Research Article
Numerical Analysis of Damaged River Embankment during the 2011 Tohoku Earthquake Using a Multiphase-Coupled FEM Analysis Method
Table 2
Soil parameters for damaged river embankment.
| | Soil parameters | | B1s/B1c | B3s/B2c | Foundation |
| | Initial void ratio | | 1.159 | 1.100 | 1.456 | | Density | | 1.73 | 1.74 | 1.66 | | Compression index | | 0.0500 | 0.0500 | 0.5930 | | Swelling index | | 0.0057 | 0.0057 | 0.027 | | Normalized initial elastic shear modulus | | 340 | 1020 | 255 | | Water permeability (m/s) | | 1.11 × 10−6 | 2.66 × 10−7 | 8.10 × 10−9 | | Quasi-overconsolidation ratio | OCR | 1.2 | 1.2 | 1.0 | | Stress ratio at phase transformation | | 0.891 | 0.891 | 0.891 | | Stress ratio at failure | | 1.229 | 1.229 | 0.891 | | Hardening parameter | | 5000 | 2000 | 100 | | Hardening parameter | | 100 | 100 | 40 | | Hardening parameter | | 0 | 0 | 10 | | 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 | — | | Viscoplastic parameter | | — | — | 24.68 | | Viscoplastic parameter (1/s) | | | | 1.00 × 10−6 | | Viscoplastic parameter (1/s) | | | | 3.83 × 10−7 | | Hardening parameter | | 0.0 | 0.0 | 5.9 | | Hardening parameter | | 0.0 | 0.0 | 1.8 | | Hardening parameter | | 50.11 | 41.6 | — | | Elastic shear modulus parameter | | 1.0 | 1.0 | — | | Elastic shear modulus parameter | | 1.0 | 1.0 | — | | Elastic shear modulus parameter | | 1.0 | 1.0 | — | | Anisotropy disappearance parameter | | 2000 | 2000 | — | | Nonassociativity flow rule | | 0.02 | 0.02 | — | | Stiffness recovery rate | | 2000 | 2000 | — |
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This parameter is not used in dynamic analysis. |
