Open AccessAdjusting Fragility Analysis to Seismic Hazard Input
Author(s) -
JensUwe Klügel,
Richard Attinger,
Shobha B. Rao
Publication year - 2010
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.332
H-Index - 18
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2010.p0395
Subject(s) - fragility , seismic hazard , incremental dynamic analysis , hazard , seismology , probabilistic logic , nuclear power plant , seismic risk , hazard analysis , earthquake scenario , spectral acceleration , geology , reliability engineering , peak ground acceleration , statistics , engineering , mathematics , physics , chemistry , organic chemistry , nuclear physics , ground motion , thermodynamics
This paper shows that the results of contemporary probabilistic seismic hazard analysis (PSHA), uniform hazard spectra, and hazard curves are inconsistent with the fragilitymethod used for seismic probabilistic risk assessment (PRA). The calculation used in PSHA is based on the evaluation of the probability of exceeding specified acceleration levels without considering the damaging effects of earthquakes. Empirical fragility of structures and components derived from field observations or qualification tests is conditioned to model large earthquakes, so fragility analysis must be adjusted to correspond with PSHA hazard estimates. Adjustment based on energy absorption principles is presented in the sections that follow, andmacroseismic information from intensity is used for verification. The procedure suggested was applied in seismic probabilistic risk assessment for the Goesgen, Switzerland, nuclear power plant (NPP).