Nghiên cứu đặc tính phản xạ của kết cấu tiêu sóng đặt tại đỉnh đê biển trên mô hình vật lý

Abstract

The Hollow Cylindrical Breakwater,which is located on the top of the sea dike, is a new structure proposed to apply to sea dykes in areas where soil is scarce or to be built on soft ground in Mekong Delta. The structure is in quater-circular shape, with perforated surface to absorb incoming wave energy, reduce reflected wave energy and overtopping wave energy. This paper presents some results of wave reflection characteristics of this structure on the physical model. The results show that the wave reflection coefficient (Kr) decreases as the water depth increases and the pore area on the surface of the structure increases. In case of 10% perforated surface, Kr max = 0.63 while Kr min = 0.37 with surface porosity is 20% in all experimental scenarios.