Identification of the modal properties of the UCLA Factor Building, a 15-story steel moment-resisting frame, is performed using low-amplitude earthquake and ambient vibration data. The numerical algorithm for subspace state-space system identification is employed to identify the structural frequencies, damping ratios, and mode shapes corresponding to the first nine modes. The frequencies and mode shapes identified based on the data recorded during the 2004 Parkfield earthquake (Mw=6.0) are used to update a three-dimensional finite element model of the building to improve correlation between analytical and identified modal properties and responses. A linear dynamic analysis of the updated model excited by the 1994 Northridge earthquake is performed to assess the likelihood of structural damage.
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Research Article|
August 01, 2006
Identification, Model Updating, and Response Prediction of an Instrumented 15-Story Steel-Frame Building
Derek Skolnik, M.EERI
;
Derek Skolnik, M.EERI
a)
Graduate Student, Department of Civil & Environmental Engineering, University of California, Los Angeles, CA 90095
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Ying Lei, M.EERI
;
Ying Lei, M.EERI
b)
Postdoctoral scholar, Department of Civil & Environmental Engineering, University of California, Los Angeles, CA 90095
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Eunjong Yu, M.EERI
;
Eunjong Yu, M.EERI
b)
Postdoctoral scholar, Department of Civil & Environmental Engineering, University of California, Los Angeles, CA 90095
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John W. Wallace, M.EERI
John W. Wallace, M.EERI
c)
Professor, Department of Civil & Environmental Engineering, University of California, Los Angeles, CA 90095
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Earthquake Spectra (2006) 22 (3): 781–802.
Article history
received:
07 May 2005
accepted:
12 May 2005
first online:
01 Jun 2020
Citation
Derek Skolnik, Ying Lei, Eunjong Yu, John W. Wallace; Identification, Model Updating, and Response Prediction of an Instrumented 15-Story Steel-Frame Building. Earthquake Spectra 2006;; 22 (3): 781–802. doi: https://doi.org/10.1193/1.2219487
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Index Terms/Descriptors
- acceleration
- algorithms
- amplitude
- attenuation
- buildings
- California
- civil engineering
- correlation
- damage
- data processing
- earthquakes
- elastic waves
- fast Fourier transforms
- finite element analysis
- Fourier analysis
- ground motion
- instruments
- Los Angeles California
- Los Angeles County California
- Monterey County California
- Northridge California
- Northridge earthquake 1994
- numerical models
- Parkfield California
- Parkfield earthquake 2004
- peak ground acceleration
- prediction
- seismic response
- stiffness
- structures
- three-dimensional models
- United States
- vibration
Latitude & Longitude
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