Gajo, A. and Smith, C.C. orcid.org/0000-0002-0611-9227 (2018) Combined rupture mechanisms in shallow foundations. Canadian Geotechnical Journal, 55 (6). pp. 829-838. ISSN 0008-3674
Abstract
Conventional ultimate limit state (ULS) shallow foundation design is typically based on a simplified analysis that fails to consider the possible existence of a combined structural and geotechnical failure, which is shown here to significantly affect the limit load. Neglecting this occurrence may lead to unsafe design, whereas a full analysis can be beneficial for the dimensioning. With the emphasis on separate SLS and ULS design in modern design codes such as Eurocode 7 (EN 1997-1, 2004), this paper explores unsafe loading scenarios and the benefits to be gained from a rigorous ULS design based on combined failure. For the sake of simplicity, a long foundation slab subjected to three different loading conditions is analysed using elastic, elasto-plastic and rigid-plastic methods and the results compared for a range of foundation strengths and stiffnesses. It is found that the limit load may be significantly influenced by plastic hinges in the structure and for each load condition it is possible to derive a curve relating ultimate load to plastic bending moment representing the ultimate limit state of the foundation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 NRC Research Press. This is an author produced version of a paper subsequently published in Canadian Geotechnical Journal. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 25 Oct 2017 13:34 |
Last Modified: | 12 Apr 2024 15:27 |
Status: | Published |
Publisher: | NRC Research Press |
Refereed: | Yes |
Identification Number: | 10.1139/cgj-2016-0324 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:123009 |