Effects of Surface Roughness on Lateral Load–Carrying Capacities of Piles Embedded in Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 146, Issue 8
Abstract
In this study, the effect of pile surface roughness on the lateral load–carrying behavior of piles embedded in sand was investigated. Centrifuge tests were conducted on various model piles with different degrees of surface roughness. The effects of the pile surface roughness, given by the normalized roughness, , on the lateral-load capacity and lateral displacement were analyzed. From the centrifuge tests, it was observed that the lateral-loading capacity markedly increased with the pile surface roughness. The effect was most significant within low degrees of surface roughness up to of 0.024. Surface roughness parameters for the method were proposed as a function of , which could explain the effect of the pile surface roughness on calculated lateral load–displacement curves. Finite element analyses were performed to assess and compare the experimentally and numerically determined effects of the pile surface roughness. The numerical simulation of laterally loaded piles does not fully reproduce the experimental effect of surface roughness on the lateral-load response, which needs to be properly considered in the analysis.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work was supported by the Research Institute of Korea Electric Power Corporation (KEPRI). This work was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE), with grants funded by the government of Korea (Nos. 20194030202460 and 2020R1A2C2011966).
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 146 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: May 15, 2019
Accepted: Mar 9, 2020
Published online: May 21, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 21, 2020
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