Undrained Stability of Ring Foundations: Axisymmetry, Anisotropy, and Nonhomogeneity

Keawsawasvong, Suraparb and Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 and Ngamkhanong, Chayut and Lai, Van Qui and Thongchom, Chanachai (2022) Undrained Stability of Ring Foundations: Axisymmetry, Anisotropy, and Nonhomogeneity. International Journal of Geomechanics, 22 (1):04021253. pp. 1-10. ISSN 1532-3641


Abstract

Ring foundations are widely used to support various types of offshore structures because of the cost-effective reason. Unlike the traditional circular foundations, very few studies were reported with regard to the bearing capacity of ring foundations. In addition, the study on the stability effects of anisotropic and nonhomogeneous clays is yet to be found in the current literature. The purpose of the technical note is therefore to bridge the current research gap. By using the robust lower and upper bound finite-element limit analysis in axisymmetric conditions, new stability solutions of ring footings on anisotropic and nonhomogeneous clays are obtained using dimensionless parameters. The associated failure mechanisms are also examined and discussed, while the design equations are proposed for predicting the bearing capacity of ring foundations. The findings in this study provide a reliable solution to improve the current design standard for ring footings in anisotropic and nonhomogeneous clays.


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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: 06 Dec 2021 04:08
Last Modified: 20 Sep 2022 04:53
Uncontrolled Keywords: Anisotropy and nonhomogeneity; Axisymmetry; Cost effective; Limit analysis; Non-homogeneous; Nonhomogeneity; Ring footing; Ring foundation; Undrained
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/10.1061/(ASCE)GM.1943-5622.0002229
URI: http://eprints.usq.edu.au/id/eprint/44392

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