【摘要】：隨著海洋工程逐步向深水發(fā)展,傳統(tǒng)結構形式消浪結構的應用受到一定的限制,新型消浪結構優(yōu)勢逐漸顯現(xiàn)。近幾年,新型消浪結構的應用越來越引起人們的重視,因為它不破壞水域的整體性和生態(tài)環(huán)境,不改變水流和泥沙運動條件的特點,特別適合需要消浪的深水水域。隨著我國經濟快速發(fā)展,汽車數(shù)量不斷增多,廢舊輪胎的回收利用問題越來越嚴重,考慮到輪胎比較經久耐用、綠色環(huán)保,因此對一種由廢舊輪胎組成的半潛式的新型消浪結構的研究不失為一種前沿性的研究。在海洋消浪結構中對廢舊輪胎為主要材料的半潛式結構的應用研究比較少見,因此為了了解半潛式廢舊輪胎結構的消浪特性,掌握影響其消浪效果的因素,針對相對寬度、相對入水深度、相對水平凈間距、垂直凈間距、排列方式等因素對消浪效果的影響進行了物理模型試驗,了解在規(guī)則波作用時該半潛式結構的消浪性能,試驗結果表明:透射系數(shù)在相對寬度大于0.6時隨寬度的增大而減小,隨入水深度的增大而減小,水平間距的影響規(guī)律不是很明顯,在模型潛入水中時,單層水平情況下波陡H/L和相對波高H/d對透射系數(shù)的影響不是很大,而雙層水平情況下,改變波陡H/L和相對波高H/d對透射系數(shù)的影響還是很明顯的,對于單層水平情況下寬度B=2.52m時在入水深度q=0.03m時消浪效果做好,垂直排列比水平排列消浪效果最佳等。對于波浪,由于模型潛入水體表面以下的原因,能夠使水表面及以下部分波浪破碎,破壞了波浪原有的運動方式,也可反射部分波浪達到衰減波浪的目的。與現(xiàn)有的各種浮式和半潛式消浪結構物相比,經濟、可靠、取材容易。關鍵是消浪結構是潛入海平面以下可以在不影響旅游景點海灘整體觀光效果的同時可以達到很好的消浪作用,為其能夠被廣泛應用提供重要依據。對海岸帶防護、減小海浪對海灘的侵蝕具有重要的作用。
[Abstract]:With the development of ocean engineering towards deep water, the application of the traditional structure is limited, and the advantages of the new type of wave-absorbing structure gradually appear. In recent years, more and more attention has been paid to the application of the new wave dissipating structure, because it does not destroy the integrity and ecological environment of the water area, and does not change the characteristics of the water flow and sediment movement conditions, so it is especially suitable for the deep-water waters where wave elimination is needed. With the rapid development of China's economy, the number of cars is increasing, and the problem of recycling used tyres is becoming more and more serious. Considering that tyres are more durable and green, Therefore, the study of a new type of semi-submersible wave dissipating structure made up of used tires is a kind of advanced research. The application of semi-submersible structure with waste tire as the main material is rare in ocean wave dissipating structure. Therefore, in order to understand the characteristics of wave elimination of waste tire structure and grasp the factors that affect the effect of wave elimination, the relative width of the semi-submersible tire structure is studied. The effects of the relative depth of water, the relative horizontal net spacing, the vertical net spacing and the arrangement mode on the wave attenuation effect are tested by physical model tests, and the wave attenuation performance of the semi-submersible structure under regular wave action is understood. The experimental results show that the transmission coefficient decreases with the increase of the width when the relative width is greater than 0.6, and decreases with the increase of the depth of entering water. The effect of horizontal spacing is not obvious. The influence of wave steep H / L and relative wave height H / d on the transmission coefficient is not great in the case of single layer level, but the effect of changing the wave steep H / L and relative wave height H / d on the transmission coefficient is still very obvious in the case of double level. When the width of BX 2.52m is single layer horizontal, the effect of wave elimination is better when the depth of water is 0.03m, the vertical arrangement is better than the horizontal arrangement, and the effect of wave elimination is the best. For wave, because the model submerges below the surface of the water body, it can break the water surface and some waves below, destroy the original motion mode of the wave, and can also reflect the part of the wave to achieve the purpose of wave attenuation. Compared with the existing floating and semi-submersible wave-absorbing structures, they are economical, reliable and easy to use. The key point is that the wave elimination structure can not affect the overall sightseeing effect of tourist attractions and beaches without affecting the overall effect of wave absorption, which provides an important basis for its wide application. It plays an important role in protecting the coastal zone and reducing the beach erosion caused by the waves.
【學位授予單位】：大連海洋大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P75;TV139.2

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