平弧板与双平板式透空堤消浪性能比较

Comparative study on wave attenuation performance of flat-arc-plate and twin-flat-plate breakwater

为比较分析平弧板与双平板式透空堤结构在不同入射波浪条件下的消浪性能,基于物理模型试验开展波浪与其相互作用的试验研究。结果表明:平弧板和双平板式透空堤的透射系数均随相对板宽的增大而波动减小,能耗系数则相反。在不同潜深条件下,平弧板式透空堤的透射系数和反射系数均小于双平板式透空堤,透射系数最高可减少22%,当相对板宽W L=0.103时反射系数减小幅度最大为82%。平弧板式透空堤能耗系数均大于双平板式透空堤,相对板宽W L在0.103~0.212范围内,能耗系数平均增幅约为22%。研究结果可为2种透空堤结构的工程应用提供必要的理论指导,建议在实际工程中选择平弧板式透空堤。

To compare and analyze the wave-eliminating performance of the flat-arc-plate and the twin-flat-plate permeable breakwater structure under different incident wave conditions,we carry out an experimental study of the wave and its interaction based on the physical model test.The results show that the transmission coefficients of the flat-arc-plate and the twin-flat-plate transparent breakwater both fluctuate and decrease with the increase of the relative plate width,while the energy consumption coefficient is opposite.Under different diving depth conditions,the transmission coefficient and reflection coefficient of the flat-arc-plate transparent breakwater are both smaller than that of the twin-flat-plate transparent breakwater,and the transmission coefficient can be reduced by up to 22%.When the relative board width W L=0.103,the maximum reduction in reflection coefficient is 82%.The energy consumption coefficient of flat-arc-plate permeable breakwater is greater than that of twin-flat-plate permeable breakwater.The relative W L between the plates is in the range of 0.103 to 0.212,and the average increase in dissipation coefficient is about 22%.The research results r can provide necessary theoretical guidance for the application of the two permeable breakwater structures in engineering.It is recommended to choose the flat arc slab permeable dike in the actual project.