Research Article
Optimization Analysis of Deformation of Underlying Tunnel in Dewatering and Excavation of Phreatic Aquifer
Table 5
Calculation parameters of structural elements.
| | Name | Density (g·m−3) | Elastic modulus (GPa) | Poisson ratio | Cross-sectional area (m2) | Moment of inertia (m4) |
| | Tunnel lining | 2.50 | 30 | 0.22 | | | | Foundation pit floor | 2.71 | 35.5 | 0.24 | | | | Concrete support | 2.50 | 30 | 0.18 | 7.2 × 10−1 | 8.7 × 10−3 | | Steel support | 7.86 | 200 | 0.24 | 3.0 × 10−3 | 2.6 × 10−3 | | Diaphragm wall | 2.50 | 30 | 0.16 | | | | Uplift pile | 2.50 | 30 | 0.21 | 5.0 × 10−1 | 2.0 × 10−2 |
|
|
