Evaluation of a T-wall section in New Orleans considering 3 D soil-structure interaction / Jinoh Won in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 8 (Août 2011)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 137 N° 8 (Août 2011) . - pp. 731-742 Titre : Evaluation of a T-wall section in New Orleans considering 3 D soil-structure interaction Type de document : texte imprimé Auteurs : Jinoh Won, Auteur ; Sudarshan Adhikari, Auteur ; Chung R. Song, Auteur Année de publication : 2011 Article en page(s) : pp. 731-742 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Hurricane Katrina Levee T-wall Lateral pile FLAC Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : T-walls in New Orleans survived Hurricane Katrina whereas I-walls obviously failed in several sections. However, it is still unclear whether these T-walls truly survived the hurricane with a fair amount of safety margins or barely survived it with undetected damages. The initial design of T-walls was based on simplified loading conditions with limited consideration of soil-structure interaction. In this study, three-dimensional (3D) numerical analyses were conducted, incorporating realistic loading conditions and soil-structure interactions but with time-saving techniques to evaluate the detailed behavior of T-walls. This paper addressed the procedure of innovative 3D numerical analyses and important findings by using special structural elements in FLAC3D. From this study, T-walls were found to have adequate stress levels in H-piles and concrete walls. However, it showed that the major factor that may cause the instability of the T-wall was the slope instability-type unbalanced force. This unbalanced force, however, was counteracted by the batter piles so that the overall stability of the T-wall system could be maintained. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i8/p731_s1?isAuthorized=no [article] Evaluation of a T-wall section in New Orleans considering 3 D soil-structure interaction [texte imprimé] / Jinoh Won, Auteur ; Sudarshan Adhikari, Auteur ; Chung R. Song, Auteur . - 2011 . - pp. 731-742. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 8 (Août 2011) . - pp. 731-742 Mots-clés : Hurricane Katrina Levee T-wall Lateral pile FLAC Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : T-walls in New Orleans survived Hurricane Katrina whereas I-walls obviously failed in several sections. However, it is still unclear whether these T-walls truly survived the hurricane with a fair amount of safety margins or barely survived it with undetected damages. The initial design of T-walls was based on simplified loading conditions with limited consideration of soil-structure interaction. In this study, three-dimensional (3D) numerical analyses were conducted, incorporating realistic loading conditions and soil-structure interactions but with time-saving techniques to evaluate the detailed behavior of T-walls. This paper addressed the procedure of innovative 3D numerical analyses and important findings by using special structural elements in FLAC3D. From this study, T-walls were found to have adequate stress levels in H-piles and concrete walls. However, it showed that the major factor that may cause the instability of the T-wall was the slope instability-type unbalanced force. This unbalanced force, however, was counteracted by the batter piles so that the overall stability of the T-wall system could be maintained. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i8/p731_s1?isAuthorized=no

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