한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

  • 제16권4호
  • /
  • Pages.191-199
  • /
  • 2000
  • /
  • 1229-2427(pISSN)
  • /
  • 2288-646X(eISSN)
한국지반공학회 (Korean Geotechnical Society)
권호 표지

피에조콘 시험의 유한요소 해석 II

Finite Element Analysis of Piezocone Test II

  • 김대규 (정회원, 고려대학교 방재과학기술연구센터) ;
  • 김낙경 (정회원, 성균관대학교 공과대학 토목공학과)
  • 발행 : 2000.08.01
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초록

본 연구에서는 피에조콘 시험의 유한요소해석을 수행하였다. 이를 위하여 점탄소성 bounding surface 모델, 가상일의 방정식(virtual work equation) 및 theory of mixtures를 Updated Lagrangian reference frame에서 formulation하였다. 결과적으로 구성된 유한요소 formulation을 컴퓨터 프로그래밍 하였으며 유한요소해석에서 얻은 콘 저항치, 과잉간극수압 및 간극수압소산 등의 결과를 실험치와 비교 분석하였으며 피에조콘 주변의 응력, 변형율 및 과잉간극수압의 contour를 유한요소해석에서 구하여 이를 고찰하였다. 비등방성 및 점성이 추가된 구성모델을 사용함으로서 응력의 비등방성 및 관입속도를 효과적으로 simulation할 수 있었다. 유한요소 Formulation 과정은 'I' 결과는 'II'에서 설명된다.

In this research, the finite element analysis of piezocone penetration and dissipation tests has been conducted using the anisotropic elastoplastic-viscoplastic bounding surface model, virtual work equation, and theory of mixtures formulated in the Up[dated Lagrangian reference frame for the large deformation and finite strain nature of piezocone penetration. The formulated equations have been implemented into a finite element program. The cone resistance, excess pore water pressure, and dissipation of excess pore water pressure from the finite element analysis have been compared and investigated. An effective simulation could be performed with the use of the anisotropic and viscous soil model. The finite element formulations and the results are described in part 'I' and part 'II' respectively.

키워드

참고문헌

  1. International Journal for Numerical and Analytical Methods on Geomechanics(In press) Numerical Analysis of the Miniature Piezocone Penetration Tests(PCPT) in Cohesive Soils Abu-Farsakh, M.Y.;Voyiadjis, G.Z.;Tumay, M.T.
  2. Computer Methods and Advances in Geomechanics Characterization of Time-dependent Behavior of Anisotropic Cohesive Soils Al-Shamrani, M.A.;Sture, S.;Siriwardane(ed.);Zaman(ed.)
  3. International Journal for Numerical and Analytical Methods in Geomechanics v.7 A Simple Contact-Friction Interface Element with Applications to Buried Culverts Katona, M.G.
  4. Numerical Simulation and Experimental Verification of Cone Penetration Rate and Anisotropy in Cohesive Soils Kim, D.-K.
  5. Journal of the Korean Geotechnical Society v.17 no.3 A Study on the Model Parameters of the Anisotropic Elastoplastic-viscoplastic Bounding Surface Model for Cohesive Soils Kim, D.-K.
  6. Calibration Chamber Studies of Miniature Piezocone Penetration Tests in Cohesive Soil Specimens Kurup, P.U.
  7. International Journal of Engineering Science v.18 Mechanics of Continuous Porous Media Prevost, J.H.
  8. International Symposium on Cone Penetration Testing Profiling OCR and Ko from Piezocone Penetration Tests Tumay, M.T.;Kurup, P.U.;Voyiadjis, G.Z.
  9. Computers and Geotechnics v.20 no.3/4 Coupled Theory of Mixtures for Clayey Soils Voyiadjis, G.Z.;Abu-Farsakh, M.Y.