Improvement of bearing capacity of footings using reinforced granular trench

Bhattacharya, Paramita and Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 and Barole, Sudarshan (2021) Improvement of bearing capacity of footings using reinforced granular trench. International Journal of Geosynthetics and Ground Engineering, 7:79. pp. 1-14. ISSN 2199-9260


Abstract

Recent evidence suggests that the stability performance of footings can be greatly enhanced using a granular trench. Therefore, this paper sets out to study the bearing capacity of strip footing on a two-layered soil system that is composed of overlying granular fill above the undrained clay with an inclusion of a granular trench. The study also considers reinforced as well as unreinforced conditions at the interface of a two-layered soil system. An efficiency factor (ξ) of bearing capacity is defined by the ratio of the improved bearing capacity (pum) of strip footing in a two-layered soil system to the bearing capacity of strip footing over the original clay soil (pu). Numerical formulations are implemented by employing lower bound finite element limit analysis to study the bearing capacity of strip footing using LINPROG in MATLAB. The numerical models are validated with available results in the literature. Several parametric studies were performed for various settings, such as with or without granular trench and/or reinforced granular fill. The produced charts should, therefore, be of use to practitioners.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Date Deposited: 28 Oct 2021 00:00
Last Modified: 19 May 2022 02:27
Uncontrolled Keywords: ground improvement; footings; granular trench; lower bound limit analysis
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering
Identification Number or DOI: https://doi.org/10.1007/s40891-021-00324-4
URI: http://eprints.usq.edu.au/id/eprint/44009

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