Determination of Efficiency Factors for Closely Spaced Strip Footings on Cohesive-Frictional Soils
Article
Article Title | Determination of Efficiency Factors for Closely Spaced Strip Footings on Cohesive-Frictional Soils |
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ERA Journal ID | 41498 |
Article Category | Article |
Authors | Noo-Iad, Dulpinit, Shiau, Jim, Chim-Oye, Weeraya, Jamsawang, Pitthaya and Keawsawasvong, Suraparb |
Journal Title | Sustainability |
Journal Citation | 15 (3), pp. 1-17 |
Number of Pages | 17 |
Year | Feb 2023 |
Publisher | MDPI AG |
Place of Publication | Switzerland |
ISSN | 2071-1050 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/su15032585 |
Web Address (URL) | https://www.mdpi.com/2071-1050/15/3/2585 |
Abstract | The bearing capacity of closely spaced footings has become one of the important topics in geotechnical engineering research owing to the rapid development in urban areas around the world. In this paper, we propose three efficiency factors that can be used to describe the bearing capacity effects of closely spaced footings using Terzaghi’s traditional bearing capacity equation. With an advanced finite-element limit analysis of upper and lower bounds, both the closely spaced strip footings and the multiple closely spaced strip footings on cohesive–frictional soil with a surcharge effect were investigated. The numerical results showed that the efficiency factors were significantly influenced by the internal frictional angle and the spacing ratio. Several comparisons were made with those published in the literature. Furthermore, the failure mechanisms of closely spaced footings are presented, while design charts were produced with a wide range of practical parameters. This study should be of great interest to foundation engineering practitioners. |
Keywords | bearing capacity; interference; cohesive-frictional; footing; limit analysis |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Byline Affiliations | Thammasat University, Thailand |
School of Engineering | |
King Mongkut’s University of Technology Thonburi (KMUTT), Thailand |
https://research.usq.edu.au/item/x41y4/determination-of-efficiency-factors-for-closely-spaced-strip-footings-on-cohesive-frictional-soils
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