Abstract:

Transportation network system has significant effect on the optimization of spatial structure of urban agglomeration.With the approaching HighSpeed Railway Age,the Yangtze River Delta regional spatial structure will changes significantly.With the introduction of the concept of accessibility and the measurement factors of weighted shortest travel time of the transport network of 2010 and 2020,this paper concludes that the development of HighSpeed Railway has the following effects on the Yangtze River Delta regional spatial structure.First of all,HighSpeed Railway completely enhances accessibility within the Yangtze River Delta area,greatly shortens temporal and spatial distance between cities,promotes the integrated development of the Yangtze River Delta and boosts formation of regional balance of the spatial structure by formation and development of metropolitan area and economic developing axis. Secondly,HighSpeed Railway accelerates the formation of multicentral spatial structure,but it differently affects the accessibilities of different cities.So,different cities should seek their own development strategies according to their different characteristics under the HighSpeed Railway Age