Research On The Evaluation Of Public Space Quality Of Urban Metro Interchange Stations Based On Multi-source Data

At present,China’s urban construction is at a critical stage of transition from incremental expansion to stock optimisation,and urban construction is also changing from rapid development to connotation enhancement,with people increasingly pursuing a sense of comfort and happiness in their lives.As an important node for the distribution of urban people,the evaluation and improvement of the quality of public space in the station area of metro interchange stations has become a pressing issue.Through the comprehensive use of literature analysis,field research,spatial analysis and visual semantic segmentation,the evaluation indexes of the spatial quality of metro interchange stations are clarified,and an evaluation system of three sub-target layers,eight guideline layers and 33 indicator layers is constructed based on the principles of scientificity,systematicity,accuracy,applicability and operability.Based on the spatial data of urban road network and building base map data,Baidu street view data,POI data,Baidu API path data,public review data,Baidu heat map and field research data analysis of questionnaires,the spatial quality of the station area is quantitatively evaluated and the evaluation results are compared and analysed based on the scores.The results were compared and analysed.The results of the analysis show that the rich traffic construction elements and spatial landmarks,adequate living services and commercial facilities in the Yingkou Road station area enhance the gathering of people and the spatial vitality of the station area,while the complete road traffic and infrastructure construction and the perfect public transport,motorized and non-motorized services provide a better visual perception and environmental experience for people to travel,and its spatial quality is relatively The spatial quality of the public space of the Cultural Centre Station is good,but the spatial diversity and vitality are relatively insufficient,making the environmental attributes of the station relatively low;while the environmental facilities to enhance spatial vitality of the Southwest Corner Station are not sufficiently equipped,and the level of spatial environmental attributes is relatively low.The station area in the southwest corner is not sufficiently equipped with environmental facilities to enhance spatial vitality,and the level of spatial environmental attributes is relatively low,while the visual perception of the station area needs to be strengthened.Based on the results of the comparative analysis,the main elements affecting the quality of public space in the metro interchange station area are further summarised,and the main elements are proposed to improve the visual perception based on "recognisability",optimise the use experience based on "safety",and improve the environment based on "diversity".The strategy of optimising the public space of metro interchange stations is a combination of visual perception enhancement based on "recognisability",user experience optimisation based on "safety",and environmental attributes optimisation based on "diversity",in order to improve the quality of public space and service level.