Skip to main content
Erschienen in: Geotechnical and Geological Engineering 5/2020

25.05.2020 | Original Paper

Stability Analysis of Unsaturated Slopes Considering Combined Influences of Strength Non-homogeneity and Non-saturation

verfasst von: Dan-ping Gu, Tong-hua Ling, Fu Huang, Liang Zhang

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 5/2020

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

In the present study, the stability analysis of slopes in four different categories of non-homogeneous and anisotropic soils under various steady flow conditions, i.e., infiltration, evaporation, no suction and no-flow are conducted based on the limit analysis method. The internal energy dissipation owing to soil cohesion considering non-homogeneity and anisotropy, as well as the rate of work done by the apparent cohesion resulting from matric suction are calculated. Thereafter, the analytical expression of the required cohesion and stability number of slope are derived in virtue of the energy balance equation. The optimized solutions are obtained using the optimization program. The results are compared with those of a previous study to verify the present work, and a parametric analysis is conducted to investigate the effects of cohesion strength non-homogeneity and anisotropy of cohesion strength, infiltration rate, slope geometry, and soil type on slope stability. It is found that cohesion non-homogeneity and anisotropy have significant influences on slope stability of slope subjected to the no-suction condition, and variation in steady flow conditions hardly change the effect of slope angle on slope stability. A set of numerical solutions to obtain preliminary designs is presented in Sect. 7.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literatur
Zurück zum Zitat Bao C, Gong B, Zhan L (1998) Properties of unsaturated soils and slope stability of expansive soils. In: Proceedings of the Second International Conference on Unsaturated Soils (UNSAT 98), Beijing Bao C, Gong B, Zhan L (1998) Properties of unsaturated soils and slope stability of expansive soils. In: Proceedings of the Second International Conference on Unsaturated Soils (UNSAT 98), Beijing
Zurück zum Zitat Chen WF (1975) Limit analysis and soil plasticity. Elsevier Scientific Publishing Company, Amsterdam, Netherlands Chen WF (1975) Limit analysis and soil plasticity. Elsevier Scientific Publishing Company, Amsterdam, Netherlands
Zurück zum Zitat Farzaneh O, Askari F (2003) Three-dimensional analysis of nonhomogeneous slopes. J Geotech Geoenviron Eng 129(2):137–145CrossRef Farzaneh O, Askari F (2003) Three-dimensional analysis of nonhomogeneous slopes. J Geotech Geoenviron Eng 129(2):137–145CrossRef
Zurück zum Zitat Fredlund DG, Morgenstern NR, Widger RA (1978) The shear strength of unsaturated soils. Can Geotech J 15(3):313–321CrossRef Fredlund DG, Morgenstern NR, Widger RA (1978) The shear strength of unsaturated soils. Can Geotech J 15(3):313–321CrossRef
Zurück zum Zitat Gao YF, Yang SC, Zhang F, Leshchinsky B (2016) Three-dimensional reinforced slopes: evaluation of required reinforcement strength and embedment length using limit analysis. Geotext Geomembr 44:133–142CrossRef Gao YF, Yang SC, Zhang F, Leshchinsky B (2016) Three-dimensional reinforced slopes: evaluation of required reinforcement strength and embedment length using limit analysis. Geotext Geomembr 44:133–142CrossRef
Zurück zum Zitat Han CY, Chen JJ, Xia XH, Wang JH (2014) Three-dimensional stability analysis of anisotropic and non-homogeneous slopes using limit analysis. J Central South Univ 21(3):1142–1147CrossRef Han CY, Chen JJ, Xia XH, Wang JH (2014) Three-dimensional stability analysis of anisotropic and non-homogeneous slopes using limit analysis. J Central South Univ 21(3):1142–1147CrossRef
Zurück zum Zitat Huang F, Ou RC, Li ZL, Yang XL, Ling TH (2018) Limit analysis for the face stability of a shallow-shield tunnel based on a variational approach to the blow-out failure mode. Int J Geomech 18(6):04018038CrossRef Huang F, Ou RC, Li ZL, Yang XL, Ling TH (2018) Limit analysis for the face stability of a shallow-shield tunnel based on a variational approach to the blow-out failure mode. Int J Geomech 18(6):04018038CrossRef
