한국해안해양공학회지 (Journal of Korean Society of Coastal and Ocean Engineers)

한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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경사적 방파제의 간극수압 결정을 위한 수치해석

Numerical Analysis on the Determination of Pore Pressures inside Rubble Mound Breakwater

  • 전인식 (건국대학교 토목공학과) ;
  • 박현주 (신구대학 토목과) ;
  • 이달수 (한국해양연구원 연안·항만공학연구본부)
  • 발행 : 2002.06.01
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초록

경사식 방파제의 파동장 및 간극수압을 결정하기 위한 기존의 수치모델(박 등, 2002)을 개선하여 간극 수압의 예측성을 제고하기 위한 수치해석기법을 수립하였다. 내부 간극수압이 수치적 재현이 매우 어려운 전사면(前斜面) 비선형 파동장에 크게 의존함을 고려하여 본 수치해석에서는 수리실험을 통하여 前斜面 파압정보(진폭과 위상)를 도출, 수치해석에 입력하였다. 경계요소법을 이용하여 내부 파동장을 해석한 다음, 내부의 간극수압을 결정하였다. 기존의 계측결과와 비교한 결과, 계산치와 계측치의 일치 정도가 현저히 개선된 것으로 나타났다.

An existing numerical model fo r determining the wave field and pore pressures inside rubble mound breakwater was reformulated here especially to enhance the predictability of interior pore pressures. The pore pressures strongly depend on the nonlinear wave field occurring along frontal slope which is very difficult to be numerically reproduced. In the present study, hence, the amplitude and phase informations of wave pressures along the frontal slope are obtained directly through a hydraulic model test and are incorporated into the numerical model. The interior wave field is analyzed by a boundary element method, and thereby the pore pressures are determined. It was found that the calculated pore pressures agreed quite well with experimental values.

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참고문헌

  1. 한국해안 해양공학회지 v.14 no.1 경사식 방파제의 수리특성 결정을 위한 수치해석 박현주;전인식;이달수
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