Application and Research Progress of Prefabricated Assembly Technology in Underground Engineering

In the context of the China’s vigorous promotion of construction industrialization, prefabricated assembly construction technology has received extensive attention and development. Compared with a large number of research and application of above-ground buildings, the application and development of prefabricated assembly construction technology in underground space still has great potential. At first, the Citespace software is used to visually analyze the literature related to underground assembly from 2000 to 2022. Then, taking three typical underground space buildings of underground comprehensive pipe gallery, subway station and tunnel as examples, and the research and application status of prefabricated construction technology in underground engineering in China are summerized. Five key research contents of prefabricated construction of underground engineering are proposed, including the assembly technology of prefabricated lining, the mechanical performance of prefabricated structures, the connection joints of prefabricated components, the seismic performance of prefabricated structures, and the waterproof performance of prefabricated structures. Finally, five research trends of prefabricated structures in underground spaces are summarized to provide references for the popularization and application of prefabricated technology in underground engineering.