Skip to main content
Top
Published in: Bulletin of Engineering Geology and the Environment 2/2024

01-02-2024 | Original Paper

Stress field and stability calculation method for unloading slope considering the influence of terrain

Authors: Xu Cheng, Hua Tang, Hui Qin, Zhenjun Wu, Yachen Xie

Published in: Bulletin of Engineering Geology and the Environment | Issue 2/2024

Log in

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

The initial terrain of a slope has a significant impact on the stability and stress state during excavation. In this study, the theory of elastic stress solutions under concentrated loads at the top of a wedge-shaped body was employed to develop a method for calculating the slope stress field and stability, considering terrain effects during excavation. The rationality of this method was validated by comparing the changes in the safety factor, stress of the sliding surface, and position of the sliding surface using the limit equilibrium method (LEM) and finite element method (FEM). The research findings indicated the following: (1) A sliding surface search method was proposed, leading to the development of a slope unloading stress analysis method (USAM) considering the influence of terrain. This method allows for the rapid and straightforward determination of the stress field and safety factor of the excavated slope simultaneously. (2) When the USAM was applied to analyze slopes with small heights, the safety factor tended to be slightly larger. This phenomenon can be attributed to the assumption made in the elastic stress solution theory for wedge tops subjected to concentrated loads. However, this assumption does not significantly affect the stability analysis of high slopes. (3) The calculated sliding surface stresses and potential sliding surface positions were close to those derived using the strength reduction method. This study introduces a new perspective for slope stability analyses and stress field solutions that consider terrain effects.

Dont have a licence yet? Then find out more about our products and how to get one now:

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!

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!

Appendix
Available only for authorised users
Literature
go back to reference Ai X, Leng WM, Xu F, Zhang QS, Zhai B (2020) Graphic method for computing horizontal additional stress in a new prestressed subgrade. Rock Soil Mech 41:253–266 Ai X, Leng WM, Xu F, Zhang QS, Zhai B (2020) Graphic method for computing horizontal additional stress in a new prestressed subgrade. Rock Soil Mech 41:253–266
go back to reference Gao JM, Lin DZ (2001) Wedge stress theory and its application in engineering. China Coal Industry Publishing House, Beijing Gao JM, Lin DZ (2001) Wedge stress theory and its application in engineering. China Coal Industry Publishing House, Beijing
go back to reference Griffiths DV, Lane PA (2001) Slope stability analysis by finite elements. Geotechnique-London 51:653–654CrossRef Griffiths DV, Lane PA (2001) Slope stability analysis by finite elements. Geotechnique-London 51:653–654CrossRef
go back to reference Lei J, Xiao SG (2019) Stability analysis method for anchored slopes considering stress dispersion effect in sliding mass due to anchor tensile forces. Chin J Geotech Eng 41:1724–1730 Lei J, Xiao SG (2019) Stability analysis method for anchored slopes considering stress dispersion effect in sliding mass due to anchor tensile forces. Chin J Geotech Eng 41:1724–1730
go back to reference Li Z, Zhu YP, Yu J (2008) Calculation methods for active slope reinforcement based on stress control in critical slip surface. Chinese Journal of Rock Mechanics and Engineering: 979–989 Li Z, Zhu YP, Yu J (2008) Calculation methods for active slope reinforcement based on stress control in critical slip surface. Chinese Journal of Rock Mechanics and Engineering: 979–989
go back to reference Li Z, Yu J (2015) Stability analysis of slope under complex stress conditions based on multi-population genetic algorithm. Rock Soil Mech 36:1488–1495 Li Z, Yu J (2015) Stability analysis of slope under complex stress conditions based on multi-population genetic algorithm. Rock Soil Mech 36:1488–1495
go back to reference Tan LJ, Zhang HN, Sheng HW, Xia KZ (2014) Mechanism of bedding-slip failure of gently inclined rock slope due to hydraulic pressure. J Yangtze River Sci Res Inst 31:47–53 Tan LJ, Zhang HN, Sheng HW, Xia KZ (2014) Mechanism of bedding-slip failure of gently inclined rock slope due to hydraulic pressure. J Yangtze River Sci Res Inst 31:47–53
go back to reference Wang DQ, Zhu YP (2014) Additional stress apply to analyzing the stability of prestressed anchor support. Eng Mech 31:196–202 Wang DQ, Zhu YP (2014) Additional stress apply to analyzing the stability of prestressed anchor support. Eng Mech 31:196–202
go back to reference Wu SC, LmQ H, Li ZP, Guo C, Zhou JX (2018) Discussion on the methods for determining slope safety factor based on stress state of the sliding surface. J China Univ Min Technol 47:719–726 Wu SC, LmQ H, Li ZP, Guo C, Zhou JX (2018) Discussion on the methods for determining slope safety factor based on stress state of the sliding surface. J China Univ Min Technol 47:719–726
go back to reference Xu ZL (2016) Elastic mechanics. Higher Education Press, Beijing Xu ZL (2016) Elastic mechanics. Higher Education Press, Beijing
go back to reference Yang KB, Zhu YP (2021) Soil slope stress state and stability analysis based on unloading effect of slope surfaces. Eng Mech 38:95–104 Yang KB, Zhu YP (2021) Soil slope stress state and stability analysis based on unloading effect of slope surfaces. Eng Mech 38:95–104
Metadata
Title
Stress field and stability calculation method for unloading slope considering the influence of terrain
Authors
Xu Cheng
Hua Tang
Hui Qin
Zhenjun Wu
Yachen Xie
Publication date
01-02-2024
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 2/2024
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-024-03557-5

Other articles of this Issue 2/2024

Bulletin of Engineering Geology and the Environment 2/2024 Go to the issue