회절효과를 고려한 장대형 이안제에 작용하는 랜덤파랑하중

Title
회절효과를 고려한 장대형 이안제에 작용하는 랜덤파랑하중
Alternative Title
RANDOM WAVE LOADS ON A LONG DETACHED BREAKWATER CONSIDERING DIFFRACTION
Author(s)
이창훈; 정재상; 박우선; 조용식
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2013-09-27
Abstract
Battjes (1982) found the loads of short-crested random waves on a long structure decrease with the structure length and also with the obliqueness of wave incidence. These decreases come from the spatial phase difference along the structure. Lee et al. (2010) found that obliquely incident random waves in a nearshore area become directionally asymmetric due to refraction. They also found the asymmetry becomes more significant in shallower waters. Recently, Jung et al. (2011) studied random wave loads on a long structure considering diffraction and directional asymmetry. In this study, we further study random wave loads on a detached breakwater considering diffraction of waves which propagate at both ends of the breakwater. We also consider directional asymmetry. The structure may be placed along the bottom contours in order to protect on-shore incoming waves. In that case, refraction-induced random waves may become asymmetric, i.e., on-shore components are more dominant than along-shore ones. Therefore, directional obliqueness on the structure becomes less and thus the wave loads decrease in less degree than the symmetric waves. When waves are obliquely incident on a long structure, the diffracting waves give forces on the lee side of the structure. The diffracting wave has a spatial phase variation along the lee side which is different from that the obliquely incident wave has on the front side. Thus, the wave loads decrease with the existence of diffracting waves and also the phase difference between the incident and diffracting waves.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26763
Bibliographic Citation
Proceedings of the 7th International Conference on Asian and Pacific Coasts, pp.671 - 676, 2013
Publisher
APAC
Type
Conference
Language
English
Publisher
APAC
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

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