Documents disponibles écrits par cet auteur

Relationship between texas cone penetrometer tests and axial resistances of drilled shafts socketed in clay shale and limestone / Moon S. Nam in Journal of geotechnical and geoenvironmental engineering, Vol. 136 N° 8 (Août 2010) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 8 (Août 2010) . - pp. 1161-1165 Titre : Relationship between texas cone penetrometer tests and axial resistances of drilled shafts socketed in clay shale and limestone Type de document : texte imprimé Auteurs : Moon S. Nam, Auteur ; Cumaraswamy Vipulanandan, Auteur Année de publication : 2010 Article en page(s) : pp. 1161-1165 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Rock  socket  Drilled  shafts  Axial  resistances  Texas  cone  penetration  test Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Modern methods for designing drilled shafts in soft rock require knowledge of the compressive strength and modulus of the rock. However, rock jointing at many sites prohibits the recovery of samples of sufficient length and integrity to test rock cores in either unconfined or triaxial compression tests. Since rational design procedures usually require values of compressive strength, surrogate methods must be employed to estimate the compressive strength of the rock. The surrogate methods considered in this study was Texas cone penetrometer tests, and performed at several sites in North Central Texas. In order to develop the relationships between Texas cone penetrations and side and base resistances of rock socketed drilled shafts, three field load tests were conducted. Based on the field study and literature reviews, a relationship between Texas cone penetration tests and axial resistances of rock socketed drilled shafts was proposed. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i8/p1161_s1?isAuthorized=no [article] Relationship between texas cone penetrometer tests and axial resistances of drilled shafts socketed in clay shale and limestone [texte imprimé] / Moon S. Nam, Auteur ; Cumaraswamy Vipulanandan, Auteur . - 2010 . - pp. 1161-1165. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 136 N° 8 (Août 2010) . - pp. 1161-1165 Mots-clés : Rock  socket  Drilled  shafts  Axial  resistances  Texas  cone  penetration  test Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : Modern methods for designing drilled shafts in soft rock require knowledge of the compressive strength and modulus of the rock. However, rock jointing at many sites prohibits the recovery of samples of sufficient length and integrity to test rock cores in either unconfined or triaxial compression tests. Since rational design procedures usually require values of compressive strength, surrogate methods must be employed to estimate the compressive strength of the rock. The surrogate methods considered in this study was Texas cone penetrometer tests, and performed at several sites in North Central Texas. In order to develop the relationships between Texas cone penetrations and side and base resistances of rock socketed drilled shafts, three field load tests were conducted. Based on the field study and literature reviews, a relationship between Texas cone penetration tests and axial resistances of rock socketed drilled shafts was proposed. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v136/i8/p1161_s1?isAuthorized=no

Roughness and unit side resistances of drilled shafts socketed in clay shale and limestone / Moon S. Nam in Journal of geotechnical and geoenvironmental engineering, Vol. 134 n°9 (Septembre 2008) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°9 (Septembre 2008) . - pp. 1272–1279 Titre : Roughness and unit side resistances of drilled shafts socketed in clay shale and limestone Type de document : texte imprimé Auteurs : Moon S. Nam, Auteur ; Cumaraswamy Vipulanandan, Auteur Année de publication : 2008 Article en page(s) : pp. 1272–1279 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Roughness  Drilling  Drilled  shafts  Clays  Rocks  Limestone  Shale Résumé : Rock socketed drilled shafts are being used increasingly to support heavily loaded structures. Rock sockets provide resistance to the load through a combination of side and base resistances. In this study, the effect of drilling tools such as an auger and a core barrel on the unit side resistance was investigated. A total of four field studies were performed on clay shale (compressive strength of 1–2MPa ) and limestone (compressive strength of 10MPa ). Borehole roughnesses produced by the different types of drilling tools in clay shale and limestone were measured using a laser borehole roughness profiler developed in this study to measure roughness to 0.5mm in the boreholes. Based on the results of this study, it was observed that the drilling tools developed different socket roughnesses, which in turn affected the side resistances of the rock socketed drilled shafts. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A9%2812 [...] [article] Roughness and unit side resistances of drilled shafts socketed in clay shale and limestone [texte imprimé] / Moon S. Nam, Auteur ; Cumaraswamy Vipulanandan, Auteur . - 2008 . - pp. 1272–1279. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°9 (Septembre 2008) . - pp. 1272–1279 Mots-clés : Roughness  Drilling  Drilled  shafts  Clays  Rocks  Limestone  Shale Résumé : Rock socketed drilled shafts are being used increasingly to support heavily loaded structures. Rock sockets provide resistance to the load through a combination of side and base resistances. In this study, the effect of drilling tools such as an auger and a core barrel on the unit side resistance was investigated. A total of four field studies were performed on clay shale (compressive strength of 1–2MPa ) and limestone (compressive strength of 10MPa ). Borehole roughnesses produced by the different types of drilling tools in clay shale and limestone were measured using a laser borehole roughness profiler developed in this study to measure roughness to 0.5mm in the boreholes. Based on the results of this study, it was observed that the drilling tools developed different socket roughnesses, which in turn affected the side resistances of the rock socketed drilled shafts. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A9%2812 [...]