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

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Comparison of Maximum Horizontal Wave Force Acting on Perforated Caisson Breakwater with Single and Double Chamber

단일 및 이중유수실 유공케이슨 방파제에 작용하는 최대 수평파력 비교

  • Oh, Sang-Ho (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology) ;
  • Ji, Chang-Hwan (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology) ;
  • Oh, Young Min (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology) ;
  • Jang, Se-Chul (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology) ;
  • Lee, Dal Soo (Hyein E&C, Research and Development Division)
  • 오상호 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 지창환 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 오영민 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 장세철 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 이달수 (혜인이엔씨 기술연구소)
  • Received : 2014.09.16
  • Accepted : 2014.10.27
  • Published : 2014.10.31
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Abstract

Physical experiments were carried out to measure the wave force on the vertical walls of perforated breakwater considering several phases of a wave acting on the breakwater. The maximum horizontal wave force acting on each vertical wall was compared between single and double chamber caisson breakwater. The experimental data in this study showed that the total horizontal wave force for double chamber caisson was 9.6% smaller on average than that for single chamber caisson when the total chamber width was the same for both caissons. Such reduction of the wave force is due to the dissipation of wave energy at the porous middle wall, which is located between the porous front wall and non-porous rear wall.

이 연구에서는 단면 수리모형실험을 통해 파의 여러 위상에 따라 단일 및 이중유수실 유공케이슨 방파제의 연직벽에 작용하는 최대 수평파력을 계측하고 그 크기를 서로 비교하였다. 본 실험 자료 분석 결과 이중유수실 케이슨의 유수실 전체 폭이 단일유수실의 폭과 동일한 경우 이중유수실 케이슨에 작용하는 총 수평파력이 평균적으로 9.6% 작은 것으로 나타났다. 이러한 파력 저감 효과는 이중유수실 케이슨 방파제의 유공 전면벽과 무공 후면벽 사이에 위치한 유공 중간벽에서 파 에너지가 소산되기 때문인 것으로 파악되었다.

Keywords

References

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  3. Franco, L., de Gerloni, M., Passoni, G., and Zacconi, D. (1998). "Wave forces on solid and perforated caisson breakwaters: comparison of field and laboratory measurements." Proc. 26th Int. Conf. Coast. Engrg., ASCE, pp. 1945-1958.
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Cited by

  1. Comparison of the Formulas for the Wave Forces Acting on the Perforated Caisson Breakwater vol.27, pp.4, 2015, https://doi.org/10.9765/KSCOE.2015.27.4.217
  2. Experimental Investigation for Evaluating Wave Forces on Perforated Caisson with Two Wave Chambers vol.27, pp.6, 2015, https://doi.org/10.9765/KSCOE.2015.27.6.443