关键词: 运营地铁车站, 深基坑, 变形, 有限元

Abstract: The risk of deep excavation near the subway station is high, the in-situ stress will be changed induced by the deep excavation. The hazards are mainly reflected in the deformation and leakage, and further affect the safety and structural durability of subway lines. A three dimensional integrated geotechnical-structural model is established by using finite element method. The effect of the excavation of the deep excavation in newly-built metro station is analyzed. The analysis results show that, although the subway station far from the excavation, the structure of subway station is greatly affected by the excavation, because the foundation structure is more adjacent. Although, the accessory structure of the subway station near the excavation, the structure is less affected by the excavation, because it is far from the deep excavation. The horizontal and vertical displacement of subway station is caused by the deep excavation, due to the ground wall and reinforcement, the displacement of subway station is controlled.

Key words: Operating Metro Station, Deep Excavation, Deformation, Finite Element Method