ABSTRACT

This study experimentally investigated the performance and hydrodynamic response of a flexible floating pontoon-type breakwater. The floating breakwater consists of ten rubber pontoons with flexible connections. The effect of relative breadth and relative wave height on the wave transmission, reflection and dissipation coefficients has been discussed for various assembly configurations of the floating breakwater. The results show that the flexible multi-pontoon breakwater has better performance with larger relative breadth. The configuration of continuous pontoons without gap has the best performance on wave attenuation for relatively long waves. In short waves, however, better performance was observed on the pontoon configurations of two equal sets with gap. The novelty of this study is figuring out the relationship among the wave reflection coefficient, motion and mooring tension of the breakwater. The results reveal that the variation of reflection coefficient versus relative breadth shows the same trend as that of mooring tension.

摘要

本研究通过实验研究了柔性浮筒式防波堤的性能和水动力响应。浮动防波堤由十个带有柔性连接的橡胶浮桥组成。讨论了浮动式防波堤的各种组件配置的相对宽度和相对波高对波传输、反射和耗散系数的影响。结果表明，柔性多浮桥防波堤性能较好，相对宽度较大。连续无间隙的浮筒配置对于相对较长的波浪具有最佳的波浪衰减性能。然而，在短波中，在具有间隙的两组相等的浮筒配置上观察到了更好的性能。这项研究的新颖之处在于弄清了波浪反射系数、运动和防波堤系泊张力之间的关系。结果表明，反射系数随相对宽度的变化与系泊张力的变化趋势相同。