Research on Exploitation and Utilization of Sustainable Developmental City Underground Space: Case Study of the Underground Pedestrian System of Toronto

In the early 20th century, Europeans and Americans had built on the city underground space, of which urban rail transit development is one of the major sections in underground space. However, underground space was developed in different way in cities as represented by Toronto, Canada with special underground pedestrian system. The Toronto’s Downtown Underground Pedestrian System (PATH) was taken as an example, the historical background and causes, construction process, spatial characters, planning framework and the existing questions are discussed in detail in this paper. This study provides concrete case reference for development and management of pedestrian space in Chinese cities. 关键词: 多伦多;PATH 地下步行系统;总体规划