사석경사제 호안의 월파특성

Abstract

사석식경사제 호안에 있어 국내외 설계기준 및 모형실험에 의한 월파경향을 사석피복층별 및 피복재 종류별로 살펴보고, 국내 설계기준의 적용한계성 고찰 및 국외설계기준의 소개 및 향후 개선방안에 대한 문제 제기를 하였음; Determination of allowable overtopping rate for coastal structure is a key point to determine the application of background of coastal structure while considering safety and economic efficiency. Thus, the accurate estimation of overtopping rate against coastal structure is essential. In general, estimation of overtopping against the coastal structure is based on an empirical formula or hydraulic experiment. In this study, we investigate the behavior of overtopping for rubble mound coastal structure with rubble armor stone and wave dissipating block using hydraulics experiment, and domestic or foreign design standard. From the experimental study and design standard about the rubble mound, it was found that a double armor layer is superior to a single layer to protect coastal structure from wave overtopping. Goda’s formula introduced in domestic design standard is not adequate for coastal structure with rubble armor and has narrow application for wave steepness. Moreover, Goda’s formula underestimates an overtopping rate comparing with foreign design standard or experiment result. Therefore, we also provided an improvement plan for this problem.