ROCKING COLLISION OF WAVE-DISSIPATING CONCRETE BLOCK UNDER WAVE ACTION

Abstract

 A structural performance evaluation method for wave-dissipating concrete blocks has not yet been established. In this study, rocking collision of wave-dissipating concrete block under wave action was examined through model experiments with various wave conditions in order to clarify the characteristics of impact velocity and number of impacts. Based on the test results, the characteristics of impact velocity and number of impacts were clarified as follows. The impact velocity was approximately according to the normal distribution and affected by the wave celerity, the relative water depth and the wave height. The number of impacts was affected by the horizontal distance from the center of rotation to the gravity center of the block and the wave height. The formulae for estimating impact velocity and number of impacts were proposed.