Yield design of reinforced earth walls by a homogenization method / P. De Buhan in Géotechnique, Vol. 39 N°2 (Juin 1989)  

Public ISBD [article]  inGéotechnique > Vol. 39 N°2 (Juin 1989) . - pp. 189 –201 Titre : Yield design of reinforced earth walls by a homogenization method Type de document : texte imprimé Auteurs : P. De Buhan, Auteur ; R. Mangiavacchi, Auteur ; R. Nova, Auteur Année de publication : 2007 Article en page(s) : pp. 189 –201 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Stability Failure Limit state design Reinforced earth Retaining walls Anisotropy Résumé : The increasing use of the reinforced earth technique in geotechnical engineering requires the development of reliable and practical yield design methods for reinforced earthworks. The method presented in this Paper originates from the idea that, from a macroscopic point of view, reinforced earth can be regarded as a homogeneous material with anisotropic properties, owing to the existence of privileged orientations due to the reinforcing strips. The strength criterion of such an equivalent material, which can be determined theoretically starting from the strength data of the reinforced earth components, turns out to be of the anisotropic frictional type. This criterion is applied to the stability analysis of a reinforced earth wall, making use of the yield design kinematic approach with rigid block failure mechanisms. The theoretical estimates obtained for the collapse height of the wall through this method appear to be in better agreement with experimental results than the values derived from classical design methods. Despite some limitations outlined in the Paper, the proposed yield design homogenization procedure may become an appropriate design method for reinforced soil structures in general. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.2.189 [article] Yield design of reinforced earth walls by a homogenization method [texte imprimé] / P. De Buhan, Auteur ; R. Mangiavacchi, Auteur ; R. Nova, Auteur . - 2007 . - pp. 189 –201. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 39 N°2 (Juin 1989) . - pp. 189 –201 Mots-clés : Stability Failure Limit state design Reinforced earth Retaining walls Anisotropy Résumé : The increasing use of the reinforced earth technique in geotechnical engineering requires the development of reliable and practical yield design methods for reinforced earthworks. The method presented in this Paper originates from the idea that, from a macroscopic point of view, reinforced earth can be regarded as a homogeneous material with anisotropic properties, owing to the existence of privileged orientations due to the reinforcing strips. The strength criterion of such an equivalent material, which can be determined theoretically starting from the strength data of the reinforced earth components, turns out to be of the anisotropic frictional type. This criterion is applied to the stability analysis of a reinforced earth wall, making use of the yield design kinematic approach with rigid block failure mechanisms. The theoretical estimates obtained for the collapse height of the wall through this method appear to be in better agreement with experimental results than the values derived from classical design methods. Despite some limitations outlined in the Paper, the proposed yield design homogenization procedure may become an appropriate design method for reinforced soil structures in general. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.2.189

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