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Reliability Analyses of Breakwater Armor Blocks of Harbors in Korea  

Kim, Seung-Woo (Department of Civil and Environmental Engineering, Seoul National University)
Suh, Kyung-Duck (Department of Civil and Environmental Engineering, Seoul National University)
Lee, Cheol-Eung (Department of Civil Engineering, Kangwon National University)
Park, Dong-Heon (Department of Civil Engineering, Kangwon National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.21, no.1, 2009 , pp. 15-29 More about this Journal
Abstract
Most breakwater armor blocks are designed by using Hudson's or van der Meer's formula. The minimum weight of armor blocks is calculated by equating the resistance to the load in each formula. The larger value is then chosen as the design weight. In this study, we have performed reliability analyses for thus designed breakwater armor blocks of 12 trade harbors and 8 coastal harbors in Korea. The probability of failure calculated by the reliability analysis provides a criterion for evaluating the stability of armor blocks. The calculated probability of failure was almost same for all the breakwaters so that we were able to quantitatively evaluate the safety level of armor blocks of existing breakwaters. We also found that the safety factor used in the deterministic design method and the probability of failure in the reliability design method show a linear relationship. Therefore the probability of failure of existing breakwaters can be quantitatively calculated from the safety factors. The calculated probability of failure could also be used for determining the target probability of failure in the future.
Keywords
Breakwaters; Armor blocks; Reliability analysis; Probability of failure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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