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http://dx.doi.org/10.12814/jkgss.2022.21.3.049

Changes in Ultimate Bearing Capacity according to the Position of the End of the Drilled Shaft  

Choi, Dong-Lo (Korea Maritime and Ocean Univ.)
Park, Kyeong-Ho (Lotte E&C)
Kim, Chae-Min (Dept. of Civil Engrg., Kyungsung Univ.)
Kim, Tae-Hyung (Dept. of Civil Engrg., Korea Maritime and Ocean Univ.)
Publication Information
Journal of the Korean Geosynthetics Society / v.21, no.3, 2022 , pp. 49-59 More about this Journal
Abstract
This study was conducted to find out the rational and appropriate design of drilled shaft. In other words, in order to find out the variation of ultimate bearing capacity according to the change in the support layer of drilled shaft, back analysis was performed using the bi-directional pile load test performed on drilled shaft. Based on the back-analyzed data, numerical analysis of the pile head load was performed, and the ultimate bearing capacity in the target ground was evaluated using the Davisson method. As a result of numerical analysis of one case where the end of the pile was seated on the top of the weathered rock layer, and three cases where the end of the pile was embedded at different locations in the weathered soil, it was found that sufficient ultimate bearing capacity was secured in all cases. In other words, the case where the end of the pile is seated on the top of the weathered rock layer, not embedded the weathered rock, and the drilled shaft embedded into the weathered soil also have sufficient bearing capacity, so it can be used as a support layer for drilled shaft.
Keywords
Drilled shaft; Ultimate bearing capacity; Bi-directional pile load test; Davisson method; Weathered soil;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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