Experimental Study on Hydraulic Performance of Tiecell Caisson Breakwater with Wave Chamber

Recently, a perforated caisson breakwater with tiecell blocks was developed to improve a water affinity and people's safety of a rubble mound armoured by tetrapods. In this study, hydraulic model tests were performed to examine the hydraulic performance of a non-porous and a tiecell caissons with perforated blocks attacking wave against a small fishery harbor near Busan. The model test results show that the tiecell caisson is more effective in dissipating wave energy under normal wave conditions and in reducing wave overtopping rates under design wave conditions than the non-porous caisson. It is found that the horizontal wave forces acting on the tiecell caisson show slightly more large than the non-porous caisson due to the impulsive force generated in the wave chamber.