Research Article
Numerical Analysis of Damaged River Embankment during the 2011 Tohoku Earthquake Using a Multiphase-Coupled FEM Analysis Method
Table 1
Material parameters of Naruse sand.
| | Soil parameters | | Elastoplastic model [24] | Extended elastoplastic model |
| | Initial void ratio | | 1.159 | 1.159 | | Density | | 1.73 | 1.73 | | Compression index | | 0.0500 | 0.0500 | | Swelling index | | 0.0057 | 0.0057 | | Normalized initial elastic shear modulus | | 340 | 340 | | Water permeability (m/s) | | 1.13 × 10−4 | 1.13 × 10−4 | | Quasi-overconsolidation ratio | OCR | 1.2 | 1.2 | | Stress ratio at phase transformation | | 0.891 | 0.891 | | Stress ratio at failure | | 1.229 | 1.229 | | Hardening parameter | | 5000 | 5000 | | Hardening parameter | | 100 | 100 | | Hardening parameter | Cf | 0 | 0 | | Dilatancy coefficient | | 1.0 | 1.0 | | Dilatancy coefficient | | 6.0 | 6.0 | | Reference value of plastic strain | | 0.001 | 0.001 | | Reference value of elastic strain | | 0.003 | 0.003 | | Hardening parameter | | — | 0.0 | | Hardening parameter | | — | 0.0 | | Hardening parameter | | — | 40.47 | | Elastic shear modulus parameter | | — | 1.0 | | Elastic shear modulus parameter | | — | 1.0 | | Elastic shear modulus parameter | | — | 1.0 | | Anisotropy disappearance parameter | | 2000.0 | 2000.0 | | Nonassociativity flow rule | | — | Parametric study | | Stiffness recovery rate | | — | 2000 |
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This parameter is not used in the parametric study. |
