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논문 기본 정보

자료유형
학술저널
저자정보
Kang, H.Y. (Ocean Engineering Program, Department of Civil Engineering, Texas A&M University) Kim, M.H. (Ocean Engineering Program, Department of Civil Engineering, Texas A&M University)
저널정보
테크노프레스 Ocean systems engineering Ocean systems engineering 제4권 제2호
발행연도
2014.1
수록면
99 - 115 (17page)

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초록· 키워드

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When caissons are mounted on a floating transportation barge and towed by a tug boat in waves, motion of the floating dock creates inertia and gravity-induced slip forces on the caisson. If its magnitude exceeds the corresponding friction force between the two surfaces, a slip may occur, which can lead to an unwanted accident. In oblique waves, both pitch and roll motions occur simultaneously and their coupling effects for slip and friction forces become more complicated. With the presence of strong winds, the slip force can appreciably be increased to make the situation worse. In this regard, the safety of the transportation process of a caisson mounted on a floating dock for various wind-wave conditions is investigated. The analysis is done by both frequency-domain approach and time-domain approach, and their differences as well as pros and cons are discussed. It is seen that the time-domain approach is more direct and accurate and can include nonlinear contributions as well as viscous effects, which are typically neglected in the linear frequency-domain approach.

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