DEFORMATION-BASED RELIABILITY DESIGN OF BREAKWATER CAISSON CONSIDERING VARIABILITY IN WAVE DIRECTION

摘要

In this study, the reliability design method developed by Shimosako and Takahashi in 1999 forrncalculation of the expected sliding distance of the caisson of a vertical breakwater is extended torntake into account the variability in wave direction. The effects of directional spreading and thernvariation of deepwater principal wave direction about its design value are found to be minorrncompared with those of the obliquity of the deepwater design principal wave direction from thernshore-normal direction. When we use the field data in a part of the east coast of Korea, taking thernvariability in wave directions into account reduces the required caisson width by about 10 % atrnthe maximum compared with that calculated without taking directional variability into account.