Changes in the Dynamic Properties of an Experimental Building by Ambient Vibration and Forced Vibration Analysis
Journal: Journal of Building Technology DOI: 10.32629/jbt.v7i2.3982
Abstract
In this paper, ambient and forced vibration records are analyzed to determine the dynamic properties (mode shapes and characteristic frequencies) of a five-story experimental building constructed at full scale within the Charles Lee Powell Laboratory at the University of California, San Diego (UCSD). This was the first full-scale building, built in 1992, to perform seismic resistance testing in the United States. Vibration records were obtained during the three stages of the building's physical conditions: a newly constructed building, a damaged building with simulated seismic loading, and a repaired building. Both ambient and forced vibration analysis results show changes in its dynamic properties due to stiffness degradation in the damaged building and stiffness recovery in the repaired building.
Keywords
experimental building; Charles Lee Powell laboratory; ambient vibration; forced vibration; modal forms; characteristic frequencies
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[14] Souici, R., Ait-Meziane, Y., y Benouar, D. (2021). "Identification of vibration direction of existing buildings using ambient vibration noise tests", Arabian Journal of Geosciences,14(1), 1-12. DOI: 10.1007/s12517-020-06306-6.
[15] Weeks J., Seible F., Hegemier G., y Priestley M.J.N. (1994). "The U.S.-TCCMAR Full-scale five-story masonry research building test. Part V - Repair and Retest. Report No. SSRP-94/05". Department of Applied Mechanics and Engineering Sciences, University of California, San Diego. 115 pp.
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