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Proceedings Article

Correlation between damage detection and observed damage for a full-scale four-story steel building during the collapse test

[+] Author Affiliations
Liu Mei, Akira Mita

Keio Univ. (Japan)

Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79842N (April 18, 2011); doi:10.1117/12.880211
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From Conference Volume 7984

  • Health Monitoring of Structural and Biological Systems 2011
  • Tribikram Kundu
  • San Diego, California, USA | March 06, 2011

abstract

A full-scale four-story steel building was tested on the shaking table of the E-defense project on September, 2007. During the shaking table tests, the building was damaged progressively through various levels of seismic excitations, and finally collapsed on the first floor. To evaluate the modal parameters, low-amplitude white noise excitations were applied to the building and the response of the building was measured at various levels of damage due to the seismic excitations. The subspace identification method is then applied to identify the modal parameters of the building based on the measured data. This paper focuses on detecting damage of this building based on changes in identified modal parameters. A finite element model updating strategy is applied to identify (detect, localize and quantify) the damage in the building at each damage state considered. The residuals used in the updating procedure are based on the identified natural frequencies and mode shapes for the first two X direction and Y direction vibration modes of the building. At last the correlation between the damage detection results and the actual damage observed in the building is carefully examined. They do not exactly coincide but the concentration regions of damage are highly consistent with each other.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Liu Mei and Akira Mita
"Correlation between damage detection and observed damage for a full-scale four-story steel building during the collapse test", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79842N (April 18, 2011); doi:10.1117/12.880211; http://dx.doi.org/10.1117/12.880211


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