Study On The Connected Problems Of Freeway And Urban Road

With the rapid economic development and expanding the size of cities, the convergence of freeways and urban roads is increasingly important, as the inevitable problems of urban development. The purpose of thesis is to give full play to the functions of freeways and urban roads and to achieve a seamless interface.Based on the characteristics and classifications between the freeway and urban road, the article has analyzed the relationship between them from the structure of form and function. The four transit modes of freeway are proposed, and the interaction is been analyzed between transit modes and urban forms. The convergence lines are analyzed from traffic characteristics and functions.The article has analyzed on the interface layout planning of the connected-way network and network nodes. Planning goals and ideas of the interface layout are proposed, also the methods of determining the amount of convergence line and the advantage of index are proposed. The article has analyzed the convergence of the functions of the Department of positioning, and built the calculation model of the Department of positioning. The types and layout requirements of nodes are investigated about two roads.The article has built the scheme overall evaluation index system from four respects which are rationality from the services, bridging organizational rationality, economic rationality and environmental impact. Finally, the article carries out an overall evaluation to the linking up network of Xi'an-Lam Tin freeway with the urban roads of Xi'an by Fussy comprehensive evaluation. It has a real important significance to bring into full play of freeway and urban road and to realize an unobstructed link between freeway and road traffic.