Simulating geobag revetment failure processes

Leila Khajenoori, Grant Wright, Martin Crapper

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

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Abstract

An experimental and numerical study has been carried out to help develop design guidelines for the construction of low-cost river bank protection using geobags. Building upon previous work, a 1:10 scale model is tested in a laboratory flume, comparing two different construction methods (running bond and stack bond), subjected to three different water depths. It is found that whilst the failure pattern is highly dependent on water depth, the construction method has no noticeable impact, and it is concluded that the dominating factor is the friction between individual geobags, which itself is dependent on bag overlap rather than specific construction method. A simple Discrete Element Method (DEM) model is constructed using the LIGGGHTS open source software with drag and lift models applied to a multisphere simulation of the laboratory model geobags. It is found that despite its simplicity this DEM model could reproduce the failure pattern of revetments very well, and thus has potential for future use in developing design guidelines aimed at the developing world.
Original languageEnglish
Title of host publicationProceedings of the 37th IAHR World Congress 'Learning from the Past for the Future' 13-18 August 2017, Kuala Lumpur, Malaysia
PublisherIAHR
Pages139-145
Number of pages7
Publication statusPublished - 14 Aug 2017
Event37th IAHR World Congress - Kuala Lumpur, Malaysia
Duration: 13 Aug 201718 Aug 2017
http://www.iahrworldcongress.org/

Publication series

NameProceedings of the IAHR World Congress
PublisherIAHR
ISSN (Print)2521-7119
ISSN (Electronic)2521-716X

Conference

Conference37th IAHR World Congress
CountryMalaysia
CityKuala Lumpur
Period13/08/1718/08/17
Internet address

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  • Cite this

    Khajenoori, L., Wright, G., & Crapper, M. (2017). Simulating geobag revetment failure processes. In Proceedings of the 37th IAHR World Congress 'Learning from the Past for the Future' 13-18 August 2017, Kuala Lumpur, Malaysia (pp. 139-145). (Proceedings of the IAHR World Congress). IAHR.