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    Volume 38, Issue 2 (March 2015)

    Investigation of the Shear Stress Relaxation Characteristics of a Structural Plane Using the Isostress Cyclic Loading Method

    (Received 13 March 2014; accepted 30 December 2014)

    Published Online: 2015

    CODEN: GTJODJ

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    Abstract

    In this study, the isostress cyclic loading method (ICLM) was proposed to study the shear stress relaxation characteristics of rock with a structural plane and the connection between the stress relaxation and long-term strength. Samples with artificial joint surfaces based on the 4th, 6th, and 10th discontinuity lines from Barton’s ten standard lines were poured using cement mortar. Shear stress relaxation tests were conducted with a biaxial rheological testing machine using the ICLM under various stress levels, where the shearing loading value was larger than the long-term strength. The law of shear stress relaxation was studied based on the test results. The interaction mechanism between stress relaxation and creep was discussed, and a stress relaxation method was proposed to determine the long-term strength that achieved the optimal results. This study could provide a reference for engineering practices and preparation for constitutive studies.


    Author Information:

    Ang, Liu
    Department of Geotechnical Engineering, Tongji Univ., Shanghai,

    Department of Civil and Environmental Engineering, The Univ. of Tokushima, Tokushima, Tokushima Prefecture,

    Mingrong, Shen
    Department of Geotechnical Engineering, Tongji Univ., Shanghai,

    Jingcai, Jiang
    Department of Civil and Environmental Engineering, The Univ. of Tokushima, Tokushima, Tokushima Prefecture,


    Stock #: GTJ20140049

    ISSN:0149-6115

    DOI: 10.1520/GTJ20140049

    Author
    Title Investigation of the Shear Stress Relaxation Characteristics of a Structural Plane Using the Isostress Cyclic Loading Method
    Symposium ,
    Committee D18