Research Article
Investigation on Parameter Calibration Method and Mechanical Properties of Root-Reinforced Soil by DEM
Table 2
DEM simulation scheme on pull-out test.
| Simulate group | Root dimensions | Root physical para. | Soil physical para. | Length (m) | Diameter (m) | Eroot (MPa) | Troot (MPa) | fricroot (no unit) | Esoil (MPa) | fricsoil (no unit) | σ′vertical (kPa) |
| (1) Soil friction | 0.08 | 0.004 | 1e11 | 1e7 | 0.0 | 2.5e8 | 0.3 | 25 | 0.08 | 0.004 | 1e11 | 1e7 | 0.0 | 2.5e8 | 0.6 | 25 | 0.08 | 0.004 | 1e11 | 1e7 | 0.0 | 2.5e8 | 0.9 | 25 |
| (2) Root friction | 0.08 | 0.004 | 1e11 | 1e7 | 0.1 | 2.5e8 | 0.6 | 25 | 0.08 | 0.004 | 1e11 | 1e7 | 0.3 | 2.5e8 | 0.6 | 25 | 0.08 | 0.004 | 1e11 | 1e7 | 0.6 | 2.5e8 | 0.6 | 25 |
| (3) Vertical pressure | 0.08 | 0.004 | 1e11 | 1e7 | 0.0 | 2.5e8 | 0.3 | 50 | 0.08 | 0.004 | 1e11 | 1e7 | 0.0 | 2.5e8 | 0.3 | 75 | 0.08 | 0.004 | 1e11 | 1e7 | 0.0 | 2.5e8 | 0.3 | 100 |
| (4) Root modulus | 0.08 | 0.004 | 5e11 | 1e7 | 0.0 | 2.5e8 | 0.3 | 25 | 0.08 | 0.004 | 5e10 | 1e7 | 0.0 | 2.5e8 | 0.3 | 25 | 0.08 | 0.004 | 1e10 | 1e7 | 0.0 | 2.5e8 | 0.3 | 25 |
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