Authors / CoAuthors
Luco, N. | Gerstenberger, M. | Uma, S.R. | Ryu, H. | Liel, A.B. | Raghunandan, M.
Abstract
This paper presents a methodology for post-earthquake probabilistic risk (of damage) assessment that we propose in order to develop a computational tool for automatic or semi-automatic assessment. The methodology utilizes the same so-called risk integral which can be used for pre-earthquake probabilistic assessment. The risk integral couples (i) ground motion hazard information for the location of a structure of interest with (ii) knowledge of the fragility of the structure with respect to potential ground motion intensities. In the proposed post-mainshock methodology, the ground motion hazard component of the risk integral is adapted to account for aftershocks which are deliberately excluded from typical pre-earthquake hazard assessments and which decrease in frequency with the time elapsed since the mainshock. Correspondingly, the structural fragility component is adapted to account for any damage caused by the mainshock, as well as any uncertainty in the extent of this damage. The result of the adapted risk integral is a fully-probabilistic quantification of post-mainshock seismic risk that can inform emergency response mobilization, inspection prioritization, and reoccupancy decisions.
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document
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144236
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Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
- ( Process )
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- probabilistic assessment
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- mainshock
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- building collapse
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- Published_External
Publication Date
2020-08-24T03:46:43
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Conference proceeding
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Proceedings of the Ninth Pacific Conference on Earthquake Engineering
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Peer reviewed paper, presented at the 9th Pacific Conference on Earthquake Engineering 2011 (PCEE), at The University of Auckland, 14 to 16 April 2011.
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