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FRACAS: A capacity spectrum approach for seismic fragility assessment including record-to-record variability

Rossetto, T; Gehl, P; Minas, S; Douglas, J; Duffour, P; Galasso, C; (2016) FRACAS: A capacity spectrum approach for seismic fragility assessment including record-to-record variability. Engineering Structures , 125 pp. 337-348. 10.1016/j.engstruct.2016.06.043. Green open access

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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 to properly translate this into the resulting fragility curves.

Type: Article
Title: FRACAS: A capacity spectrum approach for seismic fragility assessment including record-to-record variability
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.engstruct.2016.06.043
Publisher version: http://dx.doi.org/10.1016/j.engstruct.2016.06.043
Language: English
Additional information: Copyright © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
Keywords: Capacity spectrum method; Record-to-record variability; Fragility curve
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1521044
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