한국농공학회지 (Magazine of the Korean Society of Agricultural Engineers)

한국농공학회 (The Korean Society of Agricultural Engineers)
권호 표지

불포화토의 거동예측을 위한 구성식 개발(II) -구성식의 개발 및 적용-

Development of Constitutive Model for the Prediction of Behaviour of Unsaturated Soil( II) - Development and application of constitutive model -

  • 송창섭 (서울대학교 농업개발연구소) ;
  • 장병욱 (서울대학교 농업생명과학대학)
  • 발행 : 1995.03.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The aim of the work described in this paper is to develope a constitutive model for the prediction of an unsaturated Soil and to confirm the application of the model, which is composed of the elastic and plastic part in consideration of the matric suction and the net mean stress. From test results, volume changes and deviator stresses are analyzed at each state and their relationships are formulated. And the application of the model to silty sands is con- firmed by the comparison between test and predicted results. During drying-wetting and loading-unloading processes for isotropic states, the agreement between predicted and test results are satisfactory. And predicted deviator stresses are well agreed with test results in shearing process. Overall acceptable predictions are reproduced in high confining pressure. Usefulness of the model is confirmed for the unsat- urated soil except volumetric strain, which is not well agreed with the test results due to deficiency of dilatancy of the model in low confining pressure. It is, therefore, recom- mended to study the behavior of dilatancy for an unsaturated soil.

키워드

참고문헌

  1. The Mechanics of Soils; An Introduction to Critical State Soil Mechanics Atkinson,J.H.;P.L.Bransgy
  2. Geotechnique v.40 no.3 A Constitutive Model for Partially Saturated Soils Alonso,E.E.;A.Gens;A.josa
  3. Geotechnique v.15 no.3 Consolidation of Compacted and Unsaturated Clays Barden,L.
  4. Proc. 3rd Int. Conf. Expansive Soil Swell Pressure and Free Swell in a Compacted Clay Brackely,I.J.A.
  5. Critical State Soil Mechanics via Finite Element Britto,A.M.;M.J.Gunn
  6. Geotechnique v.41 no.2 Discussion of'A Constitutive Model for Partially Saturated Soils Campos,T.M.P.;E.A.Vargas;E.E. Alonso;A.Josa
  7. Geotechnique v.3 no.1 The Movement and Distribution of Water in Soils Croney,D.
  8. Geotechnique v.3 no.1 Constitutive Laws for Engineering materials with Empohasis on Geologic Materials Desai,C.S.;H.J.Siriwardane
  9. Geotechnique v.36 no.3 The Shear Strength of Parly Saturated Soils Escario,V.;J.Saez
  10. J. of Geotech. v.103 no.GT5 Stress Variables for Ynsaturated Soils Fredlund,D.G.;N.R.Morgenstern
  11. Can. Geotech. J. v.15 no.2 The Shear Strength of Unsaturated Soils Fredlund,D.G.;N.R.Morgenstern;D.A.Widger
  12. Soil Mechanics for Unsatrurated Soils Fredlund,D.G.;H.Rahardjo
  13. Numerical Models in Geomechanics Numong Ⅲ, Elsevier Applied Science Elastoplastic Modelling of partially Saturated Soils Gens,A.;E.E.Alonso;A.Josa
  14. Geotechnuque v.39 no.3 Elasto Plastic Unsaturated Soil Subject to Impact Ghaxireh,N.;J.Billam
  15. Research Conference on Shear Strength of Cohesive Soils v.2 The Strength of Compacted Cohesive Soils Seed,H.B.;J.K.Mitchell;C.K.Chan
  16. Geotechnique v.38 no.3 A Conceptual Model for Soils Containing Large Gas Bubbles Wheeler,S.J.
  17. 서울대학교 대학원 박사학위 논문 不飽化土의 擧動豫測을 위한 構成式 開發 宋昌變