To Research Into The Linear Optimization Layout Of High-Grade Highway

The society with developed economy must have modernized highway communication, the modernized highway communication must have enough high-grade highways, the high grade needs high quality to be guaranteed, but in the construction of the high-quality highway ,making to whole highway route rational overall arrangement shows important particularly. In order to solve high-grade highway route optimize problem, such as: route optimization and selected shape of line of route of trend optimize. This thesis starts with influencing the route to plan the factor of the overall arrangement mainly, proposes one optimization route new train of thought of overall arrangement analyse with fuzzy comprehensive evaluation assessment and level theory to solve route scheme select the superior promptly.The article has analysed the factor influencing the high grade highway route overall arrangement scheme to choose at first, and classified according to the nature of every influence factor, and confirmed its important degree, and offered corresponding weight value.Secondly, the article has set up high grade highway route overall arrangement and optimize the mathematics model chosen, and proposed optimizing the method. It includes concretely: carrying on multistage fuzzy comprehensive appraisal to every overall arrangement scheme that is drafted in step with the fuzzy comprehensive evaluation assessment,confirming the route overall arrangement scheme optimized; the optimum seeking result of the scheme, directing against the factor influencing line shape of route according to the overall arrangement of the route, forming these factors according to dominance relation orderly level pass steps structure, and using the analytic approach of the level principle, constructing the comparative judgment matrix among the influence factors; chasing layer calculate and examining to every key element, carrying on level always arranged in an order, confirming the scheme of optimizing.Moreover, the article has combined the planning and construction of theChangj iang River of Yichang, highway bridge originally prop up the urban first class highway ", and used the fuzzy comprehensive evaluation assessment and analytic approach of the level to optimize positive research to the high grade of routes overall arrangement of highway, and satisfied with the result.Finally, the article has optimized to high grades of highway route overall arrangement scheme need to make working further after confirming, and proposed probing into and looking into the distance.It is a more complicated problem that the high grade highway route overall arrangement is optimized. It needs to consider all the influence factors, and then adopt the way of determining the nature and combine together with quantitative factor and make comprehensive appraisal to the overall arrangement schemes synthetically all-sidedly. The research of the thesis shows: Optimize theory describes and makes the target as model, array, level, and deals with every scheme that determines the nature and quantitative factor chosen in unison that appraised, Its result is objective, true, reliable, can plan making policy to offer scientific basis finally of overall arrangement for the route of the highway;the fuzzy comprehensive evaluation assessment is simple, clear, practical, can make more factors participated in judging, and overcome the subjective and random that existed when chosen the route scheme; level analytic approach promises high grade highway route overall arrangement scheme judge and carries out the transition to from single factor index multifactor synthesis of index judge, and the result is convincible. In a word, with the model of optimizing choose the constant perfection in practice in the route, the fuzzy comprehensive evaluation assessment and level theory has extensive using value among the overalls arrangement of the route of the highway.