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Geomechanics and Engineering Volume 41, Number 1, April10 2025 (Special Issue) pages 33-41 DOI: https://doi.org/10.12989/gae.2025.41.1.033 |
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 open accessEnhancing bearing capacity through optimal pile group spacing and arching effect |
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Chanhee Kim, Seongjin Kil, Jaewon Kim, Kabboo Kim, Younguk Kim and Junho Moon
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| Abstract | ||
| This study investigates the effect of pile spacing on the bearing capacity of group piles and proposes optimal spacing to enhance design efficiency. The theoretical analysis, based on Terzaghi's failure mode and the arching effect, evaluates the influence of spacing adjustments on bearing capacity improvement. Laboratory model tests were conducted to experimentally validate the theoretical findings, comparing pile capacities under various spacing conditions. The results reveal that arching effects become significant when the spacing ratio exceeds 1.7, leading to a substantial increase in bearing capacity. This research proposes an optimal spacing range to supplement current design standards and provides foundational data for efficient pile design. | ||
| Key Words | ||
| arching effect; group pile efficiency; pile spacing; soil bearing capacity; terzaghi failure | ||
| Address | ||
| Chanhee Kim: Offshore Wind Power Depart., BANDI Consultants Co.,Ltd., Republic of Korea Seongjin Kil, Jaewon Kim,Younguk Kim and Junho Moon: Department of Civil and Environmental Engineering, Myongji Univ., Republic of Korea Kabboo Kim: Busiddol Inc., Republic of Korea | ||