[en] In 1920 Prandtl published an analytical solution for the bearing capacity of a centric loaded strip footing on a weightless in-finite half-space, based on a so-called Prandtl-wedge failure mechanism. Meyerhof and Koppejan extended the logarithmic spiral part of the Prandtl-wedge and presented this as the failure mechanism for the tip of a foundation pile in non-cohesive soils. The numerical calculations made in this article show however that the failure zone (plastic zone) below a pile tip, is far wider and deeper than the Prandtl-wedge and that there is failure both in and out of the standard x-y plane, but most of the failure is due to an out-of-plane, circumferential or cleaving failure mechanism. Therefore, this failure mechanism is differ-ent from the Prandtl-wedge failure mechanism. Around the pile tip, there are circular thin zones with no out-of-plane failure. In these thin zones, the tangential (out-of-plane)
Disciplines :
Ingénierie civile
Auteur, co-auteur :
VAN BAARS, Stefan ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Co-auteurs externes :
no
Langue du document :
Anglais
Titre :
The failure mechanism of pile foundations in non-cohesive soils
Date de publication/diffusion :
juin 2018
Nom de la manifestation :
NUMGE 2018 9th European Conference on Numerical Methods in Geotechnical Engineering
Organisateur de la manifestation :
he European Regional Technical Committee ERTC7 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) and the Portuguese Geotechnical Society (SPG)
Lieu de la manifestation :
Porto, Portugal
Date de la manifestation :
25-27 June 2018
Manifestation à portée :
International
Titre de l'ouvrage principal :
Proceedings of NUMGE 2018 9th European Conference on Numerical Methods in Geotechnical Engineering
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