本文選題：水下懸浮隧道 + 瓊州海峽��； 參考：《天津大學(xué)》2015年碩士論文

【摘要】：隨著經(jīng)濟(jì)的快速增長和社會的不斷進(jìn)步,溝渠的跨越問題越來越成為亟待解決的難題。目前已經(jīng)開發(fā)出了各種水上橋梁、沉底管道等各種跨越方式,然而對于瓊州海峽這樣寬度和深度都很大的海峽的跨越問題尚未有更好的解決辦法。水下懸浮隧道是一類先進(jìn)穿越海峽湖泊的交通通道,它很經(jīng)濟(jì)、幾乎無污染,且基本不受外界因素的影響,便于設(shè)置多類跨海、跨江等的供電、供水的管線,業(yè)已受到許多國家不斷的關(guān)注。而錨索式水下懸浮隧道憑借其突出的優(yōu)越性,更是成為國內(nèi)外專家學(xué)者研究的重點(diǎn)。目前國內(nèi)外對錨索式水下懸浮隧道的研究已經(jīng)有了很多成果,但對纜索布置方式進(jìn)行選優(yōu)卻少有文獻(xiàn)提及。因此,本文對錨索式水下懸浮隧道纜索的優(yōu)化進(jìn)行了初步的研究。在查閱了國內(nèi)外眾多文獻(xiàn)的基礎(chǔ)上,本文首先簡單的介紹了水下懸浮隧道的概念及研究概況,同時對新近提出的水下懸浮隧道的不同布置類型的特點(diǎn)及選型方法進(jìn)行了分析,并以瓊州海峽為例,結(jié)合瓊州海峽特定的海況和不同水下懸浮隧道類型的特點(diǎn),給出了適合瓊州海峽海況的水下懸浮隧道的型式,也即錨索式水下懸浮隧道傾斜布索的型式,接著通過Gambit建立流場模型并將劃分好的網(wǎng)格導(dǎo)入Fluent軟件中進(jìn)行模擬計算,得到了適宜的拖曳力系數(shù),接下來以纜索對數(shù)、纜索傾角和纜索間夾角為變量,建立并計算分析了多個模型,給出了纜索的最優(yōu)布置方案,最后以海流流速為變量,建立了大量模型,對錨索式水下懸浮隧道的纜索進(jìn)行了初步的模態(tài)分析,結(jié)果發(fā)現(xiàn),海流流速為1.4m/s~2.4m/s時,水下懸浮隧道纜索出現(xiàn)一階模態(tài)振動的現(xiàn)象,海流流速為2.7m/s~4.0m/s時,水下懸浮隧道纜索便開始出現(xiàn)二階模態(tài)振動的現(xiàn)象。
[Abstract]:With the rapid economic growth and social progress, the problem of ditch crossing has become an urgent problem. At present, all kinds of bridge and bottom pipeline have been developed, but there is no better solution to the crossing problem of straits with such wide width and depth as Qiongzhou Strait. The underwater suspended tunnel is a kind of advanced traffic passage through straits and lakes. It is economical, almost pollution-free, and basically independent of external factors. It is convenient to set up many kinds of pipelines for power supply and water supply across the sea and across the river. It has received constant attention from many countries. The anchor-cable-type underwater suspension tunnel, with its outstanding advantages, has become the focus of experts and scholars at home and abroad. At present, there have been a lot of achievements in the research of underwater suspended tunnel with anchor cable, but few references have been made on the selection of cable arrangement. Therefore, the optimization of cable in underwater suspension tunnel is studied in this paper. On the basis of consulting many literatures at home and abroad, this paper firstly introduces the concept and research situation of underwater suspended tunnel, and analyzes the characteristics and selection methods of different layout types of underwater suspended tunnel. Taking Qiongzhou Strait as an example, combined with the specific sea conditions of Qiongzhou Strait and the characteristics of different types of underwater suspended tunnel, the type of underwater suspension tunnel suitable for the sea condition of Qiongzhou Strait is given, that is, the type of inclined cable arrangement of anchor cable type underwater suspension tunnel. Then the flow field model is established by Gambit and the mesh is imported into fluent software to simulate and calculate, and the appropriate drag force coefficient is obtained. Then, the logarithm of the cable, the angle between the cables and the angle between the cables are taken as variables. Several models are established and analyzed, and the optimal arrangement scheme of cables is given. Finally, a large number of models are established with the current velocity as a variable, and a preliminary modal analysis of the cables in the cable suspension tunnel is carried out, and the results show that, When the current velocity is 1.4m/s~2.4m/s, the phenomenon of first-order mode vibration appears in the cable of underwater suspended tunnel. When the current velocity is 2.7m/s~4.0m/s, the second-order mode vibration of the cable begins to appear.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U459.5

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本文編號：2032233