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Values of different parameters of the problem_
| Parameters | References values | Variations in studied values |
|---|---|---|
| Upstream friction angle (φ) | 25° | 25, 26, 27, 28, 29, 30 |
| Core cohesion (CN) | 30 kPa | 5, 10, 20, 30, 50, 70 |
| Upstream unit weight (γ) | 20 kN/m3 | 17, 18, 19, 20, 21, 22 |
| Dam height (H) | 10 m | 10, 15, 20, 30, 40, 50 |
| Slope angle (β) | 21° | 21, 30, 40, 60, 70, 75 |
| Upstream sloping core (α1) | 31.5° | 31.5, 40, 45, 60, 70, 80 |
| Water level height is taken in the worst case | 8 m | |
| Seismic coefficient spreads in the range | [0, 0.3] |
Comparison of Kc at critical state of the different methods_
| DYNANSTA | PLAXIS | ABAQUS | GEOSTAB | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| φ(°) | γ (kN/m3) | CN(kPa) | K c | Fd | K c | Fd | Δ | Kc | Fd | Δ | Kc | Fd | Δ |
| 5 | 0.063 | 1 | - | - | - | - | - | - | - | < 1 | - | ||
| 10 | 0.075 | 1 | - | - | - | - | - | - | 0.05 | 1.024 | −2.5 | ||
| 20 | 0.089 | 1 | 0.15 | 1.202 | 6.08 | 0.191 | 1.139 | 10.18 | 0.3 | 1.042 | 21.08 | ||
| 30 | 0.092 | 1 | 0.15 | 1.202 | 5.80 | 0.252 | 1.165 | 16 | 0.401 | 1.12 | 30.90 | ||
| 50 | 0.111 | 1 | 0.18 | 1.094 | 6.94 | 0.317 | 1.247 | 20.64 | 0.55 | 1.051 | 43.94 | ||
| 70 | 0.1 | 1.05 | 0.18 | 1.141 | 8 | 0.382 | 1.31 | 28.2 | 0.558 | 1.056 | 45.8 | ||
| 25 | 0.092 | 1 | 0.15 | 1.202 | 5.80 | 0.252 | 1.165 | 16 | 0.401 | 1.12 | 30.90 | ||
| 26 | 0.115 | 0.953 | 0.15 | 1.181 | 3.5 | 0.255 | 1.169 | 14 | 0.45 | 1.039 | 33.5 | ||
| 27 | 0.125 | 0.938 | 0.15 | 1.192 | 2.5 | 0.257 | 1.173 | 13.2 | 0.521 | 1.014 | 39.6 | ||
| 28 | 0.149 | 1.1 | 0.15 | 1.475 | 0.1 | 0.261 | 1.179 | 11.2 | 0.532 | 0.972 | 38.3 | ||
| 29 | 0.15 | 1.15 | 0.18 | 1.108 | 3.01 | 0.269 | 1.183 | 11.9 | 0.5 | 0.994 | 35 | ||
| 30 | 0.15 | 1.2 | 0.19 | 1.071 | 4 | 0.273 | 1.188 | 12.3 | 0.5 | 1.025 | 35 | ||
| 17 | [0, 0.3] | < 1 | 0.15 | 1.198 | - | - | - | - | 0.1 | 1.063 | - | ||
| 18 | [0, 0.3] | < 1 | 0.2 | 1.073 | - | - | - | - | 0.108 | 1.07 | - | ||
| 19 | [0, 0.3] | < 1 | 0.2 | 1.044 | - | - | - | - | 0.121 | 1.009 | - | ||
| 20 | 0.092 | 1 | 0.15 | 1.202 | 5.80 | 0.252 | 1.165 | 16 | 0.401 | 1.12 | 30.90 | ||
| 21 | 0.087 | 1 | 0.15 | 1.194 | 6.28 | 0.253 | 1.182 | 16.58 | 0.445 | 1.109 | 35.78 | ||
| 22 | 0.117 | 1 | 0.2 | 1.072 | 8.35 | 0.255 | 1.19 | 13.85 | 0.473 | 1.11 | 35.65 | ||