Zurück zum Zitat Khalili N, Khabbaz MH (1998) A unique relationship for χ for the determination of the shear strength of unsaturated soils. Géotechnique 48(5):681–687CrossRef Khalili N, Khabbaz MH (1998) A unique relationship for χ for the determination of the shear strength of unsaturated soils. Géotechnique 48(5):681–687CrossRef
Zurück zum Zitat Li ZW, Yang XL (2018) Stability of 3D slope under steady unsaturated flow condition. Eng Geol 242:150–159CrossRef Li ZW, Yang XL (2018) Stability of 3D slope under steady unsaturated flow condition. Eng Geol 242:150–159CrossRef
Zurück zum Zitat Li YX, Yao C (2016) Collapse mechanism of deep tunnels with three-centered arch cross section. J Central South Univ 23(12):3293–3301CrossRef Li YX, Yao C (2016) Collapse mechanism of deep tunnels with three-centered arch cross section. J Central South Univ 23(12):3293–3301CrossRef
Zurück zum Zitat Lu N, Godt J (2008) Infinite slope stability under steady unsaturated seepage conditions. Water Resour Res 44(11):W11404CrossRef Lu N, Godt J (2008) Infinite slope stability under steady unsaturated seepage conditions. Water Resour Res 44(11):W11404CrossRef
Zurück zum Zitat Lu N, Likos WJ (2004) Unsaturated soil mechanics. Wiley, New York Lu N, Likos WJ (2004) Unsaturated soil mechanics. Wiley, New York
Zurück zum Zitat Michalowski RL (1997) Stability of uniformly reinforced slopes. J Geotechn Geoenviron Eng 123(6):546–556CrossRef Michalowski RL (1997) Stability of uniformly reinforced slopes. J Geotechn Geoenviron Eng 123(6):546–556CrossRef
Zurück zum Zitat Nian TK, Chen GQ, Luan MT, Zheng DF (2008) Limit analysis of the stability of slopes reinforced with piles against landslide in nonhomogeneous and anisotropic soils. Can Geotech J 45(8):1092–1103CrossRef Nian TK, Chen GQ, Luan MT, Zheng DF (2008) Limit analysis of the stability of slopes reinforced with piles against landslide in nonhomogeneous and anisotropic soils. Can Geotech J 45(8):1092–1103CrossRef
Zurück zum Zitat Oh S, Lu N (2015) Slope stability analysis under unsaturated conditions: case studies of rainfall-induced failure of cut slopes. Eng Geol 184:96–103CrossRef Oh S, Lu N (2015) Slope stability analysis under unsaturated conditions: case studies of rainfall-induced failure of cut slopes. Eng Geol 184:96–103CrossRef
Zurück zum Zitat Vahedifard F, Leshchinsky D, Mortezaei K, Lu N (2016) Effective stress-based limit-equilibrium analysis for homogeneous unsaturated slopes. Int J Geomech 16(6):D4016003CrossRef Vahedifard F, Leshchinsky D, Mortezaei K, Lu N (2016) Effective stress-based limit-equilibrium analysis for homogeneous unsaturated slopes. Int J Geomech 16(6):D4016003CrossRef
Zurück zum Zitat Vanapalli SK, Fredlund DG, Pufahl DE, Clifton AW (1996) Model for the prediction of shear strength with respect to soil suction. Can Geotech J 33(3):379–392CrossRef Vanapalli SK, Fredlund DG, Pufahl DE, Clifton AW (1996) Model for the prediction of shear strength with respect to soil suction. Can Geotech J 33(3):379–392CrossRef
Zurück zum Zitat Vilar OM (2006) A simplified procedure to estimate the shear strength envelope of unsaturated soils. Can Geotech J 43(10):1088–1095CrossRef Vilar OM (2006) A simplified procedure to estimate the shear strength envelope of unsaturated soils. Can Geotech J 43(10):1088–1095CrossRef
Zurück zum Zitat Xu JS, Yang XL (2018) Seismic stability analysis and charts of a 3D rock slope in Hoek-Brown media. Int J Rock Mech Min Sci 112:64–76CrossRef Xu JS, Yang XL (2018) Seismic stability analysis and charts of a 3D rock slope in Hoek-Brown media. Int J Rock Mech Min Sci 112:64–76CrossRef
Zurück zum Zitat Zhang LL, Fredlund DG, Fredlund MD, Wilson GW (2014) Modeling the unsaturated soil zone in slope stability analysis. Can Geotech J 51(12):1384–1398CrossRef Zhang LL, Fredlund DG, Fredlund MD, Wilson GW (2014) Modeling the unsaturated soil zone in slope stability analysis. Can Geotech J 51(12):1384–1398CrossRef
Metadaten
Titel
Stability Analysis of Unsaturated Slopes Considering Combined Influences of Strength Non-homogeneity and Non-saturation
verfasst von
Dan-ping Gu
Tong-hua Ling
Fu Huang
Liang Zhang
Publikationsdatum
25.05.2020
Verlag
Springer International Publishing
Erschienen in
Geotechnical and Geological Engineering / Ausgabe 5/2020
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI
https://doi.org/10.1007/s10706-020-01383-6

Weitere Artikel der Ausgabe 5/2020

Geotechnical and Geological Engineering 5/2020 Zur Ausgabe