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Numerical modelling of the trap door problem / N. C. Koutsabeloulis in Géotechnique, Vol. 39 N°1 (Mars 1989) 

Public ISBD [article]  in Géotechnique > Vol. 39 N°1 (Mars 1989) . - pp. 77 –89 Titre : Numerical modelling of the trap door problem Type de document : texte imprimé Auteurs : N. C. Koutsabeloulis, Auteur ; D. V. Griffiths, Auteur Année de publication : 2007 Article en page(s) : pp. 77 –89 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Trap  door  problem  Tunnel  design  Finite  element  analysis  Anchor  design Résumé : The trap door problem is a useful model for providing a clearer understanding of the stress distribution around civil engineering structures such as anchor plates and tunnels. The passive mode can be used either to compute the uplift force of anchors or any buried structure which may be idealized as an anchor; the active mode can be used to compute the gravitational flow of a granular material between vertical walls or the soil reaction curve for tunnel design. Both modes of displacement are modelled numerically in this Paper using the finite element method. The results are presented in the form of influence charts, which may be used for both the passive and active modes to provide failure loads for a range of geometries and soil properties, using non-dimensionalized parameters. The use of these equations is compared with results obtained from other sources using both physical and numerical models. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.1.77 [article] Numerical modelling of the trap door problem [texte imprimé] / N. C. Koutsabeloulis, Auteur ; D. V. Griffiths, Auteur . - 2007 . - pp. 77 –89. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 39 N°1 (Mars 1989) . - pp. 77 –89 Mots-clés : Trap  door  problem  Tunnel  design  Finite  element  analysis  Anchor  design Résumé : The trap door problem is a useful model for providing a clearer understanding of the stress distribution around civil engineering structures such as anchor plates and tunnels. The passive mode can be used either to compute the uplift force of anchors or any buried structure which may be idealized as an anchor; the active mode can be used to compute the gravitational flow of a granular material between vertical walls or the soil reaction curve for tunnel design. Both modes of displacement are modelled numerically in this Paper using the finite element method. The results are presented in the form of influence charts, which may be used for both the passive and active modes to provide failure loads for a range of geometries and soil properties, using non-dimensionalized parameters. The use of these equations is compared with results obtained from other sources using both physical and numerical models. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.1.77