Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Study on the 3D Analysis of Driven Pile Penetration Based on Large Deformation Technique (Coupled Eulerian-Lagrangian)

대변형 해석기법(Coupled Eulerian-Lagrangian)을 이용한 항타 관입성 모사의 3차원 해석

  • 고준영 (연세대학교 토목환경공학과) ;
  • 정상섬 (연세대학교 토목환경공학과) ;
  • 이승연 (연세대학교 토목환경공학과)
  • Received : 2015.04.25
  • Accepted : 2015.08.12
  • Published : 2015.08.31
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Abstract

This paper presents the application of the Coupled Eulerian-Lagrangian (CEL) numerical technique to simulate the driving of open-ended piles into sandy soil. The main objective of this study was to investigate the applicability of CEL technique to the behavior of the driven pile penetration. Comprehensive studies to verify the behavior of driven pile penetration are presented in this paper. Through comparison with results of field load tests, the CEL methodology was found to be in good agreement with the general trend observed by in situ measurement, and the CEL approach accurately simulated the behavior of driven pipe piles.

최근 기존의 유한요소 해석기법으로는 항타 말뚝 관입과 같은 대변형 문제를 적절히 모사하기 어렵기 때문에 대변형 해석기법을 필요로 하고 있다. 본 연구에서는 대변형 수치해석 기법 중 하나인 Coupled Eulerian-Lagrangian(CEL) 기법을 이용하여 항타 관입의 3차원 대변형 해석을 수행하고자 한다. 현장 시험 결과와 비교를 통해, CEL 기법의 타당성을 검증하였고, 그 결과 본 연구에서 적용한 CEL 기법이 기존 유한요소 해석 기법으로는 구현이 불가능한 항타 말뚝 관입의 전반적인 거동을 합리적으로 모사할 수 있음을 알 수 있었다. 또한, 항타 개단말뚝의 특징인 선단부근에 응력이 집중되는 현상을 적절히 예측함을 알 수 있었다. 이를 통해 CEL 기법을 이용하여 항타 관입 해석이 가능한 것을 확인하였다.

Keywords

References

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