Research Article
A Comparative Study of Protective Schemes for Shield Tunneling Adjacent to Pile Groups
Table 2
Physical and mechanical properties of soil.
| | Stratum (Figure 3) | Thickness (m) | r (kN/m3) | e | μ | IP | IL | Es1-2 (MPa) | c (kPa) | φ (°) |
| | Fill | 2 | 19.7 | 0.84 | 0.31 | 13.7 | 0.41 | 4.5 | 5 | 10.1 | | Silty clay (CL-1) | 6 | 19.3 | 0.82 | 0.3 | 14.6 | 0.69 | 5.6 | 14.4 | 15.9 | | Silt (ML) | 8 | 19.7 | 0.72 | 0.25 | 9.6 | 0.47 | 13.7 | 9.6 | 28.3 | | Silty clay (CL-2) | 11 | 18.8 | 0.89 | 0.25 | 14.2 | 0.84 | 4.9 | 15.9 | 20.9 | | Silty clay (CL-3) | 5 | 20.7 | 0.57 | 0.25 | 12.5 | 0.29 | 7.0 | 18.7 | 14.5 | | Silty clay (CL-4) | 8 | 19.8 | 0.73 | 0.32 | 13.9 | 0.54 | 6.8 | 23.6 | 19.4 | | Silty clay (CL-5) | 25 | 20.0 | 0.69 | 0.3 | 13.9 | 0.44 | 7.1 | 24.4 | 20.1 |
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r: unit weight; e: void ratio; μ: Poisson’s ratio; IP: plasticity index; IL: liquid index; Es1-2: compressive modulus; c: cohesion; φ: friction angle.
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