波浪在潜堤上传播和破碎（李鹏）
【作者】李鹏 【导师】左其华
【作者基本信息】南京水利科学研究院，港口、海岸及近海工程，2005年，硕士
【中文摘要】 潜堤是一种常见的护岸工程结构物,广泛的应用于护岸、保滩促淤、围海造田以及防浪导流等海岸工程中。目前国内外对潜堤的研究虽然很多,研究的成果也较丰富,但由于潜堤的型式很多,在实际工程设计中很多时候还需要借助于物理模型试验,尤其是波浪在潜堤上的传播和破碎研究更不充分,对此仍有进一步的研究的必要。 本文以梯形断面的潜堤为研究对象,通过物理模型试验的方法,分别研究了在规则波作用下潜堤的消浪特性、破碎型态以及波浪的沿程变化。在潜堤消浪特性的研究中,通过变化各影响因子,在分析各种影响因素对潜堤消浪影响的基础上,选取几个最主要的影响因素,即波陡(H/L)、相对水深(d/H)、相对宽度(B/H)、相对浸水深度(a/H)作为研究重点,根据物理模型试验结果,分析了潜堤的消浪特性随各影响因素的变化规律。文章还讨论了潜堤上波浪的破碎型态、破碎位置等。
【英文摘要】 Submerged dike is a common offshore structure, which is widely used for bank protecting, wave defending and silt promoting engineering and etc. Although, a lot of research studies are done upon such a problem home and abroad and lots of the accomplished results are gotten. However, because there are many types of the submerged dike, it is hard to get a unifying result, in the real projects and in most cases; they will have to depend on the results of physical model experiment. Especially the research of the wave transmission and wave breaking over the submerged dike is not enough, a perfect result is expected to get for the practice in this paper.The paper studies upon the trapezoidal-type submerged dike. Through the physical model experiment, the characteristics of the wave breaker over submerged dike, breaker type and the change of wave height over the dike are analyzed under the action of regular wave. In the tests of wave transmission, several main factors are considered to know ho...更多w the dike defends the waves, these factors are wave steepness (H/L), relative water depth (d/H), B/H (B is the dike crest width, H is the wave height), and a/H (a is the height from the still water level to the top of the dike). Base on the physical model experiment, it can be known how the dike defend waves under the change of those factors, and what the breaker type is, breaking position over the dike and the wave height behind the dike. 还原
【中文关键词】 潜堤; 物理模型试验; 波浪传播; 波浪破碎
【英文关键词】 submerged dike; physical model experiment; wave transmission; wave breaking
