DOI QR코드

DOI QR Code

Prediction of Penetration Rate of Sheet Pile Using Modified Ramberg-Osgood Model

수정 Ramberg-Osgood 모델을 이용한 널말뚝의 관입속도 예측

  • 이승현 (선문대학교 토목공학과) ;
  • 김병일 (명지대학교 토목환경공학과) ;
  • 김주철 (삼성물산 건설부문 토목ENG팀) ;
  • 김정환 (삼성물산 건설부문 해외토목사업부)
  • Published : 2010.01.31

Abstract

Dynamic soil resistances were simulated by modified Ramberg-Osgood model in order to predict penetration rate of sheet pile installed by vibratory pile driver. Various factors which characterize modified Ramberg-Osgood model were determined considering the shapes of dynamic soil resistance curves obtained from field test and standard penetration value (N value) was used as parameter that relates field test results to the suggested model. Penetration rates calculated by analytical model were smaller than those of field test and penetration times were vice versa. Therefore, predicted penetration rate and penetration time by analytical model are more conservative than those of filed test.

진동타입기에 의해 시공되는 강널말뚝의 관입속도를 예측하고자 수정 Ramberg-Osgood 모델을 적용하여 진동타입기의 주기운동에 따른 지반의 동적 저항력을 모사하고자 하였다. 수정 Ramberg-Osgood 모델을 규정짓는 다양한 인자는 현장시험을 통해 구한 동적 지반저항력곡선의 양상을 반영하여 결정하였는데 이때 매개변수로는 표준관입시험값(N값)을 이용하였다. 관입속도는 해석결과가 현장시험결과에 비해 작게 계산되었으며 관입깊이에 따른 관입 소요시간은 해석결과가 현장시험결과에 비해 크게 계산되어 해석결과가 현장시험결과에 비해 보수적인 값을 보여주었다.

Keywords

References

  1. Holeyman, A. (1993), An Analytical Model-Based Computer Program to Evalaute the Penetration Speed of Vibratory Driven Sheet Piles, Research report prepared for BBRl, HYPERVIB1, pp.23.
  2. Novak, M., Nogami, T. and Aboul-Ella, F. (1978), "Dynamic soil reactions for plane strain case", J. Eng. Mech. Div., ASCE, 104(4), pp.953-959.
  3. Richard, Ralph M. and Abbott, Barry J. (1975), "Versatile elasticplastic stress-strain formula", Proceedings of the American Society of Civil Engineers, Vol.101, No. EM4, August, 1975.
  4. Vanden Berghe, J-F. and Holeyman, A. (1997), "Comparison of two models to evaluate the behavior of a vibratory driven sheet pile", XIth Young Geotechnical Engineers Conference and Computers, September 24-27, 1997, Madrid, Spain, pp.60-72.
  5. Wong, D., O'Neill, M. W., and Vipulanandan, C. (1992), "Modelling of Vibratory Pile Driving in Sand", International Journal for numerical and analytical methods in geomechanics, Vol.16, No.4, pp.189-210 . https://doi.org/10.1002/nag.1610160303