Nonlinear Uplift Wave Pressure Distribution Acting on the Caisson of Composite Breakwater

J. Ocean Eng. Technol. 2001;15(4):20-27.

혼성방파제의 케이슨에 작용하는 비선형양압력분포에 관한 연구

김도삼,배기성

한국해양대학교 토목환경공학부,경상대학교 토목환경공학부(해양산업연구소)

Keywords: Vertical caisson of composite breakwater, Boundary integral method, Nonlinear uplift pressure

핵심용어: 혼성방파제의 직립케이슨, 경계적분법, 비선형 양압력

Abstract

Recently numerical approaches for wave loads acting on the vertical caisson of breakwater, and resulting wave reflection and transmission coefficients have been performed. Although the numerical studies by Sulisz's(1997) and Kim et al.(2000) are suggested representatively, theoretical formulation for nonlinear wave pressure is not developed yet. And experimental results of Sulisz(1997) revealed that nonlinear uplift pressure on the caisson may be produced largely on the case of caisson founded on the high rubble mound. From the results of this study, the nonlinear theory for the uplift wave pressure acting on the caisson by applying boundary integral method of Green theorem is formulated, and also the characteristics of nonlinear uplift pressure and run-up height on the caisson are evaluated numerically, according to the variations of hydraulic properties of the rubble mound.