Abstract
A model experiment was conducted in a wave basin for the purpose of understanding the reflection characteristics and wave overtopping characteristics of the slit caisson with respect to the obliquely incident waves. At the same time, the method of measuring and analyzing the reflection coefficient of obliquely incident waves in the three-dimensional model experiment was examined. The two points wave gauge method, and the one point wave and current gauge method were applied to the wave reflection analysis. The accuracy of the wave reflection analysis was improved by using wave data considering the difference in wave height that occurs in the experimental area. Experiments were conducted with three types of incident angles: 0°(perpendicular), 20° and 39°, and it was found that there is no significant difference from the reflection coefficient of perpendicular incidence and in the case of oblique incidence. In addition, it was confirmed that the reduction in wave overtopping by the slit wall could not be obtained under the condition that the slit wall was almost submerged, and it was found that the wave overtopping quantity can be estimated from the calculation chart of Goda et al. by treating it as an upright wall.
