Study On Decision Making Exit-Entrance Sitting Of Freeway

Along with the significant growth of amount of freeway traffic, the freeway as the important marking of the modernization transport have a remarkable effect on transport, more and more. The exit-entrance as a part of freeway, can not only comb and control traffic stream, and promote the development of economy in its setting district. Therefore, the exit-entrance is a very important component part of freeway. This thesis circumfusing layout problem of freeway exit-entrance sitting, work over following several theoretics and application task.1. First, principle and qualification of freeway exit-entrance setting is made certain, and influential factor of location problem of freeway entrance-exit is analyzed in depth. Whereafter, analyse and explain case appearing in engineering example.2. Applying importance method of network layout , make order to each city of district passed by road, then get the city(district) that the exit-entrance should set, and applying centre of gravity method to find the perfect station. Then by analyzing the relation and interactional rule of exit-entrance and influential factor, put forward some selective cases.3. Based on the theory of engineering evaluation and decision-making, the techniques of fuzzy multiobjective decision-making are applied to make optimal decision alternatives. A hierarchy system of the assessment criteria for decision is established, and the effective methods of evaluating and normalizing the values of the criteria are advanced, which has referable value for research on system engineering theory and multiobjective decision-making technique. Finally, Carry validation on the research by the concrete case.