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Geomechanics and Engineering Volume 33, Number 1, April10 2023 , pages 091-99 DOI: https://doi.org/10.12989/gae.2023.33.1.091 |
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Analysis on inclined or rounded tip piles using 3D printing technology and FE analysis |
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Jaehong Kim, Junyoung Ko and Dohyun Kim
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| Abstract | ||
| To test the effect of various pile tip shape series of model scale loading tests were carried out on test piles with special pile tips. Special pile tips were made using the 3D printer and were attached to the bottom end of the test pile for loading tests. The pile tips were made to have 30, 45, 60 inclined tips, as well as a rounded tip. The main objective of the test was to observe the effect of various pile tip shapes on settlement and penetrability of the pile. Moreover, a numerical model simulating the pile loading test carried out in this study was established and verified based on the loading test results. From this, the stress concentration around the pile tip was investigated. This will allow us to analyze the decrease of stress concentration around the pile tip which is the main cause of the pile tip damage during pile installation. However, modifying the pile tip shape will eventually increase the settlement of the pile. By estimating the degree of increase in pile settlement, the viability and the efficiency of the pile shape modification was judged. In addition, case studies on the effect of different pile tip shape and ground conditions on pile settlement and stress dispersion was conducted. | ||
| Key Words | ||
| 3D printing; driven pile; load-settlement curve; pile damage (integrity); pile drivability; pile tip bearing | ||
| Address | ||
| Jaehong Kim: Department of Civil and Environmental Engineering, Dongshin University, Naju 58245, Korea Junyoung Ko: Department of Civil Engineering, Chungnam National University, Daejeon 34134, Korea Dohyun Kim: Department of Civil and Environmental Engineering, Hanbat National University, Daejeon 34158, Korea | ||