Research Article
Effects of Pit-Bottom-Soil Reinforcement on the Deformation of Subway Deep Foundation Pits Based on an Improved Model
Table 3
Mechanical parameters of soil in the static penetration test.
| | Geotechnical name | Taper tip resistance qc (MPa) | Side friction fs (kPa) | Friction ratio (%) | Cone-tip ratio penetration resistance Ps (MPa) |
| | Miscellaneous fill | 0.00 | 0.04 | - | - | | Muddy soil | 0.42 | 6.79 | 16.17 | 0.46 | | Silt and sand | 0.98 | 14.37 | 14.66 | 1.08 | | Silt and sand | 1.06 | 16.03 | 15.12 | 1.17 | | Silty clay | 2.00 | 27.40 | 13.70 | 2.20 | | Coarse medium sand | 4.90 | 8.10 | 1.65 | 5.39 | | Cement-soil | 5.7 | 89.1 | 15.47 | 5.61 |
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Note. CPT was used to perform diversion hole construction in miscellaneous fill; hence, no data of this soil layer were obtained.
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