Retaining walls in Dublin Boulder Clay, Ireland

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Title: Retaining walls in Dublin Boulder Clay, Ireland
Authors: Long, Michael (Michael M.)
Brangan, Carl
Menkiti, Christopher O.
Looby, Michael
Casey, Patrick
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Date: Jan-2012
Online since: 2013-03-14T15:07:08Z
Abstract: A good number of deep excavations have been recently completed in Dublin Boulder Clay, Ireland. These have included propped walls up to 25 m deep and permanent cantilevers 7.5 m high. Experience elsewhere in the world was used to design and construct these walls. However, case history data have shown that the behaviour of the walls in Dublin Boulder Clay is very rigid and much stiffer than comparable systems worldwide. It appears this behaviour is due to the inherent natural strength and stiffness of the soil and the slow dissipation of excavation induced depressed pore pressures or suctions. There appears to be scope for developing more efficient designs and in particular for reducing propping requirements. For temporary works, the use of undrained parameters in serviceability limit state calculations together with implementation of the observational approach on site could be considered for future schemes.
Type of material: Journal Article
Publisher: Institution of Civil Engineers
Journal: Proceedings of the ICE - Geotechnical Engineering
Volume: 165
Issue: 4
Start page: 247
End page: 266
Copyright (published version): 2012, ICE Publishing Ltd
Keywords: ExcavationRetaining wallsField testing & monitoring
DOI: 10.1680/geng.9.00091
Language: en
Status of Item: Peer reviewed
Appears in Collections:Civil Engineering Research Collection

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