Geotechnical analysis of a retaining wall in weak rock
Geotechnical analysis of a retaining wall in weak rock
The determination of realistic values of stiffness and in-situ horizontal stress is challenging in softer materials, but in weak rocks where discontinuities are typically present it is particularly difficult. Such difficulties were encountered during the site investigation for the construction of the A444 Coventry North-South road retaining structures, where the in-situ lateral stress and stiffness profiles of the weathered sandstones and mudstone were determined using a range of investigation techniques.
A section of retaining wall incorporating a stabilising base was monitored during construction, and further investigation of the weak rock was undertaken using geophysical techniques. Aspects of the observed performance of the retaining wall during construction were analysed using a continuum finite-element method to provide a computed stiffness and initial horizontal stress profile. The results from these analyses are compared with the site characterisation data.
retaining walls, rock mechanics
13-26
Richards, D.J.
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Clayton, C.R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Hayward, T.
819b5976-4ec7-4dfa-95e3-077683605a7c
2004
Richards, D.J.
a58ea81e-443d-4dab-8d97-55d76a43d57e
Clayton, C.R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Hayward, T.
819b5976-4ec7-4dfa-95e3-077683605a7c
Richards, D.J., Clayton, C.R.I., Powrie, W. and Hayward, T.
(2004)
Geotechnical analysis of a retaining wall in weak rock.
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 157 (1), .
(doi:10.1680/geng.157.1.13.36281).
Abstract
The determination of realistic values of stiffness and in-situ horizontal stress is challenging in softer materials, but in weak rocks where discontinuities are typically present it is particularly difficult. Such difficulties were encountered during the site investigation for the construction of the A444 Coventry North-South road retaining structures, where the in-situ lateral stress and stiffness profiles of the weathered sandstones and mudstone were determined using a range of investigation techniques.
A section of retaining wall incorporating a stabilising base was monitored during construction, and further investigation of the weak rock was undertaken using geophysical techniques. Aspects of the observed performance of the retaining wall during construction were analysed using a continuum finite-element method to provide a computed stiffness and initial horizontal stress profile. The results from these analyses are compared with the site characterisation data.
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Published date: 2004
Keywords:
retaining walls, rock mechanics
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Local EPrints ID: 39394
URI: http://eprints.soton.ac.uk/id/eprint/39394
ISSN: 1353-2618
PURE UUID: 75191f8c-d5d2-428a-a0bc-127fb197367b
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Date deposited: 28 Jun 2006
Last modified: 16 Mar 2024 03:12
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Author:
T. Hayward
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