【作者】 程俊峰； 李金宣； 柳淑学；

【Author】 Cheng Junfeng;Li Jinxuan;Liu Shuxue;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology;

【机构】 大连理工大学海岸与近海工程国家重点实验室；

【摘要】 近年来随着海洋环境保护力度加大,透空防波堤具有结构简单、透水性好、环境友好等特点,逐渐得到了人们的重视。结合当下时代趋势,对一种双挡板透空式防波堤的水动力特性开展物理模型试验研究,以对挡板透空防波堤设计提供依据和帮助。考虑相对水深、挡板相对入水深度、相对堤宽、挡板间水面情况等因素,分析了双挡板透空式防波堤的透射系数、反射系数以及能量损失等水动力特性。结果表明,该防波堤的透射系数随相对水深、挡板相对入水深、堤宽的增大而减小;反射系数则反之。相对水深与挡板的相对入水深度对透射系数与反射系数影响最大,相对堤宽对其影响有限。板间水面情况对防波堤水动力特性有一定影响,自由水面工况下的反射系数比淹没工况下的大,对透射系数影响与相对水深有关。两板间为自由水面时,板间水体可与入射波产生共振,进而影响防波堤水动力特性。更多还原

【Abstract】 In recent years, with the increase of marine environmental protection, permeable breakwater has been paid more and more attention, which has the characteristics of simple structure, good water permeability and environment-friendly. Combining with the current trend of the times, a physical model test is carried out on the hydrodynamic characteristics of a double baffle permeable breakwater to provide basis and help for the design of the baffle permeable breakwater. Considering the relative water depth, baffle underwater depth, breakwater width and water surface condition between baffles, the transmission coefficient, reflection coefficient and energy consumption of double baffle breakwater are analyzed. The results show that the transmission coefficient of the breakwater decreases with the increase of the relative water depth, relative baffle underwater depth, and relative breakwater width, and the reflection coefficient is contrary. The relative water depth and the relative baffle underwater depth have the greatest influence on the transmission coefficient and reflection coefficient, while the relative breakwater width has little influence on it. The water surface condition between plates has certain influence on the hydrodynamic characteristics of the breakwater. The reflection coefficient under free water surface condition is larger than that under submerged condition, and the transmission coefficient is related to the relative water depth. When the water surface between the plates is free, the water body between the plates can resonate with the incident wave, which affects the hydrodynamic characteristics of the breakwater.更多还原