한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제14권6호
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  • Pages.3074-3080
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  • 2013
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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경사식구조물 오목부 구간의 파랑증폭 실험

Hydraulic experiments on wave amplification at concave corner for rubble mound structures

  • 김영택 (한국건설기술연구원 하천해안연구실) ;
  • 안창현 (한국건설기술연구원 하천해안연구실) ;
  • 이종인 (전남대학교 해양토목공학과)
  • Kim, Young-Taek (River and Coastal Research Division, Korea Institute of Construction Technology) ;
  • Ahn, Chang-Hyun (River and Coastal Research Division, Korea Institute of Construction Technology) ;
  • Lee, Jong-In (Department of Marine and Civil Engineering, Chonnam National University)
  • 투고 : 2013.03.29
  • 심사 : 2013.06.07
  • 발행 : 2013.06.30
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초록

평면 수리실험을 통해 경사식구조물의 오목부 구간에 대한 파고 증폭을 검토하였다. 실험에 적용된 경사식 구조물 단면은 1:1.5의 경사면에 테트라포드가 2층 피복되어 있는 형상이다. 실험파는 Bretschneider-Mitsuyasu 스펙트럼을 적용한 불규칙파를 적용하였으며, 오목부의 중심각도는 $120^{\circ}$, $140^{\circ}$와$160^{\circ}$를 적용하였다. 실험결과에 따르면 오목부 구간에서의 입사파고에 대한 파고증폭비는 본 실험에서 적용한 실험조건 내에서 최대 1.5배로 계측되었으며, 상대파고비의 분포형태는 오목부의 중심에서 최대가 되고, 오목부를 중심으로 거리가 멀어질수록 감소했다 다시 증가하는 형태인 W자 형태를 나타내었다.

Amplification of wave height at concave corner was investigated by three dimensional hydraulic tests. A typical rubble mound structure was tested with two-layer Tetrapod and the slope of 1:1.5. The irregular waves with Bretschneider-Mitsuyasu spectrum were applied to the tests. The center angles of concave corner were 120 degree, 140 degree and 160 degree. According to the test results, the maximum wave height amplification ratio at concave corner was about 1.5 times of incident wave height among the all test conditions, and the W-shaped wave height distribution was shown.

키워드

참고문헌

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