Research On The Differentiation Of Performance And Spatial Effects Of Urban High-Speed Rail Junctions In The Yangtze River Economic Belt

The traffic connection system is a key link in the construction of a comprehensive three-dimensional traffic corridor in the Yangtze River Economic Belt,and is the basic guarantee for promoting the development of the Yangtze River Economic Belt.The high-speed rail connection system carries the "last mile of space-time compression"effect,which is the key to building an efficient and convenient modern integrated transportation system.It also plays an important role in guiding the industrial layout and urban development.The research on the high-speed rail connection system can fully respond to and serve national policies,and better support the country to realize the scientific development of urban integrated transportation hubs in the Yangtze River Economic Belt,improve the operating efficiency of the transportation system,and create a smoother path for the construction of the Yangtze River golden waterway.Provide scientific evidence.In this context,this article cuts into the high-speed rail connection system from the perspective of urban geography and planning,uses the TOPSIS gray correlation performance evaluation model to scientifically construct and measure the high-speed rail hub connection performance model,and uses space such as Arcgis,space syntax,CAD,and PS.Analysis and mapping tools to study the spatial effects of urban high-speed rail connection hubs,use the coupling coordination model to further analyze the functions of nodes and places in the high-speed rail station area of the Yangtze River Economic Belt,and the spatial development types of 37 high-speed rail hubs in the Yangtze River Economic Belt Make scientific and reasonable divisions,and propose optimization strategies for different types of high-speed rail hubs.Through the research in this article,we will enrich the research field of high-speed rail connection systems,and further develop the research content of transportation geography,urban geography,and urban planning.This paper focuses on the construction of high-speed rail hubs in the Yangtze River Economic Belt,the performance model and spatial differentiation,the analysis of urban spatial effects of high-speed rail hubs in the Yangtze River Economic Belt,the functional coupling of high-speed rail hub nodes and places in the Yangtze River Economic Belt,and the urban high-speed rail in the Yangtze Economic Belt 4 aspects of hub optimization analysis.The study found:(1)Construction of an evaluation model for the performance of high-speed rail hubs.In general,the performance of the high-speed rail hubs in the Yangtze River Economic Belt is "extremely poor".Most of the high-speed rail hubs in the Yangtze River Economic Belt are connected to medium-performance high-speed rail stations,with different levels of performance.It has an "olive" structure.It was found that it generally showed an uneven spatial distribution pattern of "high in the east,low in the west" and "high in the north,low in the south";at the level of the urban agglomeration,the performance generally showed a "core-edge" pattern of "urban agglomeration with high-margin low-city";At the city level,different levels of performance represent significant differences in the index values of cities;at the index level,the distribution of each index value in different cities is uneven,which has a significant impact on the level of high-speed rail connection performance.(2)The transfer direction of the city before and after the completion of the high-speed rail station can be divided into 4 types.Among them,the proportion of high-speed rail stations where the city's center of gravity shifts to the high-speed rail station area is the highest,and the proportion of high-speed rail stations whose direction of gravity shift is independent of the direction of the high-speed rail station.The smallest.The expansion speed of the high-speed railway station area is divided into four categories,namely fast,fast,medium speed and slow.The number of high-speed railways of the four grades is relatively uniform,but the expansion speed is extremely poor.Divide the development level of the completed land and divide it into 4 categories.The number of high-speed rail stations in low-development is the highest,and the number of high-speed rail stations in high-development is the smallest.The stations are divided into residential,commercial,industrial,There are 7 types of leisure,transportation,mixed and other types.Other types of HSR stations account for the highest proportion,and the number of residential HSR stations is second only to other types.(3)The stages of coupling and coordinated development of the 37 high-speed railway station nodes and sites in the Yangtze River Economic Belt are summarized as the low-level coupling stage,the antagonizing stage,and the running-in stage.The summary can be divided into 9 types.From a spatial perspective,high-speed,medium-level,and low-value high-speed rail stations are evenly distributed in the three regions of east,middle,and west.From the perspective of the three major regions,the node-site coupling coordination of the high-speed rail station area Degree eastern region>western region>central region.Some high-speed rail stations in the Yangtze River Economic Belt are in a balanced area.The value of the nodes and sites of the high-speed rail hub is relatively reasonable and belongs to a level of sustainable development.Other high-speed rail stations deviate from the balanced area,and future development is in danger.Based on the node-place evaluation map of the Yangtze River Economic Belt,the 37 types of high-speed rail stations are divided into 4 categories,namely mature high-speed rail new cities,growing high-speed rail new cities,growing high-speed rail functional areas,and start-up high-speed rail functional areas.(4)Based on the catalyst theory and TOD theory guidance,the optimized paths and institutional guarantees of four types of representative high-speed rail hubs in the Yangtze River Economic Belt are mature high-speed rail new towns,growing high-speed rail new towns,growing high-speed rail functional zones,and starting high-speed rail functional zones.