Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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Punching shear failure in pile-supported embankment

성토지지말뚝으로 지지된 성토지반내 펀칭전단파괴

  • Hong, Won-Pyo (Dept. of Civil and Environmental Engineering, Chung-Ang University) ;
  • Hong, Seong-Won (Disaster Prevention Research Institue, Chung-Ang University) ;
  • Song, Jei-Sang (Dept. of Civil and Environmental Engineering, Chung-Ang University) ;
  • Lee, Jae-Ho (Geotechnical Engineering Team of GS Engineering & Construction)
  • 홍원표 (중앙대학교 건설환경공학과) ;
  • 홍성원 (중앙대학교 방재연구소) ;
  • 송제상 (중앙대학교 건설환경공학과) ;
  • 이재호 (GS 건설 기술본부 지반팀)
  • Published : 2010.03.25
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Abstract

In this study, a computer program to predict the behavior of laterally loaded single pile and pile groups was developed by using a beam-column analysis in which the soils are modeled as nonlinear springs by a family of p-y curves for subgrade modulus. The special attention was given to the lateral displacement of a single pile and pile groups due to the soil condition and the cap rigidity. The analysis considering group effect was carried out for $2{\times}2$ and $3{\times}3$ pile groups with the pile spacing 3.0B, 4.0B and 5.0B. Based on the results obtained, it is found that the overall distributions of deflection, slope, moment, and shear force in a single pile give a reasonable results irrespective of cap connectivity conditions. It is also found that even though there are some deviations in deflection prediction compared with the observed ones, the prediction by present analysis simulates much better the general trend observed by the centrifuge tests than the numerical solution predicted by PIGLET.

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