Shear load transfer characteristics of drilled shafts in weathered rocks

Sooil Kim, Sangseom Jeong, Sunghan Cho, Innjoon Park

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

The load distribution and deformation of drilled shafts subjected to axial loads were evaluated by a load-transfer approach. The emphasis was on quantifying the load-transfer mechanism at the interface between the shafts and surrounding highly weathered rocks based on a numerical analysis and on small-scale tension load tests performed on nine instrumented piles. An analytical method that takes into account the soil coupling effect was developed using a modified Mindlin's point load solution. Based on the analysis, a single-modified hyperbolic model is proposed for the shear transfer function of drilled shafts in highly weathered rocks. Through comparisons with field case studies, it is found that the prediction by the present approach is in good agreement with the general trend observed by in situ measurements, and thus represents a significant improvement in the prediction of load deflections of drilled shafts.

Original languageEnglish
Pages (from-to)999-1010
Number of pages12
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume125
Issue number11
DOIs
Publication statusPublished - 1999 Nov 1

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All Science Journal Classification (ASJC) codes

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

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