Research Article
Deformation Response and Safety Evaluation of Buildings Affected by Subway-Station Construction
Table 4
Main excavated conditions of the foundation pit.
| Construction step | Construction content | Excavation depth |
| I | Initial ground stress | — | II | Retaining structure construction | — | III | Excavate the first layer of soil and set up the first steel support | 2 m | IV | Excavate the second layer of soil and set up the second steel support | 4.5 m | V | Excavate the third layer of soil and set up the third steel support | 4.5 m | VI | Excavate the fourth layer of soil and set up the fourth steel support | 4.5 m | VII | Excavation to the bottom | 4.5 m |
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