Nowadays, the shortage of available urban land and the booming construction of urban subway are driving the rapid development of Underground Space in the Metro Area (USIMA) which is an important constituent in the compact development of cities. Spatial vitality, as one of the most important evaluation indicators for the layout of such metro-related underground space, is closely related to spatial efficiency. Therefore, taking Shanghai People’s Square Metro Station (SPSMS) as a case study, this paper investigated the variable factors of the spatial vitality in USIMA by using methods of space syntax, field investigation, and pedestrian counting. Results revealed that the spatial vitality of USIMA is comprehensively affected by related variables, including accessibility and visibility of spatial configuration, degree of functional mixture, layout of station hall as well as entrances/exits, and the organization of business forms. Finally, improvement suggestions and discussions are put forward from the aspects of entrance/exit layout, spatial organization, and functional distribution, to provide reference for future planning, design and optimization of USIMA with effective vitality.

当今，城市可用土地的紧缺和城市地铁的蓬勃发展，正在推动都市区地下空间（USIMA）的快速发展，它是城市紧凑发展的重要组成部分。空间活力作为地铁相关地下空间布局最重要的评价指标之一，与空间效率息息相关。为此，本文以上海人民广场地铁站（SPSMS）为例，采用空间句法、实地调查、行人计数等方法，考察了USIMA空间活力的可变因素。结果表明，USIMA的空间活力受相关变量的综合影响，包括空间配置的可达性和可见性、功能混合程度、站厅及出入口的布置，业务形式的组织。最后从出入口布局、空间组织、功能分布等方面提出改进建议和探讨，为未来具有有效生命力的USIMA规划、设计和优化提供参考。