PROPERTIES OF THE WAVE FORCE ACTS ON THE CONCRETE BLOCKS AS ARTIFICAL ALGAE REEFS

Abstract

 Concrete blocks have been constructed alone in the bottom of the sea to build artificial algae reefs. In this study, Clarify the properties of the wave force acts on the concrete blocks in actual survey by the physical model experiment. As a result, as for the blocks, resistance force (F₀) which decreased by lift force (F_Z) is less than drag force (F_x), it make slide and move. Wave force calculated by Morison eq. (evaluated from experiment) almost accords with measured value (F_xmax).