Research Article
Reinforcement Effects of Isolation Piles on the Adjacent Existing Tunnel in Building Construction
Table 1
Physical and mechanical parameters of the soil.
| Stratum name | Thickness (m) | Compression modulus (MPa) | Poisson’s ratio | Unit weight (kN/m³) | Cohesion (kN/m2) | Internal friction angle (°) |
| Miscellaneous fill | 2.0 | 7.0 | 0.36 | 18.5 | 10 | 15 | Clayey silt I | 5.2 | 7.7 | 0.25 | 21.6 | 21 | 20.7 | Silty clay | 13.2 | 9.7 | 0.26 | 20.7 | 28.7 | 20.6 | Clayey silt II | 1.8 | 18.7 | 0.25 | 20.7 | 30 | 23 | Medium sand | 3.2 | 30.0 | 0.27 | 21.0 | 0 | 30 | Pebbles | — | 55.0 | 0.23 | 22.0 | 0 | 35 |
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