Assessment of the street space quality in the metro station areas at different spatial scales and its impact on the urban vitality  

作　　者：Zhongwei Guo Keqian Luo Zhixiang Yan Ang Hu Chaoshen Wang Ying Mao Shaofei Niu 

机构地区：[1]School of Arts,Sichuan University Jinjiang College,Meishan 620860,China [2]School of Architecture,Southwest Minzu University,Chengdu 610225,China [3]China Southwest Architectural Design and Research Institute,Chengdu 610041,China [4]Asian Urban TOD Research Center,Institute of Industrial Science,The University of Tokyo,Tokyo 113-8656,Japan [5]College of Architecture and Environment,Sichuan University,Chengdu 610064,China

出　　处：《Frontiers of Architectural Research》2024年第6期1270-1287,共18页建筑学研究前沿(英文版)

基　　金：funded by China Postdoctoral Science Foundation(Grant No.2020M673222);the Natural Science Foundation of Sichuan Province(Grant No.2023NSFSC0898);the National Natural Science Foundation of China(Grant No.52108021).

摘　　要：Streets play a crucial role in the pedestrian catchment area(PCA)of metro stations.However,the large-scale quality measurement of street space and its influence on the vitality of station area have not been well revealed.With multisource big data such as points of interest(POI),and street view images,a three-dimensional evaluation system based on the pyramid scene parsing network(PSPNet)and spatial design network analysis(sDNA)is constructed.73 metro stations in the Third Ring Road of Chengdu are chosen as research samples to carry out large-scale quantitative evaluation of street space in PCAs to reveal the quality characteristics of street space at the overall urban,PCA,and circle scales.Furthermore,this study constructs two multiple linear regression models of weekdays and weekends to explore the relationship between urban vitality and street space quality indicators.The results indicate a heterogeneous distribution of street quality on an urban scale.Streets located in the 300-500 m of PCAs rate highest in terms of convenience and the overall street space quality.The functionality dimension of street spaces in the sample PCAs of Chengdu present a gradient effect with the highest score of 0-300 m in the circle,while the comfortability dimension of streets shows an opposite trend.The multiple linear regression analysis show that street quality indicators are more explanatory of the weekday vitality than the weekend vitality.It indicates that well-connected street network,pleasant street scale,and abundant urban facilities have the greatest effect on urban vitality in the PCAs.The findings can provide new ideas for making targeted interventions in the urban design of metro station areas,to improve the quality of streets and foster urban vitality.

关 键 词：Street quality Metro station Pedestrian catchment area TOD(Transit-oriented development) Evaluation Urban vitality 

分 类 号：O17[理学—数学]