【摘要】：海底管道將海上油氣田的整個(gè)生產(chǎn)系統(tǒng)有機(jī)地聯(lián)系起來(lái),是目前最快捷、最安全和最經(jīng)濟(jì)可靠的海上運(yùn)輸方式,被譽(yù)為海上油氣開發(fā)的生命線。然而,由于海底管道所處的海洋環(huán)境非常復(fù)雜,海底管道出現(xiàn)懸空現(xiàn)象是不可避免的,而懸空的致災(zāi)后果非常嚴(yán)重。因此,對(duì)海底管道懸空隱患的治理迫在眉睫。目前有關(guān)海底管道懸空治理的方法要么治理效果不佳,要么費(fèi)用高昂,而二次挖溝治理能夠彌補(bǔ)現(xiàn)有治理方法的不足,況且有關(guān)這方面的研究又極少。鑒于此,有必要對(duì)二次挖溝治理海底懸空管道進(jìn)行研究。本文以運(yùn)行狀態(tài)下的海底水平懸空管道為研究對(duì)象,首先調(diào)研了國(guó)內(nèi)外有關(guān)懸空管道力學(xué)分析與治理的文獻(xiàn),并對(duì)兩端固支的海底自由懸空管道進(jìn)行了靜力計(jì)算和允許懸空長(zhǎng)度的計(jì)算。然后,結(jié)合管土相互作用理論,運(yùn)用AutoPIPE軟件模擬海底懸空管道在挖溝治理過(guò)程中的位移變形和應(yīng)力變化,通過(guò)強(qiáng)度分析來(lái)判斷懸空管道的挖溝治理是否可行,得出如下結(jié)論:懸空段兩邊的海床支撐性質(zhì)(剛性和彈性)不同,管道的位移變形和應(yīng)力分布有所差異;海底懸空管道的挖溝治理過(guò)程中,內(nèi)壓的影響可忽略不計(jì),而挖溝深度或管道溫差的增加將明顯增大管道應(yīng)力;雖然一次挖溝成型和多次挖溝成型之后的管道應(yīng)力相同,但多次挖溝成型能明顯降低一次挖溝成型中的應(yīng)力峰值,從而避免了懸空管道在挖溝過(guò)程中可能發(fā)生的屈服破壞。結(jié)合上述特征,擬合了相關(guān)公式,并制定了海底懸空管道挖溝治理的流程,該流程適用于風(fēng)平浪靜或波流影響很小下的挖溝施工,為海底懸空管道的治理提供了參考依據(jù)。
[Abstract]:Submarine pipeline, which links the whole production system of offshore oil and gas field organically, is the quickest, safest and most economical and reliable mode of maritime transportation at present, and is regarded as the lifeline of offshore oil and gas development. However, due to the complexity of the marine environment in which the submarine pipeline is located, it is inevitable that the submarine pipeline is suspended, and the consequences of the disaster caused by the suspension are very serious. Therefore, it is urgent to control the hidden danger of submarine pipeline suspension. At present, the methods of subsea pipeline suspension management are either poor or expensive, and the secondary trench treatment can make up for the shortcomings of the existing treatment methods, and the research on this aspect is very little. In view of this, it is necessary to study the treatment of submarine suspended pipeline by secondary excavation. In this paper, the horizontal suspended pipeline under the operating state is taken as the research object. Firstly, the literatures about the mechanical analysis and management of the suspended pipeline at home and abroad are investigated. The static and allowable suspended length of the free suspended submarine pipeline with fixed ends are calculated. Then, combined with the interaction theory of pipe and soil, the displacement deformation and stress change of submarine suspended pipeline in the course of trench treatment are simulated by AutoPIPE software, and the feasibility of trenching treatment of suspended pipeline is judged by strength analysis. The conclusions are as follows: the displacement deformation and stress distribution of the pipeline are different between the two sides of the suspended section due to the different properties of the seabed support (rigidity and elasticity); In the process of trench treatment of submarine suspended pipeline, the influence of internal pressure can be ignored, but the increase of trench depth or pipe temperature difference will obviously increase the pipeline stress; Although the pipe stress is the same after one-time trench forming and multiple trench-digging forming, the stress peak value in once-digging trench forming can be obviously reduced by multiple trenching forming, thus avoiding the possible yield failure of suspended pipe in trenching process. In combination with the above characteristics, the relevant formulas are fitted, and the process of trenching treatment for submarine suspended pipelines is formulated. This process is suitable for trenching construction under the condition of quiet wind and waves or little influence of wave currents, which provides a reference basis for the treatment of submarine suspended pipelines.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE973.8

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉秉德;倪玲英;詹燕民;劉錦昆;;海底管道挖溝的數(shù)值模擬[J];管道技術(shù)與設(shè)備;2014年06期

2 葉茂;段夢(mèng)蘭;徐崇崴;匡濤;焦曉楠;楊偉;;J形鋪設(shè)過(guò)程管道動(dòng)態(tài)分析與研究[J];石油機(jī)械;2013年06期

3 王召堂;;南堡油田海底管道勘測(cè)及問題管段治理[J];石油工程建設(shè);2012年06期

4 奉虎;王彥紅;王靖;;海底管道懸跨處理方法及其適用性分析[J];中國(guó)造船;2012年S2期

5 于國(guó)友;林鎮(zhèn)詩(shī);楊源;;基于ANSYS的深水海底管道鋪設(shè)受力分析[J];中國(guó)造船;2012年01期

6 楊立雷;王榮敏;張振宇;姬蕊;翟博文;;埋地輸油管道應(yīng)力分析及錨固墩設(shè)計(jì)[J];石油和化工設(shè)備;2011年12期

7 陳凱;段夢(mèng)蘭;張文;;深水S型鋪管管道形態(tài)及力學(xué)分析方法研究[J];力學(xué)季刊;2011年03期

8 楊毅;閆寶東;廖柯熹;;輸油管道懸空管段應(yīng)力計(jì)算[J];石油學(xué)報(bào);2011年05期

9 陳博文;孫麗;谷凡;;海底管道最大允許懸跨長(zhǎng)度計(jì)算[J];防災(zāi)減災(zāi)工程學(xué)報(bào);2010年S1期

10 胡家順;馮新;周晶;;考慮邊界土體性質(zhì)懸跨管道振動(dòng)特性分析[J];大連理工大學(xué)學(xué)報(bào);2010年03期

相關(guān)會(huì)議論文 前3條

1 徐普;龔順風(fēng);鐘文軍;何寧;燕暉;;深水S型鋪管動(dòng)力響應(yīng)分析[A];第十六屆中國(guó)海洋（岸）工程學(xué)術(shù)討論會(huì)論文集（上冊(cè)）[C];2013年

2 邢靜忠;柳春圖;段夢(mèng)蘭;;彈性海床上裸露懸跨管道變形和內(nèi)力分析[A];第十二屆中國(guó)海岸工程學(xué)術(shù)討論會(huì)論文集[C];2005年

3 李林普;陳海歐;劉錦昆;張衍濤;;海底埋設(shè)管道受沖刷后局部允許懸空長(zhǎng)度分析[A];第十六屆全國(guó)水動(dòng)力學(xué)研討會(huì)文集[C];2002年

相關(guān)碩士學(xué)位論文 前1條

1 王曉磊;黃河三角洲埕北典型海域工程地質(zhì)環(huán)境及粒度指示性分析[D];中國(guó)海洋大學(xué);2014年

，

本文編號(hào)：2441207