摘要：第二十一世纪是人类走向海洋的时代，在海洋资源大开发的背景下，传统的固定式防波堤明显已经不能再适用，开发能够有效掩护海工建筑物的柔性浮式防波堤成为当务之急。柔性浮式防波堤的优点有：价格低廉、结构简单、使用材料环保、对生态环境危害小、制造施工简单方便等。因为柔性浮式防波堤的这些优点，所以对其研究显得十分重要，也是未来的发展趋势，但在研究中发现浮式防波堤在长波条件下的消浪性能略差，限制了在实际工程中的应用。

本文通过多种柔性浮式防波堤消浪机理的研究，提出两种型式柔性浮式防波堤的结构，一种为圆木型柔性浮式防波堤，另一种为垂帘式柔性浮式防波堤。在二维水槽波浪条件下研究了相对宽度、波陡和有无浮板对两种型式柔性浮堤消浪性能的影响，并且对比分析了圆木型和垂帘式两种型式柔性浮堤消浪性能的优劣。

二维水槽试验中，分析相对宽度、波陡和有无浮板对柔性浮堤消浪性能的影响，发现相对宽度对柔性浮式防波堤的影响为主要影响因素，随着相对宽度的增加透射系数会减小并逐渐趋于稳定。

对比两种型式柔性浮式防波堤的消浪性能发现，相对宽度对两种型式的影响相差不大，而在不定波长条件下，波陡对两种型式柔性浮堤的透射系数影响相差较大，垂帘式柔性浮堤的透射系数明显较稳定，透射系数平均值较小，一定条件下消浪效果优于圆木型柔性浮堤。

关键词:柔性浮式防波堤；透射系数；物理模型试验；消浪性能；消浪机理

Abstract：The 21st century is the age of the human race to the sea .In the context of the great development of Marine resources, the traditional fixed breakwater is obviously not applicable.It’s necessary to developing flexible floating breakwater, which can effectively cover ocean engineering buildings.The advantages of flexible floating breakwater are: low cost, simple construction, low impact on ecological environment and simple manufacturing.Because of these advantages of flexible floating breakwater, it is very important to study it and it is also the trend of the future.However, in the study, the performance of the floating breakwater in the long wave condition is slightly worse, and the application in the actual project is restricted.

In this paper, the structure of two types of flexible floating breakwater is put forward through the study of the mechanism of the wave dissipation of various flexible floating breakwater , a kind of flexible floating breakwater for log type, another kind of flexible floating breakwater for the vertical curtain. The influence of the relative width, wave steepness and the floating slab on the performance of the two types of flexible floating dam was studied under the two dimensional wave condition,and the advantages and disadvantages of the two types of flexible floating dikes are analyzed.

Two-dimensional water tank experiment, the analysis of relative width, slope, and presence of floating slabs flexible floating breakwater wave performance impact, found that the relative width of the influence of flexible floating breakwater as the main influencing factors. As the relative width increases the transmission coefficient decreases and tends to stabilize.

Compared with the wave performance of two types of flexible floating breakwater, the effect of the relative width on the two models is not significant. In the indefinite wavelength condition, the transmission coefficient of the two types of flexible floating levees is very different. The transmission coefficient of the flexible floating breakwater for the vertical curtain is obviously more stable, the transmission coefficient is small, and the effect of the wave is better than the log type flexible floating breakwater .

Keywords: flexible floating breakwater; the transmission coefficient; physical model test; wave performance