1D wave propagation analysis and shear-wave velocity extraction of super high-rise buildings based on veritical microtremor observation array

Xin Wang, Kazuaki Masaki, Kojiro Irikura, Masato Motosaka, Hisada Yoshiaki

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Because shaking modes of super high-rise buildings are very complicated, it is not enough to perform health-monitoring only for the whole structures. We try to extract story-by-story shear-wave velocities applying the deconvolution method to microtremor records measured at super high-rise buildings. The shear-wave propagation (including reflection, transmission, and interferometry at the boundary of stories) extracted from microtremor records are compared with those simulated ones using 2-D frame models with different mass-and-rigidity distributions which lead to different shaking modes. Story-by-story shear-wave velocities can be extracted from buildings whose shaking modes of all the stories are mainly shear modes. However, the shear-wave velocities of the buildings cannot be extracted successfully, if the stories are shaking in pure bending mode, because no inter-story shear deformation happened, the apparent shear-rigidities of these stories can be seen as infinite, which lead shear-wave travel times to zero.

    Original languageEnglish
    Pages (from-to)1859-1868
    Number of pages10
    JournalJournal of Structural and Construction Engineering
    Volume80
    Issue number718
    DOIs
    Publication statusPublished - 2015

    Keywords

    • Deconvolution method
    • Microtremor measurement
    • Story-by-story shear-wave velocity
    • Structural health monitoring
    • Super high-rise buildings

    ASJC Scopus subject areas

    • Architecture
    • Building and Construction

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