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Shakedown approaches to rut depth prediction in low-volume roads / Fatima Allou in Journal of engineering mechanics, Vol. 136 N° 11 (Novembre 2010) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 136 N° 11 (Novembre 2010) . - pp.1422-1434 Titre : Shakedown approaches to rut depth prediction in low-volume roads Type de document : texte imprimé Auteurs : Fatima Allou, Auteur ; Christophe Petit, Auteur ; Cyrille Chazallon, Auteur Année de publication : 2011 Article en page(s) : pp.1422-1434 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Elastoplasticity  Triaxial  tests  Full-scale  tests  Highways  and  roads  Predictions. Résumé : Rutting, due to permanent deformations of unbound materials, is one of the principal damage modes of low traffic pavements. Flexible pavement design methods remain empirical; they do not take into account the inelastic behavior of pavement materials and do not predict the rutting under cyclic loading. A finite-element program, based on the concept of the shakedown theory developed by Zarka for metallic structures under cyclic loadings, has been used to estimate the permanent deformations of unbound granular materials subjected to traffic loading. Based on repeated load triaxial tests, a general procedure has been developed for the determination of the material parameters of the constitutive model. Finally, the results of a finite-element modeling of the long-term behavior of a flexible pavement with the simplified method are presented and compared to the results of a full-scale flexible pavement experiment performed by Laboratoire Central des Ponts et Chaussées. Finally, the calculation of the rut depth evolution with time is carried out. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v136/i11/p1422_s1?isAuthorized=no [article] Shakedown approaches to rut depth prediction in low-volume roads [texte imprimé] / Fatima Allou, Auteur ; Christophe Petit, Auteur ; Cyrille Chazallon, Auteur . - 2011 . - pp.1422-1434. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 136 N° 11 (Novembre 2010) . - pp.1422-1434 Mots-clés : Elastoplasticity  Triaxial  tests  Full-scale  tests  Highways  and  roads  Predictions. Résumé : Rutting, due to permanent deformations of unbound materials, is one of the principal damage modes of low traffic pavements. Flexible pavement design methods remain empirical; they do not take into account the inelastic behavior of pavement materials and do not predict the rutting under cyclic loading. A finite-element program, based on the concept of the shakedown theory developed by Zarka for metallic structures under cyclic loadings, has been used to estimate the permanent deformations of unbound granular materials subjected to traffic loading. Based on repeated load triaxial tests, a general procedure has been developed for the determination of the material parameters of the constitutive model. Finally, the results of a finite-element modeling of the long-term behavior of a flexible pavement with the simplified method are presented and compared to the results of a full-scale flexible pavement experiment performed by Laboratoire Central des Ponts et Chaussées. Finally, the calculation of the rut depth evolution with time is carried out. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v136/i11/p1422_s1?isAuthorized=no