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Parametric study of the earth dam's behaviour subjected to earthquake

H. Ayeche
H. Ayeche
, 
Z. Zitouni
Z. Zitouni
, 
A. Limam
A. Limam
 oraz 
A. Bouafia
A. Bouafia
   | 18 lis 2022
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Article Category: Original Study
Data publikacji: 18 lis 2022
Zakres stron: 267 - 281
Otrzymano: 14 sty 2022
Przyjęty: 03 lip 2022
DOI: https://doi.org/10.2478/sgem-2022-0017
Słowa kluczowe
© 2022 H. Ayeche et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1

Earth dam.
Earth dam.

Figure 2

Model geometry and finite element mesh of the embankment with sloping core zone.
Model geometry and finite element mesh of the embankment with sloping core zone.

Figure 3

Effect of the internal friction angle.
Effect of the internal friction angle.

Figure 4

Effect of the internal friction angle with PLAXIS and GEOSTAB.
Effect of the internal friction angle with PLAXIS and GEOSTAB.

Figure 5

Effect of the seismic coefficient.
Effect of the seismic coefficient.

Figure 6

Effect of the seismic coefficient with PLAXIS and GEOSTAB.
Effect of the seismic coefficient with PLAXIS and GEOSTAB.

Figure 7

Effect of the core cohesion.
Effect of the core cohesion.

Figure 8

Effect of the core cohesion with PLAXIS and GEOSTAB.
Effect of the core cohesion with PLAXIS and GEOSTAB.

Figure 9

Effect of the slope angle.
Effect of the slope angle.

Figure 10

Effect of the slope angle with PLAXIS and GEOSTAB.
Effect of the slope angle with PLAXIS and GEOSTAB.

Figure 11

Effect of the upstream sloping core.
Effect of the upstream sloping core.

Figure 12

Effect of the upstream sloping core with PLAXIS and GEOSTAB.
Effect of the upstream sloping core with PLAXIS and GEOSTAB.

Figure 13

Effect of dam's height.
Effect of dam's height.

Figure 14

Effect of dam's height with PLAXIS and GEOSTAB.
Effect of dam's height with PLAXIS and GEOSTAB.

Figure 15

Effect of the upstream unit's weight.
Effect of the upstream unit's weight.

Figure 16

Effect of the upstream unit's weight with PLAXIS and GEOSTAB.
Effect of the upstream unit's weight with PLAXIS and GEOSTAB.

Figure 17

Kc critical state values according to the different variations.
Kc critical state values according to the different variations.

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
eISSN:
2083-831X
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
Geosciences, other, Materials Sciences, Composites, Porous Materials, Physics, Mechanics and Fluid Dynamics
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