Damage detection of a structural health monitoring system for a 7-story seismic isolated building

Reiki Yoshimoto, Akira Mita, Keiichi Okada, Hideaki Iwaki, Michihito Shiraishi

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

This paper proposes damage detection algorithm of a structural health monitoring (SHM) system for a seismic isolated building. The proposed algorithm consists of the multiple-input multiple-output (MIMO) modal analysis and the physical parameter identification. A story stiffness as a direct damage index of the structure is identified using complex modal properties obtained by subspace-based state space model identification (4SID). This algorithm is tuned for seismic isolated structures using substructure approach (SSA). Of a seismic isolated structure, the isolation layer and superstructure are treated as separate substructures as they are distinctly different in their dynamic properties. The damage scenario for a seismic isolated structure is much simpler and more accurate than for a conventional building. Our strategy is to maximize the benefit of this simplicity. The effectiveness is verified through the numerical analysis and experiment. The method is finally applied to an existing building in Japan. The monitoring target is a 7-story seismic isolated building with the gross floor area of 18606m2 and with total height of 31m. This study shows potential to build a simple and reliable SHM system for seismic isolated buildings.

本文言語English
ページ(範囲)594-605
ページ数12
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
5057
DOI
出版ステータスPublished - 2003
イベントSmart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures - San Diego, CA, United States
継続期間: 2003 3月 32003 3月 6

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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