Journal of Coastal Disaster Prevention (한국연안방재학회지)

Korean Society of Coastal Disaster Prevention (한국연안방재학회)
권호 표지

A Case Study of Comparing Formulae for Estimating Horizontal Wave Force on Crown Wall of Sloping Breakwater

경사식 방파제 상부구조물 작용 수평파력 산정식 비교 사례 연구

  • Oh, Sang-Ho (Coastal Development and Ocean Energy Research Department, Korea Institute of Ocean Science and Technology) ;
  • Oh, Young Min (Coastal Development and Ocean Energy Research Department, Korea Institute of Ocean Science and Technology) ;
  • Yeo, Bong-Gu (Sekwang Engineering Consultants, Co.) ;
  • Han, Tae-Young (Sekwang Engineering Consultants, Co.)
  • 오상호 (한국해양과학기술원 연안개발에너지연구부) ;
  • 오영민 (한국해양과학기술원 연안개발에너지연구부) ;
  • 여봉구 ((주)세광종합기술단) ;
  • 한태영 ((주)세광종합기술단)
  • Received : 2014.01.03
  • Accepted : 2014.01.13
  • Published : 2014.01.31

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Abstract

This study investigated the applicability of four empirical equations (Morihira et al., 1967; Goda, 2010; Jensen, 1984 and Bradbury et al., 1988; Pedersen, 1996) suggested for estimating the horizontal wave force on the crown wall of sloping breakwaters. For the two exemplary cross sections of the breakwaters whose geometry are apparently different each other, the estimates of horizontal wave force calculated by the four equations were compared. The values of estimated wave force showed considerable discrepancy among the equations for each of the two exemplary breakwater cross sections, respectively. In addition, the relative magnitude of the wave force was quite different according to the breakwater geometry as well as the design wave condition. In general, Morihira's or Goda's formulae produced larger estimates of the horizontal wave force than Jensen/Bradbury's or Pedersen's formulae if the wave period (or wavelength) is comparatively short. In contrast, exactly opposite result was obtained when the wave period or wavelength is comparatively long. Further detailed study based on physical experiments is required to examine the applicability of the four empirical equations considered in this study more thoroughly.

Keywords

Acknowledgement

본 연구는 한국해양과학기술진흥원의 첨단항만건설기술개발사업 「기후변화대응 항만설계기준 개선 방안연구(1단계) - 유공케이슨 및 상부구조물 작용파압 평가 (PM57800)」의 지원을 받아 수행되었습니다.