Amelioraiton of triangle transport networks and its application

By the principles of mid-point primate polarization and center of gravity primate polarization, this paper put forth two triangle networks with fractal geometry nature, i.e. (1) mid-point polarization network and (2) centre of gravity polarization network. After introducing concept of dendrite dimension, the paper determined their dendrite dimensions, suggesting that the mid-point polarization network(MPN) hold both growth-triangle advantages and optimal fractal dimension for an ideal transport network. Upon this view, this article discussed the application of MPN with an example of core urban agglomeration of Henan province, whose ideal transport network planning being given as well.