Abstract:

During the excavation of the foundation pits, the protection of the important buildings adjacent to the foundation pits is one of the fundament research subjects. The simulation of and analysis on the  excavation of the deep foundation pit of Yingkoudao station of Tianjin Metro indicates that there exist obvious relationships among the ground surface subsidence, wall deformations and foundation pit heaving. Furthermore, the settlements and deformations of the buildings neighboring to the foundation pit are closely related to the distance between the foundation pit and the buildings. Therefore, such factors as technical feasibility, safety, environment protection, quality, construction duration and economic efficiency should be considered comprehensively during construction so that proper protection measures can be taken.

Key words: FLAC method  , foundation pit of Metro station  , excavation  , building  , deformation