Research Article
Deformation Law of the Diaphragm Wall during Deep Foundation Pit Construction on Lake and Sea Soft Soil in the Yangtze River Delta
Table 1
Physical and mechanical parameters of soft soil in three places.
| Region | Numbering | Soil name | Distribution depth (m) | Natural water content (w/%) | Void ratio (e0) | Internal friction angle (φ/°) | Cohesion (c/kpa) | Plasticity index (ip) |
| Hangzhou | 1 | Muddy clay layer | 6–10 | 38–58 | 1.0–1.6 | 9–15 | 9–17 | 13–23 | Silt, silty clay layer | 5–8 | 2 | Muddy clay layer | 2–10 | 32–46 | 0.9–1.3 | 8–18 | 8–22 | 10–18 | Clay and silty interlayer | 3–4 |
| Shanghai | 3 | Muddy silty clay | 1.8–27 | 36–450 | 1.0–1.4 | 12–28 | 9–14 | 10–17 | 4 | Mucky clay | 9.0–17.3 | 40–60 | 1.1–1.7 | 9–17 | 12–16 | 17–25 |
| Ningbo | 5 | Muddy silty clay | 3.2–16.4 | 34–51 | 1.0–1.4 | 7–28 | 8–34 | 9–17 | 6 | Mucky clay | 2.2–16.5 | 38–58 | 1.1–1.5 | 6–14 | 8–33 | 20–24 |
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