Identification of Anisotropic Criteria for Stratified Soil Based on Triaxial Tests Results

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The paper presents the identification methodology of anisotropic criteria based on triaxial test results. The considered material is varved clay – a sedimentary soil occurring in central Poland which is characterized by the so-called “layered microstructure”. The strength examination outcomes were identified by standard triaxial tests. The results include the estimated peak strength obtained for a wide range of orientations and confining pressures. Two models were chosen as potentially adequate for the description of the tested material, namely Pariseau and its conjunction with the Jaeger weakness plane. Material constants were obtained by fitting the model to the experimental results. The identification procedure is based on the least squares method. The optimal values of parameters are searched for between specified bounds by sequentially decreasing the distance between points and reducing the length of the searched range. For both considered models the optimal parameters have been obtained. The comparison of theoretical and experimental results as well as the assessment of the suitability of selected criteria for the specified range of confining pressures are presented.

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  • [1] De Groot D.J. Lutenegger A.J. Characterization by sampling and in-situ testing Connecticut Valley varved clay Studia Geotechnica et Mechanica 2005 27(3–4) 107–120.

  • [2] Duveau G. Shao J.F. Henry J.P. Assessment of some failure criteria for strongly anisotropic geomaterials Mechanics of Cohesive-frictional Materials 1998 3(1) 1–26.

  • [3] Florkiewicz A. Kostrzewski W. O interpretacji badań i opisie wytrzymałości osadów (iłów) warwowych Zeszyty Naukowe Politechniki Poznańskiej 1995 Nr 40 9–20.

  • [4] Jaeger J.C. Shear failure of anisotropic rocks Geological Magazine 1960 97(01) 65–72.

  • [5] Lu Y. Tan Y. Lin G. Characterization of thick varvedclayey-silt deposits along the Delaware River by field and laboratory tests Environmental earth sciences 2013 69(6) 1845–1860.

  • [6] Łydżba D. Kawa M. Failure mechanism of sedimentary rocks: micromechnics approach 2nd International Symposium On Computational Geomechanics (COMGEO II) 2011 27–29.

  • [7] Łydżba D. Pietruszczak S. Shao J.F. On anisotropy of stratified rocks: homogenization and fabric tensor approach Computers and Geotechnics 2003 30(4) 289–302.

  • [8] Łydżba D. Tankiewicz M. Preliminary study of failure anisotropy characterization of varved clay AGH Journal of Mining and Geoengineering 2012 36 229–234.

  • [9] Pariseau W.G. Plasticity theory for anisotropic rocks and soils 10th US Symposium on Rock Mechanics (USRMS) American Rock Mechanics Association 1968 267–295.

  • [10] Petterson G. Renberg I. Geledi P. Lindberg A. Lindgren F. Spatial uniformity of sediment accumulation in varved lake sediments in northern Sweden Journal of Paleolimnology 1993 9(3) 195–208.

  • [11] Pietruszczak S. Łydżba D. Shao J.F. Modelling of inherent anisotropy in sedimentary rocks International Journal of Solids and Structures 2002 39(3) 637–648.

  • [12] Tankiewicz M. Badania laboratoryjne kierunkowej wytrzymałości gruntu warstwowego Inżynieria Morska i Geotechnika 2015 3 316–319.

  • [13] Tankiewicz M. Structure investigations of layered soil – varved clay Annals of Warsaw University of Life Sciences – SGGW Land Reclamation 2016 48(4) 365–375.

  • [14] Watson J.M. Vakili A. Jakubowski M. Rock strength anisotropy in high stress conditions: a case study for application to shaft stability assessments Studia Geotechnica et Mechanica 2015 37(1) 115–125.

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