Damage assessment of base-isolated building using subspace identification approach

A. Mita, R. Yoshimoto

研究成果: Conference article査読


This paper proposes a damage detection algorithm of structural health monitoring (SHM) systems for a base-isolated building. The proposed algorithm mainly consists of the multiple-input multiple-output (MIMO) modal analysis and the physical parameter identification. Story stiffnesses as direct damage indices of the structure are identified using complex modal properties obtained by subspace identification. This algorithm is tuned for base-isolated buildings using model reduction to a single-degree of freedom (SDOF) system. The isolation layer and the superstructure are treated as separate substructures as they are distinctly different in their dynamic properties, so that the damage scenario for a base-isolated building 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.

ジャーナルAdvances in Earthquake Engineering
出版ステータスPublished - 2003
イベントFourth International Conference on Earthquake Resistant Engineering Structures, ERES IV - Ancona, Italy
継続期間: 2003 9月 222003 9月 24

ASJC Scopus subject areas

  • 土木構造工学
  • 地盤工学および土木地質学


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