本文選題：透空式消浪結(jié)構(gòu) + 淹沒水平板��； 參考：《大連理工大學(xué)》2015年碩士論文

【摘要】：傳統(tǒng)的消浪結(jié)構(gòu)在海洋工程發(fā)展的歷程中一直發(fā)揮著重要的作用,起到了良好的防御消浪效果,但其存在造價高、技術(shù)復(fù)雜以及施工時間長等不足,新型透空式消浪結(jié)構(gòu)能夠較好地彌補上述不足,越來越得到人們的重視和關(guān)注。淹沒水平板作為一種透空式消浪結(jié)構(gòu),具有節(jié)約材料、安放方便以及對海洋生態(tài)環(huán)境破壞低的特性。水平板在大多數(shù)情況下能夠有效抵御波浪對海洋結(jié)構(gòu)的入侵,較好地滿足現(xiàn)代海洋工程的需求。本文通過物理模型試驗研究了淹沒水平板對于規(guī)則波和不規(guī)則波的消浪效果,分別在三個不同水深情況下進行了試驗,且各水深情況下的水平板淹沒深度不盡相同。對于規(guī)則波試驗而言,分析了水平板淹沒深度、相對板寬對于反射系數(shù)和透射系數(shù)的影響。結(jié)果表明反射系數(shù)變化微小,淹沒水平板對于波浪的反射能力有限,難以得到提升；相對板寬越大,透射系數(shù)越小,即波長越小,透射系數(shù)越小,說明淹沒水平板對于短波的消浪效果良好。本文重點研究了淹沒水平板對不規(guī)則波的消波作用,通過物理模型試驗所得的試驗數(shù)據(jù),分析了水平板前后的入射譜、反射譜以及透射譜的基本特性,并通過譜面積的大小來衡量水平板對于波浪的能量反射率和透射率,從而得知其消波效果的優(yōu)異。同時對透射譜進行了擬合,提出了用試驗初始入射條件和相應(yīng)試驗工況變量描述的擬合表達式,最后得到的透射譜擬合譜和試驗中實測的透射譜吻合良好,各自對應(yīng)的譜相關(guān)參數(shù)十分接近。
[Abstract]:The traditional wave dissipating structure has been playing an important role in the development of ocean engineering, and has played a good defense against wave elimination effect, but it has many shortcomings, such as high cost, complex technology and long construction time, etc.More and more attention has been paid to the new porous wave-dissipating structure which can make up for the above deficiencies.The submerged horizontal plate, as a kind of permeable wave dissipating structure, has the characteristics of saving material, convenient placement and low damage to marine ecological environment.In most cases, the water plate can resist the invading of ocean structure by wave, and meet the demand of modern ocean engineering.In this paper, the effect of submerged horizontal plate on wave dissipation of regular and irregular waves is studied by physical model tests. Experiments are carried out under three different water depths, and the submerged depth of horizontal plate is different under different water depths.For the regular wave test, the influence of the submerged depth and the relative width of the plate on the reflection coefficient and the transmission coefficient is analyzed.The results show that the reflection coefficient is small and the reflection ability of submerged horizontal plate to wave is limited, so it is difficult to improve, the larger the relative plate width, the smaller the transmission coefficient, that is, the smaller the wavelength, the smaller the transmission coefficient.It shows that the submerged horizontal plate has good effect on wave elimination of short wave.In this paper, the effect of submerged horizontal plate on the wave suppression of irregular waves is mainly studied. The basic characteristics of incident spectrum, reflection spectrum and transmission spectrum before and after the submerged horizontal plate are analyzed by the experimental data obtained from the physical model test.The energy reflectivity and transmittance of the horizontal plate to the wave are measured by the size of the spectral area, and the excellent wave elimination effect is obtained.At the same time, the transmission spectrum is fitted, and the fitting expression described by the initial incident condition of the test and the corresponding test condition variable is put forward. Finally, the fitting spectrum of the transmission spectrum obtained is in good agreement with the transmission spectrum measured in the experiment.The corresponding spectral correlation parameters are very close.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P75

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本文編號：1761746