Research Article
A Case Study on Field Monitoring Analysis of Deep Foundation Pit in Soft Soils
Table 1
Physical and mechanical parameters.
| | Soil classification | Layer thickness, (m) | Unit weight, γ (kN/m3) | Cohesion, c (kPa) | Friction angle, φ (°) | Characteristic value of subsoil bearing capacity, fa (kPa) | Permeability coefficients, k (cm/s) | Liquidity index, IL | Constrained modulus, Es (MPa) |
| | Backfill soils | 1.0 | 19.5 | 10.0 | 22.1 | 100 | 1.9 × 10−7 | 0.75 | 4.49 | | Silty clays | 1.5 | 19.6 | 20.4 | 25.9 | 120 | 2.6 × 10−7 | 0.71 | 5.87 | | Sandy silts | 2.1 | 19.4 | 22.2 | 40.6 | 135 | 7.1 × 10−6 | 0.87 | 7.80 | | Sandy silts | 1.3 | 19.8 | 31.3 | 39.1 | 130 | 0.9 × 10−5 | 0.82 | 13.69 | | Silty clays | 5.3 | 19.5 | 22.6 | 33.1 | 110 | 1.4 × 10−6 | 0.95 | 6.72 | | Silty clays | 3.5 | 20.0 | 15.4 | 29.2 | 120 | 0.9 × 10−6 | 0.67 | 4.84 | | Silty clays | 2.1 | 20.1 | 27.9 | 24.5 | 140 | 1.4 × 10−7 | 0.58 | 5.35 | | Silty clays | 3.2 | 20.2 | 30.9 | 25.0 | 150 | 1.6 × 10−7 | 0.57 | 5.60 | | Silty sands | 5.7 | 20.7 | 27.8 | 30.3 | 210 | 1.1 × 10−5 | 0.53 | 14.34 | | Silty clays | 6.6 | 20.1 | 37.3 | 19.1 | 160 | 1.9 × 10−7 | 0.44 | 5.82 | | Sandy silts | 7.1 | 20.5 | 28.5 | 40.7 | 220 | 1.1 × 10−5 | 0.48 | 15.29 | | Silty clays | 2.7 | 20.3 | 32.3 | 25.9 | 200 | 0.5 × 10−5 | 0.47 | 6.50 | | Sandy silts | 7.7 | 20.5 | 25.1 | 41.5 | 260 | 1.0 × 10−5 | 0.60 | 13.07 |
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