Effects of Surface Roughness on Lateral Load-Carrying Capacities of Piles Embedded in Sand

Garam Kim, Kyungwon Ham, Junhwan Lee

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5 Citations (Scopus)


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, Rn, 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 Rn of 0.024. Surface roughness parameters for the p-y method were proposed as a function of Rn, 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.

Original languageEnglish
Article number04020064
JournalJournal of Geotechnical and Geoenvironmental Engineering
Issue number8
Publication statusPublished - 2020 Aug 1

Bibliographical note

Funding Information:
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).

Publisher Copyright:
© 2020 American Society of Civil Engineers.

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Environmental Science(all)


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