Documents disponibles écrits par cet auteur

Assessment of the undrained response of sands under limited and complete liquefaction / Mohamed Ashour in Journal of geotechnical and geoenvironmental engineering, Vol. 135 N° 11 (Novembre 2009) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 135 N° 11 (Novembre 2009) . - pp. 1772–1776 Titre : Assessment of the undrained response of sands under limited and complete liquefaction Type de document : texte imprimé Auteurs : Mohamed Ashour, Auteur ; Gary Norris, Auteur ; Tung Nguyen, Auteur Année de publication : 2009 Article en page(s) : pp. 1772–1776 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Soil-liquefactionDrainageSandSoil  typeStress  strain  relationsAssessment Résumé : The technique presented deals with the assessment, based on drained test behavior and formulation, of the undrained postcyclic stress-strain behavior of sands under limited or complete (full) liquefaction and its associated strength. At present, there is no particular procedure that allows assessment of such undrained postcyclic behavior that could develop full (pore-water pressure ratio, ru=1 ) or limited (ru<1) liquefaction. The prediction of the undrained postliquefaction (full or limited liquefaction) response presented here is based on basic properties of sand such as its relative density (Drc) [or (N1)60 blowcount], the effective angle of internal friction (φ) , the roundness of the sand grains (ρ) , and the drained axial strain at 50% stress level (ε50) . The technique presented accounts for the excess pore-water pressure induced by cyclic loading (Δuc) and the postcyclic excess pore-water pressure generated under undrained monotonic loading (Δud). En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000114 [article] Assessment of the undrained response of sands under limited and complete liquefaction [texte imprimé] / Mohamed Ashour, Auteur ; Gary Norris, Auteur ; Tung Nguyen, Auteur . - 2009 . - pp. 1772–1776. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 135 N° 11 (Novembre 2009) . - pp. 1772–1776 Mots-clés : Soil-liquefactionDrainageSandSoil  typeStress  strain  relationsAssessment Résumé : The technique presented deals with the assessment, based on drained test behavior and formulation, of the undrained postcyclic stress-strain behavior of sands under limited or complete (full) liquefaction and its associated strength. At present, there is no particular procedure that allows assessment of such undrained postcyclic behavior that could develop full (pore-water pressure ratio, ru=1 ) or limited (ru<1) liquefaction. The prediction of the undrained postliquefaction (full or limited liquefaction) response presented here is based on basic properties of sand such as its relative density (Drc) [or (N1)60 blowcount], the effective angle of internal friction (φ) , the roundness of the sand grains (ρ) , and the drained axial strain at 50% stress level (ε50) . The technique presented accounts for the excess pore-water pressure induced by cyclic loading (Δuc) and the postcyclic excess pore-water pressure generated under undrained monotonic loading (Δud). En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000114