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    Volume 38, Issue 1 (January 2015)

    A Direct Shear Apparatus With Vibrational Loading

    (Received 9 April 2014; accepted 24 October 2014)

    Published Online: 22 January 2015

    CODEN: GTJODJ

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    Abstract

    For some geotechnical design projects where soils are exposed to dynamic loads (vibrations), it becomes necessary to evaluate the strength and deformation characteristics of the soil under existing and/or anticipated vibrations. In order to investigate the effect of the vibrations on the strength and deformation properties of soils, representative samples should be collected and tested in laboratories and subjected to vibration of expected magnitudes. In this case, it is important that the laboratory equipment used is able to simulate field conditions as close as possible to provide the necessary parameters that can successfully be used in the design. A vibrational direct shear apparatus has been developed based on the conventional direct shear apparatus to evaluate the strength and deformation characteristics of soils (granular and cohesive) under a wide range of vibrational accelerations and frequencies. The apparatus makes it possible to test soils in both stress and displacement controlled modes. The design of the apparatus is such that it allows modification of the most commonly used direct shear apparatuses into the vibrational ones. The new apparatus was built and tested to prove its performance and reliability.


    Author Information:

    Taslagyan, Karén A.
    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB

    Chan, Dave H.
    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB

    Morgenstern, Norbert R.
    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB


    Stock #: GTJ20140078

    ISSN:0149-6115

    DOI: 10.1520/GTJ20140078

    Author
    Title A Direct Shear Apparatus With Vibrational Loading
    Symposium ,
    Committee D18