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为对具有一定规模的干线公路网进行布局优化,将空间相互作用模型及交通对城镇发展影响的经济势理论结合,构建了节点优势度模型,并提出了基于该模型的干线公路网布局优化方法。该方法将节点优势度模型与叠层路网最优树、空间连通圆理论结合,以此确定线路的走向与主要控制点,并结合经验进行逐步调整,最终通过重新测算不同布局优化方案的节点优势度评价比选出最优方案。应用实例表明:该方法具有理论上的合理性和实际上的可操作性,能切实起到优化干线公路网布局的作用。
In order to optimize the layout of the trunk highway network with a certain scale, the model of node dominance was constructed by combining the spatial interaction model with the economic potential theory of the impact of traffic on the urban development. The optimization method of the layout of trunk highway network based on the model was proposed . In this method, the node dominance model is combined with the theory of optimal tree and space connected circle of laminated network to determine the direction of the line and the main control points. Based on the experience, the method is adjusted step by step. Finally, the nodes of different layout optimization schemes are recalculated Dominance evaluation than the best choice. The application example shows that this method has theoretical rationality and practical operability, which can effectively play the role of optimizing the layout of trunk road network.