A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability

Stanislav Sysala; Eva Hrubešová; Zdeněk Michalec; Franz Tschuchnigg

doi:10.1007/978-3-031-12851-6_52

A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability

Stanislav Sysala^*, Eva Hrubešová, Zdeněk Michalec, Franz Tschuchnigg

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

The shear strength reduction method (SSRM) is a standard method in slope stability enabling to determine the factor of safety and related failure zones. In case of the non-associated Mohr-Coulomb model, the method can oscillate with respect to the refinement of a finite element mesh. To suppress this drawback, the non-associated model is approximated by the associated one such that the strength parameters are reduced by using a function depending on a scalar factor and on the effective friction and dilatancy angles. This modification (MSSRM) can be easily implemented in commercial codes like Plaxis or Comsol Multiphysics. Next, an optimization approach to the modified SSRM (OPT-MSSRM) is introduced. It is shown that the optimization problem is well-defined and can be analyzed by variational principles. For its solution, a regularization method is combined with mesh adaptivity and implemented in Matlab. The SSRM, MSSRM and OPT-MSSRM methods are compared on numerical examples representing a case study of a real heterogeneous slope.

Original language	English
Title of host publication	Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3
Editors	Marco Barla, Alessandra Insana, Alice Di Donna, Donatella Sterpi
Pages	441-448
Number of pages	8
Volume	3
ISBN (Electronic)	978-3-031-12851-6
DOIs	https://doi.org/10.1007/978-3-031-12851-6_52
Publication status	Published - 2023
Event	16th International Conference on Computer Methods and Advances in Geomechanics: IACMAG 2022 - Hybrider Event, Torino, Italy Duration: 30 Aug 2022 → 2 Sept 2022 https://iacmag2022.org/

Publication series

Name	Lecture Notes in Civil Engineering
Volume	288 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	16th International Conference on Computer Methods and Advances in Geomechanics
Country/Territory	Italy
City	Hybrider Event, Torino
Period	30/08/22 → 2/09/22
Internet address	https://iacmag2022.org/

Keywords

Convex optimization
Davis approach
Finite element method
Shear strength reduction method
Slope stability

ASJC Scopus subject areas

Civil and Structural Engineering

Access to Document

10.1007/978-3-031-12851-6_52

Cite this

Sysala, S., Hrubešová, E., Michalec, Z., & Tschuchnigg, F. (2023). A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability. In M. Barla, A. Insana, A. Di Donna, & D. Sterpi (Eds.), Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3 (Vol. 3, pp. 441-448). (Lecture Notes in Civil Engineering; Vol. 288 LNCE). https://doi.org/10.1007/978-3-031-12851-6_52

A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability. / Sysala, Stanislav; Hrubešová, Eva; Michalec, Zdeněk et al.
Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3. ed. / Marco Barla; Alessandra Insana; Alice Di Donna; Donatella Sterpi. Vol. 3 2023. p. 441-448 (Lecture Notes in Civil Engineering; Vol. 288 LNCE).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Sysala, S, Hrubešová, E, Michalec, Z & Tschuchnigg, F 2023, A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability. in M Barla, A Insana, A Di Donna & D Sterpi (eds), Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3. vol. 3, Lecture Notes in Civil Engineering, vol. 288 LNCE, pp. 441-448, 16th International Conference on Computer Methods and Advances in Geomechanics, Hybrider Event, Torino, Italy, 30/08/22. https://doi.org/10.1007/978-3-031-12851-6_52

Sysala S, Hrubešová E, Michalec Z, Tschuchnigg F. A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability. In Barla M, Insana A, Di Donna A, Sterpi D, editors, Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3. Vol. 3. 2023. p. 441-448. (Lecture Notes in Civil Engineering). Epub 2022 Jul 31. doi: 10.1007/978-3-031-12851-6_52

Sysala, Stanislav ; Hrubešová, Eva ; Michalec, Zdeněk et al. / A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability. Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3. editor / Marco Barla ; Alessandra Insana ; Alice Di Donna ; Donatella Sterpi. Vol. 3 2023. pp. 441-448 (Lecture Notes in Civil Engineering).

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A Rigorous Variant of the Shear Strength Reduction Method and Its Usage in Slope Stability

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