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    Volume 45, Issue 2 (February 2017)

    Discussion of “Radial Strain Behaviors and Stress State Interpretation of Soil Under Direct Simple Shear” by X. Kang, Y. Cheng, and L. Ge. The Regular Article Was Published in Journal of Testing and Evaluation, Vol. 43, No. 6, 2015, pp. 1594–1601, doi:10.1520/JTE20140202. ISSN 0090–3973

    (Received 27 October 2015; accepted 29 October 2015)

    Published Online: 27 February 2017

    CODEN: JTEVAB

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    Abstract

    Two methods were used in determining the stress state of simple shear tests in the discussed paper. The authors stated that the second method was proposed by Oda and Konishi, based on the distribution law of contact force (Oda, M. and Konishi, J., “Rotation of Principal Stresses in Granular Material During Simple,” Soils and Foundations., Vol. 14, No. 4, 1974, pp. 39–53.). However, the relation used in the method was found by Roscoe et al. from experimental results (Roscoe, K. H., Bassett, R. H., and Cole, E. R. L., “Principal Axes Observed During Simple Shear of a Sand,” Proceedings of the Geotechnical Conference on Shear Strength Properties of Natural Soils and Rocks, Vol. 1, Norwegian Geotechnical Institute, Oslo, 1967, pp. 231–237.). In addition, the determination of the constant k, which used k = 1 − K0, was problematic in the discussed paper. First, the equation could only be deduced after some assumptions were made. Second, the value of k was not a constant if the K0 changed.


    Author Information:

    Li, Y.
    International Doctoral Innovation Centre, The Univ. of Nottingham Ningbo China, Ningbo,

    Yang, Y. M.
    International Doctoral Innovation Centre, The Univ. of Nottingham Ningbo China, Ningbo,

    Roberts, G. W.
    Department of Civil Engineering, The Univ. of Nottingham Ningbo China, Ningbo,

    Yu, H. S.
    Faculty of Engineering, The Univ. of Nottingham, Univ. Park, Nottingham NG7 2RD,


    Stock #: JTE20150447

    ISSN:0090-3973

    DOI: 10.1520/JTE20150447

    Author
    Title Discussion of “Radial Strain Behaviors and Stress State Interpretation of Soil Under Direct Simple Shear” by X. Kang, Y. Cheng, and L. Ge. The Regular Article Was Published in Journal of Testing and Evaluation, Vol. 43, No. 6, 2015, pp. 1594–1601, doi:10.1520/JTE20140202. ISSN 0090–3973
    Symposium ,
    Committee D18