Table 1. Soil distribution and mechanical properties.
| Soil layer | Thickness (m) | soil depth(m) | Saturated bulk density (kN/m3) | Compression modulus (MPa) | Internal friction angle (°) | Cohesion (kPa) | Characteristic value of pile side resistance (kPa) |
|---|---|---|---|---|---|---|---|
| Filled soil layer | 3.7–3.8 | 0–3.8 | 19 | 35 | 30 | 0 | 0 |
| Soft soil layer (silt) | 14.0–16.0 | 17.7–19.8 | 18 (8) | 3 | 5 | 7 | 12 |
| Silty clay layer | 3.0 | 20.7–24.6 | 18 (8) | 5 | 15 | 15 | 57 |
| Strongly weathered sandy soil layer | 20 | 41–45 | 18 (8) | 80 | 45 | 3 | 150 |