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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