Serviceability limit state check in reinforced soil design

Paul McCombie, Mike Dobie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Published design methods for reinforced soil structures concentrate almost entirely on analysis of the ultimate limit state.
Most design guides give general requirements that settlements and deformations should not lead to a serviceability limit state, but little
guidance is given as to how such assessments should be made. This paper describes a method of analysis based on the use of multiple twopart
wedge mechanisms to predict a load distribution for each layer of reinforcement. This is then combined with information from isochronous load-strain curves for the reinforcement, in order to predict the likely distribution of post-construction strain. BS 8006-1:2010 provides guidance on post-construction strain limits, which are then compared to the predictions from the two-part wedge analysis. This provides an additional verification of the design layout established by the ultimate limit state check. The method is illustrated by examining the behaviour of an 8m high trial reinforced soil retaining wall built in Japan in 1995, and monitored for 8 years. Comparison of the actual wall performance with predictions made using the two-part wedge method gives good agreement.
Original languageEnglish
Title of host publicationGeotechnical Engineering for Transportation Infrastructure
Subtitle of host publicationProceedings of the Sixteenth European Conference on Soil Mechanics and Geotechnical Engineering, 2015 - Volume 3 - Development
EditorsM. G. Winter, D. M. Smith, P. J. L. Eldred, D. G. Toll
PublisherThomas Telford (ICE Publishing)
Pages1415-1420
Number of pages6
ISBN (Print)9780727760678
DOIs
Publication statusPublished - 31 Aug 2015
EventXVI European Conference on Soil Mechanics and Geotechnical Engineering - Edinburgh, UK United Kingdom
Duration: 13 Sep 201517 Sep 2015

Conference

ConferenceXVI European Conference on Soil Mechanics and Geotechnical Engineering
CountryUK United Kingdom
CityEdinburgh
Period13/09/1517/09/15

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  • Cite this

    McCombie, P., & Dobie, M. (2015). Serviceability limit state check in reinforced soil design. In M. G. Winter, D. M. Smith, P. J. L. Eldred, & D. G. Toll (Eds.), Geotechnical Engineering for Transportation Infrastructure : Proceedings of the Sixteenth European Conference on Soil Mechanics and Geotechnical Engineering, 2015 - Volume 3 - Development (pp. 1415-1420). Thomas Telford (ICE Publishing). https://doi.org/10.1680/ecsmge.60678.