The shaft capacity of CFA piles in sand

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Title: The shaft capacity of CFA piles in sand
Authors: Gavin, Kenneth
Cadogan, David
Casey, Patrick
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Date: Jun-2009
Online since: 2010-08-27T11:25:31Z
Abstract: This paper presents the results of a series of field experiments performed to study the development of shaft resistance on Continuous Flight Auger piles installed in sand. The test piles were instrumented in order to separate the shaft and base resistance, and to allow the determination of the distribution of shaft resistance along the pile shaft. The tests highlighted the importance of accurate calculation of the shaft resistance for non-displacement piles. At a typical maximum allowable pile head settlement of 25 mm, more than 71 % of the pile resistance was provided by shaft friction. Conventional methods of estimating shaft resistance were assessed. It was found that methods which incorporated parameters directly interpreted from in-situ test results provided the most consistent estimates. In the final section, differences between the shaft resistances mobilised on displacement and non-displacement piles are considered.
Funding Details: Other funder
Type of material: Journal Article
Publisher: American Society of Civil Engineers
Journal: Journal of Geotechnical and Geoenvironmental Engineering
Volume: 135
Issue: 6
Start page: 790
End page: 798
Copyright (published version): 2009 ASCE
Keywords: Field experimentsNon-displacement piles
Subject LCSH: Piling (Civil engineering)
Shafts (Excavations)--Testing
DOI: 10.1061/(ASCE)GT.1943-5606.0000073
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Language: en
Status of Item: Peer reviewed
Appears in Collections:Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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