直立防波堤に作用する衝撃砕波圧に関する研究

Abstract

Model experiments were carried out on the wave pressure acting on a vertical wall in orderto examine the height and the period of the waves that produce enormous impulsive wave pressures.The results show that the impulsive wave pressure is exerted when the wave breaks just infront of the wall in case of steep beach slope, and higher waves that break far from the wall produceless wave pressures.The results also indicate that the wave pressure is governed by the incident wave period, that is, larger wave pressure is produced by longer period waves. This reason is considered that the wavebreaking type is changed from the spilling breaker to the plunging breaker as the wave period be-comes longer.