Evaluation of Damping Ratio of Buildings Using Seismic Interferometry Method

Zheng Zhang, Xin Wang, Masayuki Nagano

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Seismic interferometry method is applied to evaluate the internal attenuation of buildings regarding the building as the sedimentary layers of one-dimensional layered medium. The original wave field is reconstructed to be a new wave field expressed by deconvolved waves with virtual source at the top, consisting single up-going wave and single down-going wave reflected at the top. The damping ratio is evaluated from the transfer functions of up-going and down-going waves of the deconvolved wave at the 1st-floor of a building. The feasibility of this method is investigated using a homogeneous model, a 2-layer model, and a heterogeneous model, imaging 10 story buildings. We found that the damping ratios of those models extracted from the transfer functions were consistent with the preset values.

Original languageEnglish
Title of host publicationExperimental Vibration Analysis for Civil Engineering Structures - Select Proceedings of the EVACES 2021
EditorsZhishen Wu, Tomonori Nagayama, Ji Dang, Rodrigo Astroza
PublisherSpringer Science and Business Media Deutschland GmbH
Pages391-399
Number of pages9
ISBN (Print)9783030932350
DOIs
Publication statusPublished - 2023
Event9th International Conference on Experimental Vibration Analysis for Civil Engineering Structures, EVACES 2021 - Virtual, Online
Duration: 17 Sept 202120 Sept 2021

Publication series

NameLecture Notes in Civil Engineering
Volume224
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference9th International Conference on Experimental Vibration Analysis for Civil Engineering Structures, EVACES 2021
CityVirtual, Online
Period17/09/2120/09/21

Keywords

  • Damping ratio
  • Deconvolution
  • Seismic interferometry method
  • Transfer function
  • Wave propagation

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