Seismic damage evaluation of RC mem bers based on vibration characteristics

Seiji Abe, Hiroyuki Ueta, Motoyuki Suzuki, Hideki Naito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Damage identification methods for repairing and restraining reinforced concrete are important in light of the frequent earthquakes in Japan. Usually, structural damage is checked by visual observation, but it is difficult to evaluate the maximum response displacement and to identify the location of damage by sight alone. In this study, conductedin reinforced concrete beams forced vibration test and tlexural loading. In the experimental results of the global longitudinal vibration tests (excitation of the axial length direction), the natural frequency decreased to about 60% from the undamaged condition by an approximate plasticity rate of δIδy, = 2 (deformation ratio based on the yield displacement) in all of the beam specimens. The degree of damage to the RC member was concluded that could be evaluated by changes in natural frequency. Moreover, it has been found that the local dynamic response could be measured using high-frequency excitation in the section height direction. lt was shown that the damage location could be identified based on the local dynamic response.

Original languageEnglish
Title of host publicationProceedings of the 10th fib International PhD Symposium in Civil Engineering
PublisherUniversite Laval
Pages357-362
Number of pages6
ISBN (Electronic)9782980676215
Publication statusPublished - 2014
Event10th International Federation for Structural Concrete (fib) International PhD Symposium in Civil Engineering 2014 - Quebec City, Canada
Duration: 2014 Jul 212014 Jul 23

Other

Other10th International Federation for Structural Concrete (fib) International PhD Symposium in Civil Engineering 2014
CountryCanada
CityQuebec City
Period14/7/2114/7/23

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Architecture

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