Damage assessment of base-isolated building using subspace identification approach

Akira Mita, R. Yoshimoto

Research output: Chapter in Book/Report/Conference proceedingChapter

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 publicationWIT Transactions on the Built Environment
PublisherWITPress
Pages179-189
Number of pages11
Volume72
Publication statusPublished - 2003

Fingerprint

Identification (control systems)
Damage detection
Structural health monitoring
Modal analysis
Numerical analysis
Stiffness
Damage
Experiments
Isolation
Simplicity
Numerical Analysis
Health
Monitoring
Scenarios
Experiment
Layer
Conventional
Physical

ASJC Scopus subject areas

  • Architecture
  • Building and Construction
  • Safety, Risk, Reliability and Quality
  • Civil and Structural Engineering
  • Computer Science Applications
  • Arts and Humanities (miscellaneous)

Cite this

Mita, A., & Yoshimoto, R. (2003). Damage assessment of base-isolated building using subspace identification approach. In WIT Transactions on the Built Environment (Vol. 72, pp. 179-189). WITPress.

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

WIT Transactions on the Built Environment. Vol. 72 WITPress, 2003. p. 179-189.

Research output: Chapter in Book/Report/Conference proceedingChapter

Mita, A & Yoshimoto, R 2003, Damage assessment of base-isolated building using subspace identification approach. in WIT Transactions on the Built Environment. vol. 72, WITPress, pp. 179-189.
Mita A, Yoshimoto R. Damage assessment of base-isolated building using subspace identification approach. In WIT Transactions on the Built Environment. Vol. 72. WITPress. 2003. p. 179-189
Mita, Akira ; Yoshimoto, R. / Damage assessment of base-isolated building using subspace identification approach. WIT Transactions on the Built Environment. Vol. 72 WITPress, 2003. pp. 179-189
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