Stability Charts for Closely Spaced Strip Footings on Hoek–Brown Rock Mass

Keawsawasvong, Suraparb and Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 and Limpanawannakul, Khemmapa and Panomchaivath, Suttikarn (2022) Stability Charts for Closely Spaced Strip Footings on Hoek–Brown Rock Mass. Geotechnical and Geological Engineering. pp. 1-16. ISSN 0960-3182

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Abstract

Footings are constructed closely to each other in mountainous rock areas and the determination of closely spaced bearing capacity footings on rock masses has become an important topic of recent research. The primary aim of this paper is to determine an efficiency factor, just like in the design of a pile group, that can be used to evaluate the bearing capacity of closely spaced footings on Hoek–Brown mass. The advanced finite element limit analysis of upper and lower bound theorems is used to study the stability of two and multiple interfering footings using the Hoek–Brown parameters such as GSI (geological strength index) and mi (Hoek–Brown yield parameter). This study found that the efficiency factor is influenced by three dimensionless parameters including GSI, mi, and S/B. Failure mechanisms of the problems are also investigated, and stability charts and tables produced for practical uses. Overall, these results broadly support the common understanding of the two key parameters GSI and mi in the HB failure criterion. As a result of these investigations, suggestions were identified for future research.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Date Deposited: 21 Mar 2022 03:48
Last Modified: 19 May 2022 02:27
Uncontrolled Keywords: Bearing capacity; Hoek–Brown yield criterion; Interference; Limit analysis; Rock mass
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering
Identification Number or DOI: https://doi.org/10.1007/s10706-022-02077-x
URI: http://eprints.usq.edu.au/id/eprint/47082

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