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Second-Order Work Criterion in the Stability Analysis of an Earth Dam Subjected to Seepage

Krzysztof Sternik

Krzysztof Sternik

Department of Geotechnics and Roads, Faculty of Civil Engineering, Silesian University of TechnologyGliwice,
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Sternik, Krzysztof
  
01 oct. 2023
Second-Order Work Criterion in the Stability Analysis of an Earth Dam Subjected to Seepage's Cover Image
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Catégorie d'article: Special Issue 19th KKMGiIG
Publié en ligne: 01 oct. 2023
Pages: 253 - 261
Reçu: 14 janv. 2023
Accepté: 23 juin 2023
DOI: https://doi.org/10.2478/sgem-2023-0015
Mots clés
© 2023 Krzysztof Sternik, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Procedure of determination of the boundary of instability domain: a) triaxial compression in Rendulic plane, b) plane strain conditions.
Procedure of determination of the boundary of instability domain: a) triaxial compression in Rendulic plane, b) plane strain conditions.

Figure 2:

Instability domains (shaded areas) in simulations of triaxial compression and extension for dense sand described by incrementally non-linear model [7].
Instability domains (shaded areas) in simulations of triaxial compression and extension for dense sand described by incrementally non-linear model [7].

Figure 3:

Geometrical model of the earth dam and subgrade.
Geometrical model of the earth dam and subgrade.

Figure 4:

Hyperbolic relationship ɛ1-q for virgin triaxial compression.
Hyperbolic relationship ɛ1-q for virgin triaxial compression.

Figure 5:

Yield surface for Hardening Soil model.
Yield surface for Hardening Soil model.

Figure 6:

Variations of hydraulic boundary conditions over time.
Variations of hydraulic boundary conditions over time.

Figure 7:

Variations of the phreatic surface location over time.
Variations of the phreatic surface location over time.

Figure 8:

Changes of safety factor at different locations of the phreatic surface.
Changes of safety factor at different locations of the phreatic surface.

Figure 9:

Maps of the normalised second-order work at different levels of the phreatic surface.
Maps of the normalised second-order work at different levels of the phreatic surface.

Soil parameters assumed in the analysis_

Parameter earth dam (mSa) subgrade (Si)
Eurref [MPa] 100 30
σref [kPa] 100 100
νur [−] 0.2 0.3
m [−] 0.5 0.9
σL [kPa] 10 10
E50ref [MPa] 30 10
ϕ [°] 35 25
c [kPa] 0 10
ψ [°] 5 10
Eoed [MPa] 38 10
OCR [−] 3 3
k [m/s] 10−6 10−7
Sr [−] 0 0.2
α [1/m] 10 1
K0 [−] 0.8 0.92
Langue:
Anglais
Périodicité:
4 fois par an
Sujets de la revue:
Géosciences, Géosciences, autres, Sciences des matériaux, Matériaux composites, Matériaux poreux, Physique, Mécanique et dynamique des fluides
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