Volume 37, Issue 4 (July 2014)

    Shear Wave Velocity Measurement in the Centrifuge Using Bender Elements

    (Received 22 November 2013; accepted 18 March 2014)

    Published Online: 2014

    CODEN: GTJOAD

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    Abstract

    Shear wave velocity is an important parameter for the design of geotechnical systems, particularly in seismically active areas. The availability of a reliable method for measuring shear wave velocity in centrifuge soil models is necessary in order to fully characterize the soil. The paper describes enhanced bender elements system developed at Rensselaer Polytechnic Institute. The fabrication process of bender elements in the laboratory is described in this paper. Also, the estimation of the shear wave velocity using the first arrival method is explained along with a study of near field presence in the results. To confirm the validity of the system, four centrifuge experiments were conducted on dry and saturated Ottawa F#55 sand. A comparison is performed between dry and saturated soil having the same relative density. Also, the effect of the direction of polarization of the shear wave is studied in the paper. The results are then compared to theoretical values estimated based on the literature and are found to match reasonably well; thus confirming the accuracy of the new system.


    Author Information:

    El-Sekelly, Waleed
    Graduate Research Assistant, Rensselaer Polytechnic Institute, Department of Civil and Environmental Engineering, Troy, NY

    Tessari, Anthony
    Assistant Professor, Univ. at Buffalo, Department of Civil, Structural and Environmental Engineering, Buffalo, NY

    Abdoun, Tarek
    Iovino Chair Professor, Rensselaer Polytechnic Institute, Department of Civil and Environmental Enginerring, Troy, NY


    Stock #: GTJ20130189

    ISSN: 0149-6115

    DOI: 10.1520/GTJ20130189

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    Author
    Title Shear Wave Velocity Measurement in the Centrifuge Using Bender Elements
    Symposium , 0000-00-00
    Committee D18