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Reliability Analysis and Evaluation of Partial Safety Factors of Breakwater Armor stones Considering Correlation between Wave Height and Wave Steepness  

Kim, Seung-Woo (School of Civil and Environmental Engineering, Seoul National University)
Suh, Kyung-Duck (School of Civil and Environmental Engineering, Seoul National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.20, no.3, 2008 , pp. 300-309 More about this Journal
Abstract
The partial safety factors of armor stones have been calculated on the assumption that all random variables are independent one another. However, wave height and wave steepness are not independent in the van der Meer's formula of armor stones but they are correlated. In the present study, we calculated the partial safety factors considering the correlation and compared them with those of other researchers who did not consider the correlation. The correlation between wave height and steepness is closely related to the variability of wave period. As the variability of wave period decreases, the correlation between wave height and steepness becomes strong, and hence the calculation results with and without consideration of the correlation show more difference. Therefore, the correlation should be taken into account in the calculation of partial safety factors in the area where the variability of wave period is small.
Keywords
Partial safety factor; correlation; influence factor; reliability index;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 서경덕, 권혁동, 이동영(2008). 한반도 주변 심해파의 통계적 특성, 제2회 항만구조물 신뢰성 설계법 기술교육 위크샵, 항 만구조물 신뢰성 설계 연구단, 도서출판 씨아이알, 107- 124
2 Burcharth, H.F. (1992). Reliability evaluation of a structure at sea, Proc. 23rd. Int. Conf. on Coastal Engineering, ASCE, NewYork, 511-545
3 Goda, Y. (2003), Revisiting Wilson's formulas for simplified wind-wave prediction, J. Waterway, Port, Coastal and Ocean Engrg., ASCE, 129(2)
4 Qie, L. and Cai, S. (2007). Determination of partial coefficients for reliability of semi-circular breakwaters, Proc. of Asian and Pacific Coasts 2007, Nanjing, 1736-1747
5 김승우, 서경덕 (2005). 동해항 방파제를 대상으로 한 신뢰 성 설계법의 비교 연구. 1. 피복 블록의 안정성, 한국해안해양공학회지, 17(3), 188-201
6 이철응 (2007). 피복재의 부분안전계수 산정, 한국해안해양공학회지, 19(4), 336-344   과학기술학회마을
7 Rackwitz, R. (1976). Practical probabilistic approach to design, Bulletin 112, Comite European du Beton, Paris, France
8 Zhao, G., Jin, W. and Gong, J. (2000). Theory of structural reliability, China Construction Press, Beijing (in Chinese)
9 van der Meer, J.W. (1987). Stability of breakwater armor layers design formulae, Coastal Engrg., 11, 219-239   DOI   ScienceOn
10 Burcharth, H.F. (1991). Introduction of partial coefficient in the design of rubble mound breakwaters, Proc. Coastal Structures Breakwaters, Institution of Civil Engineers, London, 543-565
11 Yoshioka, T. and Nagao, T. (2005). Level-1 reliability-based design method for gravity-type special breakwaters, Research report of NILIM
12 Burcharth, H.F. and Sorenson, J.D. (2000). The PIANC safety factor system for breakwaters, Proc. Coastal Structures '99, Spain, 1125-1144
13 van der Meer, J.W. (1988). Deterministic and probabilistic design of breakwater armor layers, J. Waterway, Port, Coastal and Ocean Engrg., ASCE, 114(1), 66-80   DOI   ScienceOn