Research Article
Effect of Improvement and Application of Composite Prefabricated Vertical Drain Method in Marine Soft Ground: A Case Study
Table 1
Physical and mechanical parameters of soft marine soil layers.
| | Soil layer code | Natural water content (%) | Unit weight (kN/m3) | Natural porosity ratio | Liquidity index | Compression coefficient (MPa−1) | Compressive modulus (MPa) | Coefficient of vertical drainage consolidation, Cv (cm2/s × 10−3) | Coefficient of horizontal drainage consolidation, Ch (cm2/s × 10−3) | Consolidated undrained strength | | C (kPa) | |
| | ① Mixed backfill soil | 30.5 | 17.7 | 0.965 | 0.8 | 0.413 | 4.69 | — | — | — | — | | ② Silty soft clay | 77.8 | 17.1 | 1.322 | 1.2 | 0.808 | 2.84 | — | — | 15.1 | 15.1 | | ③ Muddy soft clay | 88.7 | 16.2 | 1.864 | 1.9 | 1.286 | 2.50 | 0.59 | 0.535 | 13.78 | 7.8 | | ④ Silty sand | 90.6 | 16.2 | 1.617 | 2.3 | 1.257 | 2.60 | 1.49 | 1.195 | 10.25 | 12.3 |
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