The failure mechanism of pile foundations  in non-cohesive soils

Van Baars, Stefan

Reference : The failure mechanism of pile foundations in non-cohesive soils


	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Civil engineering
	Focus Areas :	Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/35737

Title :	The failure mechanism of pile foundations in non-cohesive soils
Language :	English
Author, co-author :	Van Baars, Stefan [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Publication date :	Jun-2018
Main document title :	Proceedings of NUMGE 2018 9th European Conference on Numerical Methods in Geotechnical Engineering
Peer reviewed :	Yes
On invitation :	No
Audience :	International
Event name :	NUMGE 2018 9th European Conference on Numerical Methods in Geotechnical Engineering
Event date :	25-27 June 2018
Event organizer :	he European Regional Technical Committee ERTC7 of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) and the Portuguese Geotechnical Society (SPG)
Event place (city) :	Porto
Event country :	Portugal
Keywords :	[en] pile foundations ; failure mechanism
Abstract :	[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)
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/10993/35737

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Limited access	paper_final.pdf		Author preprint	594.71 kB	Request a copy
Limited access	Presentation Pile tip failure Porto.pptx		Author preprint	1.89 MB	Request a copy

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