Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 337-348 |
| Number of pages | 12 |
| Journal | Engineering Structures |
| Volume | 125 |
| Early online date | 25 Jul 2016 |
| DOIs | |
| Publication status | E-pub ahead of print - 25 Jul 2016 |
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Keywords
- capacity spectrum method
- record-to-record variability
- fragility curve
- earthquake engineering
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FRACAS: a capacity spectrum approach for seismic fragility assessment including record-to-record variability. / Rossetto, Tiziana; Gehl, Pierre; Minas, Stylianos; Galasso, Carmine; Duffour, Philippe; Douglas, John; Cook, Oliver.
In: Engineering Structures, Vol. 125, 25.07.2016, p. 337-348.Research output: Contribution to journal › Article
TY - JOUR
T1 - FRACAS: a capacity spectrum approach for seismic fragility assessment including record-to-record variability
AU - Rossetto, Tiziana
AU - Gehl, Pierre
AU - Minas, Stylianos
AU - Galasso, Carmine
AU - Duffour, Philippe
AU - Douglas, John
AU - Cook, Oliver
PY - 2016/7/25
Y1 - 2016/7/25
N2 - 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.
AB - 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.
KW - capacity spectrum method
KW - record-to-record variability
KW - fragility curve
KW - earthquake engineering
UR - http://www.sciencedirect.com/science/article/pii/S0141029616303145
U2 - 10.1016/j.engstruct.2016.06.043
DO - 10.1016/j.engstruct.2016.06.043
M3 - Article
VL - 125
SP - 337
EP - 348
JO - Engineering Structures
JF - Engineering Structures
SN - 0141-0296
ER -