Implementation of the c-phi reduction procedure in Cast3M code for calculating the stability of retaining walls in the layered backfill with strength parameters reduction by elasto-plastic finite element analysis using fields data

Zoa Ambassa; Jean Chills Amba; Nandor Tamaskovics

doi:10.5802/crmeca.230

Implementation of the c-phi reduction procedure in Cast3M code for calculating the stability of retaining walls in the layered backfill with strength parameters reduction by elasto-plastic finite element analysis using fields data
[Mise en œuvre de la procédure c-phi de réduction des paramètres de résistance dans le code Cast3M pour le calcul de la stabilité des murs de soutènement dans le remblai stratifié par analyse elements finis elasto-plastique en utilisant les données de terrain]

Zoa Ambassa ^1,² ; Jean Chills Amba ^1,² ; Nandor Tamaskovics ³

¹ Laboratory of Energy Modeling Materials and Methods (E3M), National Higher Polytechnic School of Douala, University of Douala, P.O. Box: 2701 Douala, Cameroon
² Department of Civil Engineering, National Higher Polytechnic School of Douala, University of Douala, Cameroon
³ TU Bergakademie Freiberg, Geotechnical Institute, Chair of Soil Mechanics and Ground Engineering, Gustav-Zeuner-Straße 1/Room 014/Rom 016, Germany

Comptes Rendus. Mécanique, Volume 351 (2023), pp. 485-523.

Résumé
Abstract

Cet article présente une implémentation de la procédure de réduction c-phi dans le code aux éléments finis Cast3M. Cette procédure est d’abord validée sur un exemple simple de capacité portante d’une semelle filante, puis utilisée pour évaluer le facteur de stabilité d’une structure géotechnique composée de deux niveaux de remblai retenus par deux murs de soutènement, avec une route construite sur le dessus du second remblai. Les résultats de la procédure de réduction c-phi pour la construction du premier et du second remblai sont également comparés à d’autres méthodes d’analyse classiquement utilisées en géotechnique et aux résultats des calculs par éléments finis.

This paper presents an implementation of the c-phi reduction procedure in the finite element code Cast3M. This procedure is first validated on a simple example of bearing capacity of a strip footing and then used to evaluate the stability factor of a geotechnical structure composed of two levels of backfill retained by two retaining walls, with a road built on the top of the second backfill. The results of the c-phi reduction procedure for the construction of first and second backfill are also compared to other analysis methods classically used in geotechnics and to the results of finite element calculations.

Reçu le : 2022-12-05
Révisé le : 2023-01-27
Accepté le : 2023-10-09
Publié le : 2023-12-04

DOI : 10.5802/crmeca.230

Keywords: Implementation, C-phi reduction procedure, Code Cast3M, Stability factor, Geotechnical structure, Finite element calculations
Mot clés : Mise en œuvre, Procédure de réduction c-phi, Code Cast3M, Facteur de stabilité, Structure géotechnique, Calculs par éléments finis

Affiliations des auteurs :

Zoa Ambassa ^{1, 2} ; Jean Chills Amba ^{1, 2} ; Nandor Tamaskovics ³

Licence :

CC-BY 4.0

Droits d'auteur : Les auteurs conservent leurs droits

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     author = {Zoa Ambassa and Jean Chills Amba and Nandor Tamaskovics},
     title = {Implementation of the c-phi reduction procedure in {Cast3M} code for calculating the stability of retaining walls in the layered backfill with strength parameters reduction by elasto-plastic finite element analysis using fields data},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {485--523},
     publisher = {Acad\'emie des sciences, Paris},
     volume = {351},
     year = {2023},
     doi = {10.5802/crmeca.230},
     language = {en},
}

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Zoa Ambassa; Jean Chills Amba; Nandor Tamaskovics. Implementation of the c-phi reduction procedure in Cast3M code for calculating the stability of retaining walls in the layered backfill with strength parameters reduction by elasto-plastic finite element analysis using fields data. Comptes Rendus. Mécanique, Volume 351 (2023), pp. 485-523. doi : 10.5802/crmeca.230. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.230/

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