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Geomechanics and Engineering Volume 31, Number 2, October25 2022 , pages 209-222 DOI: https://doi.org/10.12989/gae.2022.31.2.209 |
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Effect of soil condition on the coefficient of lateral earth pressure inside an open-ended pipe pile |
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Junyoung Ko, Sangseom Jeong and Hoyoung Seo
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| Abstract | ||
| Finite element analyses using coupled Eulerian-Lagrangian technique are performed to investigate the effect of soil conditions on plugging of open-ended piles in sands. Results from numerical simulations are compared against the data from field load tests on three open-ended piles and show very good agreement. A parametric study focusing on determination of the coefficient of lateral earth pressure (K) in soil plug after pile driving are then performed for various soil densities, end-bearing conditions, and layering conditions. Results from the parametric study suggest that the K value in the soil plug ‒ and hence the degree of soil plugging ‒ increases with increasing soil densities. The analysis results further show that the K value within the soil plug can reach about 63 to 71% of the coefficient of passive earth pressure after pile driving. For layered soil profiles, the greater K values are achieved after pile driving when the denser soil layer is present near the pile base regardless of number of soil layers. This study provides comprehensive numerical and experimental data that can be used to develop advanced theory for analysis and design of open-ended pipe piles, especially for estimation of inner shaft resistance after pile driving. | ||
| Key Words | ||
| coefficient of lateral earth pressure; coupled Eulerian-Lagrangian technique; degree of soil plugging; end-bearing conditions; open-ended piles; soil conditions | ||
| Address | ||
| Junyoung Ko:1Department of Civil Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea Sangseom Jeong: School of Civil and Environmental Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea Hoyoung Seo: Department of Civil, Environmental and Construction Engineering, Texas Tech University, 911 Boston Ave., Lubbock, TX 79409, USA | ||