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http://dx.doi.org/10.7734/COSEIK.2016.29.2.115

Improvement in Safety Evaluation of Structures using the Bayesian Updating Approach  

Park, Kidong (Safety & Environment Division, Samsung Engineering)
Lee, Sangbok (Safety & Environment Division, Samsung Engineering)
Kim, Junki (Safety & Environment Division, Samsung Engineering)
Rha, Changsoon (Dept. of Architecture, Kookmin Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.29, no.2, 2016 , pp. 115-122 More about this Journal
Abstract
The classical statistical approach using test data samples to estimate true value of Random Variables by calculating mean and variation (standard deviation or coefficient of variation) of samples is very useful to understand the existing condition of the structure. But with this classical approach, our prior knowledge through educational background and professional experience cannot provide any benefit to make decisions by the structural engineers. This paper shows the role of Bayesian methodology by providing chance of using valuable prior knowledge to come up with more accurate estimation of structural condition. This paper also shows how important it is to have a proper prior estimate of Random Variables and corresponding confidence level through gathering and studying more relevant information.
Keywords
bayesian updating; safety evaluation; reliable index; nested random variable; prior estimate;
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