Evaluation And Design Research On Public Space Of Rail Transit Complex Connecting Fields

With the continuous expansion of urban space and economic scale in our country,the pressure on urban transportation is increasing day by day.Rail transit is the main means to alleviate traffic contradictions.Its construction and development not only improve the connectivity between urban areas,but also give birth to a complex and diverse space connected with it.The cohesive space surrounding the rail transit complex is not only a product of high density and intensive urbanization,but also a key node of three-dimensional integration.Due to its huge crowd effect,it has become an important place and social focus of urban vitality.This paper takes the public space of rail transit complex connection field as the research object,and starts research from three aspects: concept definition,vitality evaluation and strategy proposal: The first part is to sort out the current status and related issues of rail transit,rail transit complex and its public space at home and abroad,and expand the concept based on the rail transit complex connection space,takeing into account factors such as accessibility of roads,built resources,and site vitality.The“surface”of the field is used to replace the“point”of the space,and the concept of the public space of the rail transit complex connection field is proposed,and it is divided into three types: interface type,streamline type and node type according to the functional layout.In the second part,based on the classification of the public space of the cohesive field,combined with literature collation and questionnaire survey,the fuzzy Delphi method is used to define the vitality indicators and connotations of different types of the public space of the connection field,and through the analytic hierarchy process to complete the determination of the index weight,complete the construction of the vitality evaluation system.At the same time,taking Qingdao as an example,three typical rail transit complexes,Wanxiang City,Golden Lion,and Leke City,are selected to select carry out the selection and delimitation of the public space of connection field,with the help of urban space network analysis technology(UNA)of the Arc GIS platform,the overall vitality evaluation of public space is formed,and conduct a horizontal vitality comparison analysis for three different types of spaces,and select the space types that need to be optimized.The third part,based on the preliminary evaluation results,combined with the current situation and resources of the site to optimize the design of the interface space of the Wanxiang City,the streamlined space of the Golden Lion and the node-shaped space of the Leke City respectively,and the evaluation results after the transformation Comparing with the current situation,and then summed up the different optimization design strategies for the three types of connecting field public space.From the perspective of human use,the article takes the use of public space in the micro-level connection as the starting point,combines qualitative and quantitative,analyzes layer by layer,and conducts design evaluation on the basis of classification,and the conclusion is more realistic.The optimization suggestions of significance and guiding significance will then promote the integration of different spatial levels,and help the improvement of the quality and vitality of urban public spaces under the new situation.