|
Titre :
|
Evaluation of a T-wall section in New Orleans considering 3 D soil-structure interaction (2011)
|
|
Auteurs :
|
Jinoh Won, Auteur ;
Sudarshan Adhikari, Auteur ;
Chung R. Song, Auteur
|
|
Type de document :
|
Article : texte imprimé
|
|
Dans :
|
Journal of geotechnical and geoenvironmental engineering (Vol. 137 N° 8, Août 2011)
|
|
Article en page(s) :
|
pp. 731-742
|
|
Note générale :
|
Géotechnique
|
|
Langues :
|
Anglais
|
|
Index. décimale :
|
624.1 (Infrastructures.Ouvrages en terre. Fondations. Tunnels)
|
|
Tags :
|
Hurricane Katrina Levee T-wall Lateral pile FLAC
|
|
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
|
