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Numerical modelling of discrete pile rows for slope stability and generic guidance for design / E. A. Ellis in Géotechnique, Vol. 60 N° 3 (Mars 2010) 

Public ISBD [article]  in Géotechnique > Vol. 60 N° 3 (Mars 2010) . - pp. 185–195 Titre : Numerical modelling of discrete pile rows for slope stability and generic guidance for design Type de document : texte imprimé Auteurs : E. A. Ellis, Auteur ; I. K. Durrani, Auteur ; D. J. Reddish, Auteur Année de publication : 2011 Article en page(s) : pp. 185–195 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Piles  Soil–structure  interaction  Slopes Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Discrete (spaced) pile rows are an established method of improving slope stability, or ‘dowelling' an existing slip. The piles predominantly provide horizontal restraint to the potentially unstable mass of the slope. The method becomes more cost effective as the pile spacing increases, but there is also increasing risk that the soil will ‘flow' through the gap between piles, rather than arching across it. Two- and three-dimensional numerical analyses of a generic slope with piles at various locations are undertaken. A simple model of the stabilising force required for a given increase in factor of safety of the slope is then combined with a model of limiting pile row interaction to allow direct estimation of the effect of piles at a particular spacing ratio in improving the factor of safety. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.7.00090 [article] Numerical modelling of discrete pile rows for slope stability and generic guidance for design [texte imprimé] / E. A. Ellis, Auteur ; I. K. Durrani, Auteur ; D. J. Reddish, Auteur . - 2011 . - pp. 185–195. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 60 N° 3 (Mars 2010) . - pp. 185–195 Mots-clés : Piles  Soil–structure  interaction  Slopes Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Discrete (spaced) pile rows are an established method of improving slope stability, or ‘dowelling' an existing slip. The piles predominantly provide horizontal restraint to the potentially unstable mass of the slope. The method becomes more cost effective as the pile spacing increases, but there is also increasing risk that the soil will ‘flow' through the gap between piles, rather than arching across it. Two- and three-dimensional numerical analyses of a generic slope with piles at various locations are undertaken. A simple model of the stabilising force required for a given increase in factor of safety of the slope is then combined with a model of limiting pile row interaction to allow direct estimation of the effect of piles at a particular spacing ratio in improving the factor of safety. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.7.00090