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Analysis Method for Non-Linear Finite Strain Consolidation for Soft Dredged Soil Deposit -Part I: Parameter Estimation for Analysis

초연약 준설 매립지반의 비선형 유한변형 압밀해석기법 -Part I: 해석 물성치 평가

  • 곽태훈 ((주) 동명기술공단) ;
  • 이철호 (고려대학교 건축사회환경공학부) ;
  • 임지희 (고려대학교 건축사회환경공학과) ;
  • 안용훈 ((주) 건화) ;
  • 최항석 (고려대학교 건축사회환경공학부)
  • Received : 2011.01.17
  • Accepted : 2011.09.15
  • Published : 2011.09.30

Abstract

The renowned Terzaghi's one-dimensional consolidation theory is not applicable to quantification of time-rate settlement for highly deformable soft clays such as dredged soil deposits. To deal with this special condition, a non-linear finite strain consolidation theory should be adopted to predict the settlement of dredged soil deposits including self-weight and surcharge-induced consolidation. It is of importance to determine the zero effective stress void ratio ($e_{00}$), which is the void ratio at effective stress equal to zero, and the relationships of void ratio-effective stress and of void ratio-hydraulic conductivity for characterizing non-linear finite strain consolidation behavior for deformable dredged soil deposits. The zero effective stress void ratio means a transitional status from sedimentation to self-weight consolidation of dredged soils. In this paper, laboratory procedures and equipments are introduced to measure such key parameters in the non-linear finite strain consolidation analysis. In addition, the non-linear finite strain consolidation parameters of the Incheon clay and kaolinite are evaluated with the aid of the proposed methods in this paper, which will be used as input parameters for the non-linear finite strain consolidation analyses being performed in the companion paper.

Acknowledgement

Supported by : 고려대학교

References

  1. 김수삼 (1983), 한국 서해안(바월지역) 해서토의 침강에 과한 실험적 연구, 중앙대학교 박사학위 논문.
  2. 유건선, 정인준 (1979), "점성토의 침식 및 퇴적에 관한 실험적 연구", 대한토목학회지, 제27권 5호, pp.55-64.
  3. 최항석, 최한영, Stark, T.D. (2006), "준설매립지반의 침하거동 예측을 위한 준설토의 역학적 거동 특성", 한국지반공학회, 준설매립위원회 학술발표회, 교총회관, 서울, 8월 25일, pp.75-86.
  4. 최항석, 옥영석, 이철호, 이종선 (2007), "인천지역 준설토의 압밀 특성 분석과 현장매립 상태 예측방법 연구", 준설매립 기술위원회 학술발표회 논문집, 교총회관, 서울, 8월 24일, pp.95-104.
  5. 한국지반공학회 (2004), 준설매립, 지반공학 시리즈 10, 구미서관
  6. Archie, G. E. (1942), "The electrical resistivity log as an aid in determining some reservoir characteristics", Transactions of the American Institute of Mining, Metallugical, and Petroleum Engineers,. 146, pp.54-62.
  7. Been, K. and Sills, G. C. (1981), "Self-weight Consolidation of Soft Soils : An Experimental and Theoretical Study", Geotechnique, Vol.31, pp.519-535. https://doi.org/10.1680/geot.1981.31.4.519
  8. Bo, M. W. (2002), Deformation of Ultra-Soft Soil, Ph.D. Thesis, Nanyang Technological University, Singapore.
  9. Cargill, K.W. (1982), "Consolidation of Soft Layers by Finite Strain Analysis", Miscellaneous Paper GL-82-3, US Army Engineer Waterways Experiment Station, Vicksburg, MS
  10. Cargill, K. W. (1983), "Prediction of consolidation of very soft soil", Journal of Geotechnical Engineering, Vol.110, No.6, pp.775-795.
  11. Cargill, K. W. (1986), "The large strain, controlled rate of strain (LSCRS) device for consolidation testing of soft fine-grained soils", Technical Report GL-86-13, Waterways Experiment Station, Corps of Engineer, Vicksburg, MS.
  12. Gibson, R. E., England, G. L., and Hussey, M. J. L. (1967), "The Theory of One-Dimensional Consolidation of Saturated Clays I. Finite Non-Linear Consolidation of Thin Homogeneous Layers", Geotechnique, Vol.17, No.3, pp.261-273. https://doi.org/10.1680/geot.1967.17.3.261
  13. Imai, G., Tsuruya, K., and Yano, K. (1979), "A treatment of salinity in water content determination of very soft clays", Soil and Foundations. Vol.19, No.3, pp.84-89. https://doi.org/10.3208/sandf1972.19.3_84
  14. Kynch, C. J. (1952), "A Theory of Sedimentation", Trans. Faraday Soc. Vol.48, pp.166-177. https://doi.org/10.1039/tf9524800166
  15. Lee, J. S. (2003), High resolution geophysical techniques for smallscale soil model testing, Ph.D. Thesis, Civil Engineering, Georgia Institute of Technology, Atlanta.
  16. Monte, J. L. and Krizek, R. J. (1976), "One-dimensional mathematical model for large-strain consolidation", Getechnique, Vol.26, No.3, pp.495-510. https://doi.org/10.1680/geot.1976.26.3.495
  17. Morris, P. H. (2002), "Analytical solutions of linear finite-strain one -dimensional consolidation", Journal of geotechnical and geoenvironmental engineering, ASCE, Vol.128, No.4, pp.319-326. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:4(319)
  18. Stark, T. D., Choi, H., and Schroeder, P. R. (2005a), "Settlement of Dredged and Contaminated Material Placement Areas, I: Theory and Use of Primary Consolidation, Secondary Compression, and Desiccation of Dredged Fill", Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE, Vol.131, No.2, pp.43-51. https://doi.org/10.1061/(ASCE)0733-950X(2005)131:2(43)
  19. Stark, T. D., Choi, H, Schroeder, P. R. (2005b), "Settlement of Dredged and Contaminated Material Placement Areas, II: Primary Consolidation, Secondary Compression, and Desiccation of Dredged Fill Input Parameters", Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE, Vol.131, No.2, pp.52-61. https://doi.org/10.1061/(ASCE)0733-950X(2005)131:2(52)
  20. Znidarcic, D. (1999), "Predicting the Behavior of Disposed Dredging Soils", Geotechnical Engineering for Transportation Infrastructure, Proceedings of the 12th European Conference on Soil Mechanics and Geotechnical Engineering, Vol.2, pp.877-886.

Cited by

  1. Analytical Study for the Self-weight Consolidation Behaviour of Dredged Soft Soils vol.35, pp.5, 2018, https://doi.org/10.9786/kswm.2018.35.5.411