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    Volume 39, Issue 4 (July 2016)

    Automatic Shear Wave Velocity Estimation in Bender Element Testing

    (Received 8 September 2014; accepted 18 March 2016)

    Published Online: 2016

    CODEN: GTJODJ

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    Abstract

    Dynamic properties of soils, such as shear wave velocity and damping, are some of critical parameters in the design of civil infrastructures subjected to vibrations from earthquakes and machine foundations. Bender element (BE) testing is used in the laboratory to determine shear wave velocity; however, there is no standard procedure for the interpretation of the results. The main limitation in BE testing is the correct estimation of the shear wave arrival time leading to uncertainty in the values of shear wave velocity. In this paper, three different automatic methods for the shear wave arrival time detection were tested. From these methods, a new procedure was proposed for the automatic determination of the shear wave arrival time using the Akaike information criterion. The method is tested on a series of bender element measurements giving less than 5 % error when the results were compared with the standard method for a signal-to-noise ratio higher than four.


    Author Information:

    Finas, M.
    LAGIS UMR CNRS 8219, Ecole Centrale de Lille, Cité scientifique- CS20048, Villeneuve d'Ascq Cedex,

    Ali, H.
    Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON

    Cascante, G.
    Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON

    Vanheeghe, P.
    LAGIS UMR CNRS 8219, Ecole Centrale de Lille, Cité scientifique- CS20048, Villeneuve d'Ascq Cedex,


    Stock #: GTJ20140197

    ISSN:0149-6115

    DOI: 10.1520/GTJ20140197

    Author
    Title Automatic Shear Wave Velocity Estimation in Bender Element Testing
    Symposium ,
    Committee D18