Earth pressure on cantilever walls at design retained heights

Day, R. A. (2001) Earth pressure on cantilever walls at design retained heights. Proceedings of The Institution of Civil Engineers-geotechnical Engineering, 149 3: 167-176. doi:10.1680/geng.2001.149.3.167

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Author Day, R. A.
Title Earth pressure on cantilever walls at design retained heights
Journal name Proceedings of The Institution of Civil Engineers-geotechnical Engineering   Check publisher's open access policy
ISSN 1353-2618
Publication date 2001-07
Sub-type Article (original research)
DOI 10.1680/geng.2001.149.3.167
Open Access Status File (Publisher version)
Volume 149
Issue 3
Start page 167
End page 176
Total pages 10
Editor Andrew Bond
Place of publication London, England
Publisher Thomas Telford Services Ltd
Collection year 2001
Language eng
Subject C1
290805 Geotechnical Engineering
770199 Other
Abstract There are many methods for the analysis and design of embedded cantilever retaining walls. They involve various different simplifications of the pressure distribution to allow calculation of the limiting equilibrium retained height and the bending moment when the retained height is less than the limiting equilibrium value, i.e. the serviceability case. Recently, a new method for determining the serviceability earth pressure and bending moment has been proposed. This method makes an assumption defining the point of zero net pressure. This assumption implies that the passive pressure is not fully mobilised immediately below the excavation level. The finite element analyses presented in this paper examine the net pressure distribution on walls in which the retained height is less, than the limiting equilibrium value. The study shows that for all practical walls, the earth pressure distributions on the front and back of the wall are at their limit values, Kp and K-a respectively, when the lumped factor of safety F-r is less than or equal to2.0. A rectilinear net pressure distribution is proposed that is intuitively logical. It produces good predictions of the complete bending moment diagram for walls in the service configuration and the proposed method gives results that have excellent agreement with centrifuge model tests. The study shows that the method for determining the serviceability bending moment suggested by Padfield and Mair(1) in the CIRIA Report 104 gives excellent predictions of the maximum bending moment in practical cantilever walls. It provides the missing data that have been needed to verify and justify the CIRIA 104 method.
Keyword design methods and aids
retaining walls
codes of practice and standards
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Created: Tue, 14 Aug 2007, 15:06:17 EST