Investigating the use of record-to-record variability in static capacity approaches
Gehl, Pierre and Douglas, John and Rossetto, Tiziana and Macabuag, Joshua and Nassirpour, Arash and Minas, Stylianos and Duffour, Philippe; Beer, Michael and Au, Siu-Kui and Hall, Jim W., eds. (2014) Investigating the use of record-to-record variability in static capacity approaches. In: Vulnerability, Uncertainty, and Risk. American Society of Civil Engineers (ASCE), GBR, pp. 1675-1684. ISBN 9780784413609 (https://doi.org/10.1061/9780784413609.168)
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Abstract
In performance-based earthquake engineering, fragility curves constitute an essential component, providing a probabilistic link between the earthquake intensity measure and the structural response, expressed as an engineering demand parameter. In this study, we apply a capacity spectrum method that uses inelastic response spectra derived from earthquake accelerograms to construct fragility curves for an example reinforced concrete structure. This approach has the advantage of simplicity and rapidity over methods using the accelerograms directly. Various sets of scaled and unscaled accelerograms are used to investigate the impact of record-to-record variability on the derived curves. It is found that the variability in the input spectra at periods longer than the natural period of the undamaged structure has a direct impact on the standard deviation associated with the curves. When the spectra closely match a target, the curves are almost vertical (small standard deviations); but, as the variation around the target increases ,the curves become flatter (high standard deviations). A variant of the peak-to-trough measure introduced by Stafford and Bommer (2010) provides a useful way of measuring the variability in the input spectra.
ORCID iDs
Gehl, Pierre, Douglas, John ORCID: https://orcid.org/0000-0003-3822-0060, Rossetto, Tiziana, Macabuag, Joshua, Nassirpour, Arash, Minas, Stylianos and Duffour, Philippe; Beer, Michael, Au, Siu-Kui and Hall, Jim W.-
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Item type: Book Section ID code: 66033 Dates: DateEvent7 July 2014PublishedNotes: This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://doi.org/10.1061/9780784413609.168 Subjects: Technology > Engineering (General). Civil engineering (General) Department: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 08 Nov 2018 10:17 Last modified: 16 Oct 2024 00:11 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/66033