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Geosciences 2018, 8(1), 16; https://doi.org/10.3390/geosciences8010016

Earthquake Magnitude and Shaking Intensity Dependent Fragility Functions for Rapid Risk Assessment of Buildings

1
École de Technologie Supérieure, Montréal, QC H3C 1K3, Canada
2
Geological Survey, Natural Ressources Canada, Quebec City, QC G1K 9A9, Canada
*
Author to whom correspondence should be addressed.
Received: 18 November 2017 / Revised: 5 January 2018 / Accepted: 7 January 2018 / Published: 9 January 2018
(This article belongs to the Special Issue Natural Hazards and Risks Assessment)
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Abstract

An integrated web application, referred to as ER2 for rapid risk evaluator, is under development for a user-friendly seismic risk assessment by the non-expert public safety community. The assessment of likely negative consequences is based on pre-populated databases of seismic, building inventory and vulnerability parameters. To further accelerate the computation for near real-time analyses, implicit building fragility curves were developed as functions of the magnitude and the intensity of the seismic shaking defined with a single intensity measure, input spectral acceleration at 1.0 s implicitly considering the epicentral distance and local soil conditions. Damage probabilities were compared with those obtained with the standard fragility functions explicitly considering epicentral distances and local site classes in addition to the earthquake magnitudes and respective intensity of the seismic shaking. Different seismic scenarios were considered first for 53 building classes common in Eastern Canada, and then a reduced number of 24 combined building classes was proposed. Comparison of results indicate that the damage predictions with implicit fragility functions for short (M ≤ 5.5) and medium strong motion duration (5.5 < M ≤ 7.5) show low variation with distance and soil class, with average error of less than 3.6%. View Full-Text
Keywords: seismic risk; earthquake magnitude; seismic shaking; vulnerability; fragility curve; building classification seismic risk; earthquake magnitude; seismic shaking; vulnerability; fragility curve; building classification
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Nollet, M.-J.; Abo El Ezz, A.; Surprenant, O.; Smirnoff, A.; Nastev, M. Earthquake Magnitude and Shaking Intensity Dependent Fragility Functions for Rapid Risk Assessment of Buildings. Geosciences 2018, 8, 16.

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