Damage assessment of base-isolated building using subspace identification approach

Akira Mita, R. Yoshimoto

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

Abstract

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.

Original languageEnglish
Title of host publicationAdvances in Earthquake Engineering
EditorsG. Latini, C.A. Brebbia
Pages179-189
Number of pages11
Volume13
Publication statusPublished - 2003
EventFourth International Conference on Earthquake Resistant Engineering Structures, ERES IV - Ancona, Italy
Duration: 2003 Sep 222003 Sep 24

Other

OtherFourth International Conference on Earthquake Resistant Engineering Structures, ERES IV
CountryItaly
CityAncona
Period03/9/2203/9/24

Fingerprint

Identification (control systems)
Damage detection
Structural health monitoring
Modal analysis
Numerical analysis
Stiffness
Experiments

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Mita, A., & Yoshimoto, R. (2003). Damage assessment of base-isolated building using subspace identification approach. In G. Latini, & C. A. Brebbia (Eds.), Advances in Earthquake Engineering (Vol. 13, pp. 179-189)

Damage assessment of base-isolated building using subspace identification approach. / Mita, Akira; Yoshimoto, R.

Advances in Earthquake Engineering. ed. / G. Latini; C.A. Brebbia. Vol. 13 2003. p. 179-189.

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

Mita, A & Yoshimoto, R 2003, Damage assessment of base-isolated building using subspace identification approach. in G Latini & CA Brebbia (eds), Advances in Earthquake Engineering. vol. 13, pp. 179-189, Fourth International Conference on Earthquake Resistant Engineering Structures, ERES IV, Ancona, Italy, 03/9/22.
Mita A, Yoshimoto R. Damage assessment of base-isolated building using subspace identification approach. In Latini G, Brebbia CA, editors, Advances in Earthquake Engineering. Vol. 13. 2003. p. 179-189
Mita, Akira ; Yoshimoto, R. / Damage assessment of base-isolated building using subspace identification approach. Advances in Earthquake Engineering. editor / G. Latini ; C.A. Brebbia. Vol. 13 2003. pp. 179-189
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