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- Title
Fragility and Qualification of Components Using Censored Seismic Demand Data.
- Authors
Nafday, Avinash M.
- Abstract
Fragility functions are vital for the risk assessment of critical facilities and to calculate component probability of damage in performance-based earthquake engineering. Seismic qualification is used to prove the adequacy of components in existing facilities or to satisfy their design criteria in new facilities. This technical note describes an approach for component fragility development and seismic qualification using data for seismic demand experienced by similar components and their resulting performance. Depending on the observed component failure or survival, the seismic demand values either exceed or fall short of the random component capacity. The concept of censoring, which captures this excess or shortfall, is introduced to model such data and account for the different statistical characteristics of failure and survival data. The censored data are analyzed by survival analysis, which provides a rigorous and efficient approach to extract information from the data set.
- Publication
Earthquake Spectra, 2009, Vol 25, Issue 3, p719
- ISSN
8755-2930
- Publication type
Article
- DOI
10.1193/1.3158993