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Field experiments at three sites to investigate the effects of age on steel piles driven in sand

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Title: Field experiments at three sites to investigate the effects of age on steel piles driven in sand
Authors: Carroll, R
Carotenuto, P
Dano, C
Salama, I
Silva, M
Rimoy, S
Gavin, K
Jardine, R
Item Type: Journal Article
Abstract: This paper investigates the influences that steel type, in situ soil properties, water table depth, pile diameter, roughness and driving procedures have on the ageing behaviour of piles driven in sand. Tension tests have been performed on 51 open-ended steel micro-piles, with 48 to 60 mm outside diameter, driven at well-established research sites at Larvik in Norway, Dunkirk in France and Blessington in Ireland to better understand the processes that control axial capacity set-up trends in the field. Mild steel, stainless and galvanised steel micro-piles were driven and left to age undisturbed for periods of between 2 h and 696 days before being subjected to first-time axial tension load tests. In addition to reporting and interpreting these experiments, further investigations of the sites’ geotechnical profiles are reported, including new piezocone and seismic cone penetration soundings as well as laboratory tests. Integration with earlier ageing studies at the same sites with larger (340 to 508 mm outside diameter) open-ended steel piles driven to 7 to 20 m embedments and experiments that varied the piles’ initial surface roughness shows that corrosion, pile scale, roughness, the bonding of soil particles and the driving process can all be highly significant. New insights are gained into the mechanisms that control the axial capacity of piles driven in sand.
Issue Date: Jun-2020
Date of Acceptance: 1-May-2019
URI: http://hdl.handle.net/10044/1/70774
DOI: 10.1680/jgeot.17.p.185
ISSN: 0016-8505
Publisher: Thomas Telford
Start Page: 469
End Page: 489
Journal / Book Title: Géotechnique
Volume: 70
Issue: 6
Copyright Statement: © 2019 ICE Publishing, all rights reserved.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
The Royal Society
Funder's Grant Number: EP/D506387/1
NA160438
Keywords: Geological & Geomatics Engineering
0905 Civil Engineering
0907 Environmental Engineering
0914 Resources Engineering and Extractive Metallurgy
Publication Status: Published
Online Publication Date: 2019-05-07
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering
Geotechnics