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The effect of pile shape on the horizontal shaft stress during installation in sand

The effect of pile shape on the horizontal shaft stress during installation in sand
The effect of pile shape on the horizontal shaft stress during installation in sand

The shaft friction of displacement piles in sand depends, amongst other things, on the change in the horizontal stresses during installation. This is influenced by many factors, but there have been few studies examining the influence of pile shape. This paper examines the horizontal stress changes due to the pile shape, especially from the effect of the cross-sectional geometry-referred to here as shape effects. Experiments were preformed in the UWA drum centrifuge, comparing the horizontal stresses acting on 7 different shaped piles during installation into medium dense sand. The measured profiles of horizontal stress demonstrate a surprisingly high variation in horizontal stress due to the shape effect. The governing mechanism behind this phenomenon is discussed, and a back-analysis based on arching theory is presented.

835-840
CRC Press
Taenaka, S.
0e1b2f94-4a47-4ce6-83c8-5b5341627785
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Randolph, M.F.
75caa33a-e630-4ae8-84cd-758797bf9633
Springman, Sarah
Taenaka, S.
0e1b2f94-4a47-4ce6-83c8-5b5341627785
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Randolph, M.F.
75caa33a-e630-4ae8-84cd-758797bf9633
Springman, Sarah

Taenaka, S., White, D.J. and Randolph, M.F. (2010) The effect of pile shape on the horizontal shaft stress during installation in sand. Springman, Sarah (ed.) In Research and Innovation Using Geotechnical Physical Modelling : Proceedings of the 7th International Conference on Physical Modelling in Geotechnics 2010, ICPMG 2010. vol. 2, CRC Press. pp. 835-840 .

Record type: Conference or Workshop Item (Paper)

Abstract

The shaft friction of displacement piles in sand depends, amongst other things, on the change in the horizontal stresses during installation. This is influenced by many factors, but there have been few studies examining the influence of pile shape. This paper examines the horizontal stress changes due to the pile shape, especially from the effect of the cross-sectional geometry-referred to here as shape effects. Experiments were preformed in the UWA drum centrifuge, comparing the horizontal stresses acting on 7 different shaped piles during installation into medium dense sand. The measured profiles of horizontal stress demonstrate a surprisingly high variation in horizontal stress due to the shape effect. The governing mechanism behind this phenomenon is discussed, and a back-analysis based on arching theory is presented.

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More information

Published date: 2010
Venue - Dates: 7th International Conference on Physical Modelling in Geotechnics 2010, ICPMG 2010, Zurich, Switzerland, 2010-06-28 - 2010-07-01

Identifiers

Local EPrints ID: 419893
URI: http://eprints.soton.ac.uk/id/eprint/419893
PURE UUID: ea96ae64-4cfc-4bf4-b362-44f2bac8ee84
ORCID for D.J. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 23 Apr 2018 16:30
Last modified: 05 Nov 2019 01:26

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