Identification and optimization of transport corridors in comprehensive traffic network of urban agglomeration

To optimize the layout structure of comprehensive transport corridors in urban agglomeration more objectively, this paper took comprehensive traffic network of urban agglomeration as study object, and used the dynamical system theory, production function and heuristic function to build the dynamic traffic network model of urban agglomeration. The recognition features and evaluation indexes of transport corridors were determined. The choice behavior of transport demand in traffic network was simulated by use of the ant colony algorithm. The load value analysis was carried out according to the transportation hub and road section. The results show that the layout and the number of transport corridors in the comprehensive traffic network can be changed by the improvement of traffic capacity of transportation hub and road section. The best way to optimize transport corridors in comprehensive traffic network of urban agglomeration is not improving the traffic capacity of the overload transport corridors in transportation hub and road section, but improving the traffic capacity of overload road section and associated transportation hub in the comprehensive traffic network. It is believed that the careful study on identification and optimization of the transport corridors do have guiding significance for the transport corridors planning and construction in comprehensive traffic network of urban agglomeration. ©, 2015, Editorial Department of Journal of Chang'an University (Natural Science Edition). All right reserved.