关键词: 预制装配建造技术, 装配式地铁车站, 装配整体式结构, 全预制装配式结构, 叠合装配式结构

Abstract: China is proactively promoting construction industrialization. In this paper, the construction technology for prefabricated metro stations overseas is first analyzed and the research on and application of the prefabricated construction technology to metro stations in major cities of China in the past decade is summarized. A detailed elaboration is provided on the "fully prefabricated structure" typically applied by Changchun metro and further developed by Qingdao metro and Shenzhen metro. Through cases of Wuzhong Road station in Shanghai, Renjiazhuang station of Jinan metro, and Dingxiang Park station of Harbin metro, the "fully prefabricated structure" is briefly introduced. The mixed structure applied in Shangchong Park station of Guangzhou metro is also introduced. Then the structural features of different types of prefabricated stations are analyzed, and a sitespecific decisionmaking mechanism is proposed. The technical routes and engineering schemes for constructing prefabricated stations must be based on features of the underground works. The advantages of the prefabricated construction technology must be fully exploited to improve the standardization and industrialization level. Efforts should be made to increase the structural prefabrication rate, develop highend construction equipment, and improve construction efficiency and social benefits. It is also pointed out that the prefabricated station technology has just started in China, and the whole technical system needs to be improved and the technical standards need to be established. Besides, the reasons for the high construction costs of prefabricated metro stations in the current environment are analyzed, and emphasis is put on several paths to effectively reducing project costs, including cutting taxes, optimizing technical schemes and engineering designs, maximizing engineering applications, reducing amortization costs, etc. In general, prefabricated metro stations in China have experienced different phases: developed from nothing and from a single construction mode to multiple modes. Prefabricated station technology is currently advancing towards the concept and mode of industrialization. However, the development of the prefabricated construction technology still has a long way to go. It needs the concerns from and the coeffort of the entire industry and the society.

Key words: prefabricated construction technology, prefabricated metro station, integral prefabricated structure, fully prefabricated structure; composite prefabricated structure