鋼製魚礁의 效率性에 關한 實驗的 硏究

An experimental study on the efficiency of artificial steel fish reef

All the artificial fish reefs which have been installed in Korea between 1971 and 1999 are made of reinforced concrete(RC). In general it takes about three years after installation to swarm fishes effectively. In addition, according to field investigations, the RC fish reefs often lose their functions due to damage during installation and insecurity to hydrodynamic forces generated by current and water waves. On the other hand, a different type of fish reef made with steel-framed structures, as an alternative of the RC reef, was developed in Japan about three decades ago. The steel fish reef has many advantages including: (1) capability of manufacturing in a large-scale, and (2) cost-effectiveness in comparison with the RC fish reef. In this study, a real-scale model consisting of steel-framed structures is fabricated in order to investigate and demonstrate efficiency of the steel fish reef, and installed in the vicinity of Sori island, Yosu, Chonnam, Korea. Then, its effect and durability have been investigated by periodic diving works.