Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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An Experimental Study on the Effects of Perforated Floating Structures and Submerged Plates for Wave Control and Motion Reduction of Pile-Moored Floating Piers

말뚝계류 부잔교의 파랑제어 및 동요저감을 위한 유공구조 부유체와 몰수판 효과에 관한 실험적 연구

  • Chae-Won Kwon (Dept. of Civil Engineering, National Korea Maritime and Ocean University) ;
  • Su-Young Lee (Dept. of Civil Engineering, National Korea Maritime and Ocean University) ;
  • Do-Sam Kim (Dept. of Civil Engineering, National Korea Maritime and Ocean University) ;
  • Kwang-Ho Lee (Dept. of Civil Engineering, Korea Maritime and Ocean University)
  • 권채원 (국립한국해양대학교 대학원 토목공학과) ;
  • 이수영 (국립한국해양대학교 대학원 토목공학과) ;
  • 김도삼 (국립한국해양대학교 토목공학과) ;
  • 이광호 (국립한국해양대학교 토목공학과)
  • Received : 2024.06.12
  • Accepted : 2024.06.25
  • Published : 2024.06.30
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Abstract

The floating pier is a representative type of floating structure installed along the coast, primarily used as a facility for berthing and mooring ships. Additionally, ongoing attempts have been made to utilize it for various purposes, such as wave control and wave energy conversion structures. In this study, we experimentally investigated the reflection and motion characteristics of a pile-moored floating pier, which allows heave and limited roll motion, with respect to the presence of perforated structures and the attachment of submerged plates. The hydraulic experiment results indicated that the reflection and motion characteristics of the pile-moored floating pier were significantly influenced by the presence and installation depth of the submerged plates, rather than the presence of perforated structures on the floating body. In particular, the installation of submerged plates increased the reflection coefficient in short-period waves and effectively reduced the heave and roll motions of the floating body.

부잔교는 연안에 설치되는 대표적인 부유식 구조물로 선박의 접안 및 계류시설로 주로 활용되고 있으나, 파랑제어 및 파력발전 구조체와 같은 다양한 목적으로 활용하려는 시도가 계속되고 있다. 본 연구에서는 상하동요와 제한된 횡동요만을 허용하는 말뚝계류 부잔교를 대상으로 부유체의 유공구조 및 몰수판 부착에 따른 반사특성 및 동요특성을 실험적으로 검토하였다. 수리실험결과, 말뚝계류된 부잔교의 반사특성과 동요특성은 뷰유체의 유공구조 유무에 비해 몰수판의 설치 유무와 설치수심에 크게 의존함을 확인하였다. 특히, 몰수판의 설치는 단주기 파랑에서 반사계수를 증가시키고, 부유체의 상하동요 및 횡동요를 감소시키는 효과가 있었다.

Keywords

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