FRACAS: a capacity spectrum approach for seismic fragility assessment including record-to-record variability
Rossetto, Tiziana and Gehl, Pierre and Minas, Stylianos and Galasso, Carmine and Duffour, Philippe and Douglas, John and Cook, Oliver (2016) FRACAS: a capacity spectrum approach for seismic fragility assessment including record-to-record variability. Engineering Structures, 125. pp. 337-348. ISSN 0141-0296 (https://doi.org/10.1016/j.engstruct.2016.06.043)
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Abstract
This paper presents a new approach for the derivation of fragility curves, named FRAgility through Capacity spectrum ASsessment (FRACAS). FRACAS adapts the capacity spectrum assessment method and uses inelastic response spectra derived from earthquake ground motion accelerograms to construct fragility curves. Following a description of the FRACAS approach, the paper compares the predicted maximum interstory drift (MIDR) response obtained from FRACAS and nonlinear time history analyses (NLTHA) for two case-study buildings subjected to 150 natural accelerograms. FRACAS is seen to represent well the response of both case-study structures when compared to NLTHA. Observations are made as to the sensitivity of the derived fragility curves to assumptions in the capacity spectrum assessment and fragility curve statistical model fitting. The paper also demonstrates the ability of FRACAS to capture inelastic record-to-record variability and properly translate this into resulting fragility curves. In particular, through an example application, it is shown that the variability in spectral ordinates for periods beyond the natural period of the undamaged structure is directly correlated to the standard deviations of the fragility curves.
ORCID iDs
Rossetto, Tiziana, Gehl, Pierre, Minas, Stylianos, Galasso, Carmine, Duffour, Philippe, Douglas, John ORCID: https://orcid.org/0000-0003-3822-0060 and Cook, Oliver;-
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Item type: Article ID code: 56865 Dates: DateEvent25 July 2016Published25 July 2016Published Online27 June 2016AcceptedSubjects: Technology > Engineering (General). Civil engineering (General) Department: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 07 Jul 2016 09:19 Last modified: 11 Oct 2024 00:24 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/56865