Research On Impact Of Rapid Transit Urban Spatial Structure And Optimization In Jinan

With the rapid growth of China’s economy,China’s urbanization has entered a stage of rapid development.Therefore,the changes about urbanization are mainly reflected in the development of urban space and the evolution of the structure.There are many factors that affect the urban spatial structure,including the natural geographical environment,social and economic development,etc.In the era of world economic integration,the influence of traffic and transportation is more and more remarkable.In order to adapt to the rapid development of economy,the construction of transportation facilities in our country is speeding up year by year.Ji’nan,as the capital of Shandong Province,has the development of high-speed traffic system.This paper takes Ji’nan as the research object,and studies the influence of high speed traffic on the urban spatial structure of Ji’nan.Summing up the previous theoretical experience,Using different methods and models to reveal the law and mechanism of the influence of high speed traffic on urban spatial structure,Furthermore,the influence of high speed traffic on urban spatial structure in Ji’nan is analyzed,In order to explore the problems of urban spatial structure in Ji’nan under the influence of high speed traffic,and put forward the corresponding countermeasures.The main research conclusions are as follows:(1)The analysis of the influence of transportation on urban spatial development in Ji’nan is analyzed from two aspects: economic growth and social development.For the economy,analyze the relations between China’s different high-speed traffic construction mileage and per capita GDP,the Ji’nan municipal transportation investment accounted for the proportion of GDP changes,using the SPSS software,quantitative analysis of the relationship between rapid growth of passenger and cargo traffic in Ji’nan city and economic growth,the relations are significant.For the social development,analyzes the relationship between employment of third industry,city residents per capita disposable income and the transportation passenger and freight volume,results also showed significant correlation;With the Cubic parabola model to analyze the correlation relationship between uebanization rate,freight area and the rate of comprehensive transportation passenger respectively,they are also showed a higher correlationcoefficient.In short,there is a strong correlation between the city space development and transportation,two in multi aspects,mutual promotion and mutual coordination,mutual influence,especially with the development of society,economic growth,deepening the relationship between regions,accelerating,formation of high speed transportation system,high-speed traffic has become the main driving force to promote the development of city space.(2)The influence of high speed traffic on the urban spatial structure of Ji’nan is analyzed from three aspects: the regional urban system structure,the urban spatial form and the urban land structure.The mechanism of high speed traffic is established,the influence mechanism of high speed traffic on regional spatial structure includes accessibility model,spatial interaction model and fracture point model.The mechanism of the influence of high speed traffic on the spatial morphology is mainly the expansion of urban spatial morphology,the intensity index and the velocity index model,the compact and fractal dimension model.The measurement of urban land use structure is based on the urban land use diversity index,equilibrium index and urban land expansion index.In short,From a regional perspective,high-speed traffic by increasing regional accessibility,accelerate the speed of interactions between regions,expanding the hinterland of the city center,thus change the size of Ji’nan City and promote the development of the regional city system and city circle formation.From the view of the city,the high speed traffic economic belt has led to the expansion of urban space and accelerate the urban agglomeration and diffusion,which has an important impact on the evolution of urban spatial form of Ji’nan.The externality of high speed traffic changes the value,diversity and balance of urban land,which leads to the change of urban land use structure.(3)Optimization countermeasures of urban spatial structure in Ji’nan under the influence of high speed traffic.According to the high-speed traffic under the influence of the rationality of urban spatial structure in Ji’nan City,for the construction of evaluation index system,the evaluation model is established,the rationality of changes in recent 20 years in Ji’nan city spatial structure layout.This paper analyzes the problems existing in the external regional architecture,the internal urban form and the land use structure.Finally,from the angle of city and traffic,the corresponding optimization countermeasures are put forward.