Research On The Vitality Of Urban Street Network Space In Main Urban Area Of Harbin

The research on the vitality of urban street network is crucial to urban planning and construction.Good urban street network planning has a profound impact on the history,culture and architectural landscape of the city.It objectively forms the organic whole of the city in the physical space level,carries certain urban functions,attracts and serves the urban population,and stimulates the vitality of the city.The urban street network space in the main urban area of the megacity of Harbin is representative to some extent.The exploration and research of its spatial form,urban function and spatial vitality by rigorous and scientific method can provide reference for the research of other urban form and street network,and has certain reference significance.Through the comprehensive use of GIS,SPSS,spatial syntax,spatial autocorrelation and other spatial measurement techniques,this paper analyzes the spatial data of street network in Harbin main city,and establishes the spatial form model of urban street network(twodimensional form model of urban street network,three-dimensional form model of urban street network)and spatial vitality model of urban street network.(1)Firstly,the spatial structure of the two-dimensional morphological model of the Total Depth of urban street network is obtained by visualizing the spatial autocorrelation of the Total Depth of road network in the main urban area of Harbin;According to the visualization of spatial autocorrelation of road network Integration in Harbin main city,the spatial structure of two-dimensional morphological model of urban street network Integration is sorted out.(2)Then,the quantitative analysis of urban function and vitality is carried out in different areas of the city,giving urban regional functions.(3)In addition,SPSS mathematical fitting analysis is carried out on the three-dimensional shape model of urban street network and the spatial vitality model of urban street network to explore the law between the spatial shape of urban street network and urban vitality,so it is concluded that the street height-width ratio of the street building interface in the main urban area of Harbin is best controlled at [0.7,2] to set up the planning proposal of the street-facing building.(4)Finally,the mismatch of urban vitality is found through the physical attribution of multiple dependent factors.Then,according to the method of "planning and decision-making with the help of multi-source data and spatial syntax",the improvement strategy of road network in Harbin’s main urban area is put forward,which can provide reference for urban construction and planning.