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Time and frequency domain identification of seismically isolated structures: advantages and limitations

Time and frequency domain identification of seismically isolated structures: advantages and limitations

Kampas, Georgios and Makris, Nicos (2012) Time and frequency domain identification of seismically isolated structures: advantages and limitations. Earthquakes and Structures, 3:3-4. pp. 249-270. ISSN 2092-7614 (doi:10.12989/eas.2012.3_3.249)

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Abstract

This paper investigates the effectiveness of widely used identification methods to identify the response of seismically isolated structures supported on bearings with bilinear behavior. The paper shows that while both time domain and frequency domain methods predict with high accuracy the modal characteristics of structures isolated by linear isolation system, their performance degrades appreciably when the isolation system exhibits bilinear behavior even when its strength assumes moderate values (say 5% of the weight). The paper also shows that the natural period of isolated structure that results from bilinear isolation systems can be satisfactorily predicted with wavelet analysis.

Item Type: Article
Uncontrolled Keywords: seismic isolation; bilinear behavior; system identification; wavelet analysis
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Centre for Innovative & Smart Infrastructure
Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 28 Mar 2018 10:56
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/19472

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