Estimating structural collapse fragility of generic building typologies using expert judgment

By: , and 
Edited by: George DeodatisBruce R. Ellingwood, and Dan M. Frangopol



The structured expert elicitation process proposed by Cooke (1991), hereafter referred to as Cooke’s approach, is applied for the first time in the realm of structural collapse-fragility assessment for selected generic construction types. Cooke’s approach works on the principle of objective calibration scoring of judgments coupled with hypothesis testing used in classical statistics. The performance-based scoring system reflects the combined measure of an expert’s informativeness about variables in the problem area under consideration, and their ability to enumerate, in a statistically accurate way through expressing their true beliefs, the quantitative uncertainties associated with their assessments. We summarize the findings of an expert elicitation workshop in which a dozen earthquake-engineering professionals from around the world were engaged to estimate seismic collapse fragility for generic construction types. Development of seismic collapse fragility functions was accomplished by combining their judgments using weights derived from Cooke’s method. Although substantial effort was needed to elicit the inputs of these experts successfully, we anticipate that the elicitation strategy described here will gain momentum in a wide variety of earthquake seismology and engineering hazard and risk analyses where physical model and data limitations are inherent and objective professional judgment can fill gaps.
Publication type Conference Paper
Publication Subtype Conference Paper
Title Estimating structural collapse fragility of generic building typologies using expert judgment
ISBN 9781138000865
DOI 10.1201/b16387-130
Year Published 2014
Language English
Publisher CRC Press
Contributing office(s) Geologic Hazards Science Center
Description 8 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Safety, reliability, risk, and life-cycle performance of structures and infrastructures
First page 879
Last page 886
Conference Title 1th International Conference on Structural Safety and Reliability (ICOSSAR2013)
Conference Location New York, NY
Conference Date June 16-20, 2013
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