroeconomics, development economics, transport economics, operations research, transport development theory, optimal control theory, information entropy theory and both qualitative analysis and quantitative method, this dissertation studies the theory and methodology of development planning of transport infrastructure structure based on investment scale, whose feasibility and validity are verified by real and numerical examples. The following are the main content and conclusions of this dissertation.(1) The theoretical basis of development planning of transport infrastructure structure This dissertation explains the related concepts, such as transport infrastructure structure, development planning, dynamic environment, investment and capital stock, analyses the relationships of investment and development planning, investment and transport infrastructure structure, investment and transport demand structure, and summarizes the principles of development planning of transport infrastructure structure. On this basis, this dissertation proposes a number of research issues in macro, meso and microscopic levels of the development planning of transport infrastructure structure based on investment scale.(2) The macro-structure of transport infrastructure investmentBy analyzing the development and changes of the line mileage and freight transport volume of U.S. rail infrastructure, this dissertation proposes the enlightenment to transport infrastructure investment macro-structure. According to the enlightenment and transport development theory, this dissertation analyses the evolution of transport infrastructure investment macro-structure and proposes a dynamic strategy choice model of transport infrastructure investment in preliminary stage of transport development, which provides insights into analysis of transport infrastructure investment ratio from the view of strategic choice.(3) The regional structure planning of transport infrastructure investmentBased on the regional economic growth model and the information entropy theory, this dissertation establishes a multi-stage planning model of regional transport infrastructure investment allocation, which consider constraints of equity, and takes Beijing, Tianjin and Hebei province as an example. This dissertation uses quantitative method to describe the equity of regional transport infrastructure investment, proposes a model for transport infrastructure investment allocation, which takes into account the efficiency and equity of investment and provides a theoretical basis and decision-making aid for regional structure planning of transport infrastructure investment.(4) The transport infrastructure network design considering transportation modes and investment constraintsUnder different demand environments, the technical and economic characteristics of various transportation modes change dramatically and there may even be a reversal of comparative advantage. This dissertation discusses the design problem of transport infrastructure network which contains transportation modes and investment constraints in order to plan transportation modes structure of transport infrastructure investment. This dissertation establishes a multi-period bi-level programming model for comprehensive transport network design under dynamic demand environment. The upper level problem is to maximize the consumer surplus of all demand scenarios with budget constraint; while under the network investment decisions of the upper level problem, the lower level problem is to maximize the consumer surplus of every demand scenario considering the collaboration of transportation modes, traffic load balancing and capacity constraints. Compared with the previous research, the model can optimize the final form of comprehensive transport network and construction timing simultaneously, consider all annual coordination between transportation infrastructure construction and transport demand, reflect the cooperation and balanced development of transportation modes, which is closer to the real and has wider adaptabilities.Study of the development planning of transport infrastructure structure under dynamic environment based on investment scale, can quantify the proportional relationships of transport infrastructure structure in macro-structure, regional structure and transportation modes structure, which provides the theory and methodology support for studying and determining the comprehensive transport network scale, coordinating the regional transport infrastructure development and exerting the technical and economic characteristics of transportation modes and the whole efficiency of transport system.