Optimization variant of the shear strength reduction method and its usage for stability of embankments with unconfined seepage

0571945 - ÚGN 2024 RIV GB eng J - Článek v odborném periodiku
Sysala, Stanislav - Tschuchnigg, F. - Hrubešová, E. - Michalec, Zdeněk
Optimization variant of the shear strength reduction method and its usage for stability of embankments with unconfined seepage.
Computers and Structures. Roč. 281, June 2023 (2023), č. článku 107033. ISSN 0045-7949. E-ISSN 1879-2243
Grant CEP: GA ČR(CZ) GA19-11441S
Institucionální podpora: RVO:68145535
Klíčová slova: geotechnical stability assessment * computational plasticity * unconfined seepage * shear strength reduction method * optimization * mesh adaptivity
Obor OECD: Applied mathematics
Impakt faktor: 4.7, rok: 2022
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0045794923000639

In this paper, an optimization variant of the shear strength reduction method is introduced and used for the solution of embankment stability problems with unconfined seepage. The optimization framework is based on approximations of non-associated Mohr-Coulomb plastic models with associated ones, especially by using various Davis' approaches. Next, the finite element method is considered and mesh adaptive solution concepts are developed for both the unconfined seepage and stability problems. In-house codes in Matlab are used for their implementation. Finally, two numerical examples inspired by geotechnical practice are investigated in order to demonstrate the accuracy of the optimization framework and to evaluate three different Davis' approaches. The results are compared with commercial codes in Plaxis and Comsol Multiphysics.
Trvalý link: https://hdl.handle.net/11104/0345443