Effect of loading eccentricity on the ultimate lateral resistance of twin-piles in clay
Article
Article Title | Effect of loading eccentricity on the ultimate lateral resistance of twin-piles in clay |
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ERA Journal ID | 4275 |
Article Category | Article |
Authors | Zhao, Zihao (Author), Zhang, Hao (Author), Ke, Lijun (Author), Zhao, Guoqing (Author), Meng, Suyun (Author), Wu, Fengyuan (Author) and Shiau, Jim (Author) |
Journal Title | Soils and Foundations |
Journal Citation | 62 (2), pp. 1-14 |
Article Number | 101126 |
Number of Pages | 14 |
Year | 2022 |
Place of Publication | Japan |
ISSN | 0038-0806 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.sandf.2022.101126 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S003808062200021X?via%3Dihub |
Abstract | This paper studies the effect of loading eccentricity and pile spacing on the ultimate lateral soil resistance of twin-piles using finite element limit analysis and analytical upper bound plasticity methods. Two kinematic mechanisms corresponding to the failure modes produced by the advanced finite element simulations are postulated with different eccentricity and pile spacing cases. Comparisons have shown excellent agreements between the two approaches. A series of parametric studies are then subsequently performed. Numerical results have shown that loading eccentricity considerably affects ultimate lateral soil resistance, leading to a maximum reduction of 50%. In addition, the curve of normalised pile resistance versus pile spacing ratio is dissimilar to that without considering the effect of loading eccentricity. The proposed solutions and failure mechanisms in this study will provide a deepened insight on the performance of twin-pile group under eccentric loads. |
Keywords | piles; twin-pile group; lateral soil resistance; clays; numerical limit analyses; analytical upper bound plasticity calculations; loading eccentricity |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Byline Affiliations | Shenyang Jianzhu University, China |
Hohai University, China | |
School of Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q72vw/effect-of-loading-eccentricity-on-the-ultimate-lateral-resistance-of-twin-piles-in-clay
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