Highway network layout of the city groups based on the layout method of node important degree with area location

In order to strengthen the city groups' coordinated development of transport infrastructure and to promote human,goods and capital of city groups flowing reasonable exchanges in the highway network layout of the city groups study,the area location character of city groups was analyzed with the area location theory.The double-decker planning model of layout highway network was established based on genetic algorithm and the newmethod of highway network layout that combined the theory was given for the node important degree and area location.This method can make a rational plan for the highway network layout of the city groups and can promote to realize the coordinated,rapid and healthy development of regional economy and society,so it is of practical significance.