由比海岸堤防の模型実験について

Abstract

The purpose of this model experiment is to obtain some fundamental data fordesigning the seawall at Yui Coast facing to Suruga Bay.As the first report on the model experiment, this paper deals with the wave over-topping on the seawall. In order to decide an effective arrangement of wave absorbingworks and an effective height of the seawall, some experiments have been carried outby using the model of the seawall to horizontal and vertical scales of 1/25 based onthe Froude similitude.The main results of the experiment are suminerized as follows:1. The rate of wave overtopping on the seawall changes with the wave height ofincident waves having a constant period, and in this case, a maximum rate of waveovertopping generally exists.2. The maximum rate of wave overtopping decreases rapidly with decrease in thewater depth in front of the seawall.3. In such a model experiment, it is necessary to disclose the influence of irregu-larity of incident waves on the wave overtopping on a seawall.4. In order to decrease the rate of wave overtopping, it will be the most effectiveprocedure to make shallow the water depth in front of the seawall.