Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Long-term thermo-mechanical behavior of energy pile in dry sand

Abstract : A small-scale pile has been developed in the laboratory to investigate the thermo-mechanical behavior of energy piles subjected to a significant number of thermal cycles. The pile (20 mm external diameter), installed in dry sand, was initially loaded at its head to 0, 20, 40 and 60% of its ultimate bearing capacity (500 N). At the end of each loading step, 30 heating/cooling cycles were applied. The long-term behavior of the pile was observed in terms of head settlement, axial force profile, soil and pile temperature, and stress in soil. The results evidence the irreversible settlement of the pile head induced by thermal cycles under constant load head. In addition, the incremental irreversible settlement that accumulates after each thermal cycle decreases when the number of cycles increases. The evolution of irreversible pile head settlement versus number of cycles can be reasonably predicted by an asymptotic equation.
Type de document :
Article dans une revue
Liste complète des métadonnées
Contributeur : Anh Minh TANG Connectez-vous pour contacter le contributeur
Soumis le : vendredi 28 avril 2017 - 16:29:20
Dernière modification le : samedi 15 janvier 2022 - 03:49:59
Archivage à long terme le : : samedi 29 juillet 2017 - 13:32:08


AGEO-D-16-00226_R1 (dragged).p...
Fichiers produits par l'(les) auteur(s)




van Tri Nguyen, Anh Minh A.M. Tang, Jean-Michel Pereira. Long-term thermo-mechanical behavior of energy pile in dry sand. Acta Geotechnica, Springer Verlag, 2017, ⟨10.1007/s11440-017-0539-z⟩. ⟨hal-01515976⟩



Consultations de la notice


Téléchargements de fichiers