Bender elements and system identification for estimation of Vs

Waleed El-Sekelly, Vicente Mercado, Tarek Abdoun, Mourad Zeghal, Hesham El-Ganainy

    Research output: Contribution to journalArticle

    Abstract

    Accurate estimation of shear wave velocity is necessary in most geotechnical earthquake engineering applications. This paper details two different methodologies implemented for the estimation of the shear wave velocity profile of soil deposits. The first implemented method employs bender elements, whereas the second relies on a system identification technique and the use of acceleration recordings. In order to compare the two techniques, two centrifuge experiments were conducted using saturated Ottawa F#55 sand in a one-dimensional laminar container. The sand was deposited at void ratios 0.723 and 0.625, respectively. Shear wave velocity profiles obtained using both techniques were compared. These profiles were also compared to those documented in the literature. The results agree well with each other and with the values from the literature. The matching results support the validity of using both methods as a means of estimating the shear wave velocities in centrifuge models as well as in full-scale testing.

    Original languageEnglish (US)
    Pages (from-to)111-121
    Number of pages11
    JournalInternational Journal of Physical Modelling in Geotechnics
    Volume13
    Issue number4
    DOIs
    StatePublished - Jan 1 2013

    Fingerprint

    Shear waves
    wave velocity
    S-wave
    Identification (control systems)
    Centrifuges
    centrifuge
    velocity profile
    Sand
    sand
    earthquake engineering
    void ratio
    geotechnical engineering
    Containers
    Deposits
    Soils
    methodology
    Testing
    soil
    experiment
    Experiments

    Keywords

    • Centrifuge modeling
    • Dynamics
    • Geotechnical engineering

    ASJC Scopus subject areas

    • Geotechnical Engineering and Engineering Geology

    Cite this

    Bender elements and system identification for estimation of Vs. / El-Sekelly, Waleed; Mercado, Vicente; Abdoun, Tarek; Zeghal, Mourad; El-Ganainy, Hesham.

    In: International Journal of Physical Modelling in Geotechnics, Vol. 13, No. 4, 01.01.2013, p. 111-121.

    Research output: Contribution to journalArticle

    El-Sekelly, Waleed ; Mercado, Vicente ; Abdoun, Tarek ; Zeghal, Mourad ; El-Ganainy, Hesham. / Bender elements and system identification for estimation of Vs. In: International Journal of Physical Modelling in Geotechnics. 2013 ; Vol. 13, No. 4. pp. 111-121.
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