Application Of Node Dominance Degree Model In Layout Optimization Of Arterial Highway Network In Tianjin

With the gradual development of highways,the gradual development of rural road systems,and the gradual development of townships and urban roads,trunk highways,as an important carrier of provincial traffic and economic development,have undergone major changes in their functions and functions.It is necessary to reorient the strategy of the trunk roads.The trunk roads should serve the local economy,reduce the regional development differences,balance the development opportunities in different regions,and serve the urbanization of the region better.In order to reduce the regional development differences caused by the layout of highways and highways and to equalize the development opportunities and conditions of each region in the highway network layout,the advantages of nodes are used in view of the fairness of the allocation of highway traffic resources and the balance of highway network layout structure.The degree model analyzes the nodes and uses the cluster analysis method to divide the node hierarchy.According to the results of the node hierarchy,the layout of the highway network of Tianjin trunk highway was optimized by using the layout method of the optimal road network tree and the spatial connectivity circle.Finally,according to the layout results,around the enhancement of the economic ties of the peer nodes,the traffic connections between the nodes at different levels are refined to optimize the layout structure.After the optimization,the highway network in Tianjin is close to the ring network and square grid.According to the technical evaluation of the layout optimization results,the results show that the connectivity of the highway network layout optimization structure in Tianjin has been greatly improved,and the regional development opportunities have been more balanced.