本文關(guān)鍵詞： 非粘結(jié)型柔性管道 徑向壓縮剛度 壓潰 有限元 實(shí)驗(yàn)驗(yàn)證　出處：《大連理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著能源需求的日益增長及陸地資源開采接近尾聲,對(duì)海洋油氣資源的開采成為目前國際能源的熱點(diǎn)。非粘結(jié)型柔性管道作為能源開采中的重要輸運(yùn)裝備,對(duì)其設(shè)計(jì)及制造技術(shù)的研究尤為重要。非粘結(jié)型柔性管道由金屬鎧裝層及聚合物材料功能層非粘結(jié)而成,層間可相互滑動(dòng)。管道鋪設(shè)、儲(chǔ)運(yùn)過程中會(huì)出現(xiàn)徑向壓縮失效進(jìn)而導(dǎo)致壓潰失效,而深海應(yīng)用會(huì)出現(xiàn)壓潰失效,因此要對(duì)非粘結(jié)型柔性管道進(jìn)行抗壓潰分析。本文首先調(diào)研并總結(jié)非粘結(jié)型柔性管道結(jié)構(gòu)形式及其功能和國內(nèi)外學(xué)者關(guān)于管道抗壓潰分析的研究現(xiàn)狀�；谟邢拊獢�(shù)值方法,建立骨架層三維有限元模型,研究徑向壓縮載荷作用下骨架層的力學(xué)行為。同時(shí)將骨架層簡(jiǎn)化為圓環(huán),推導(dǎo)了圓環(huán)對(duì)徑壓縮剛度的解析公式。搭建了柔性軟管徑向壓縮性能的實(shí)驗(yàn)測(cè)試裝置,通過骨架層試件的徑向壓縮測(cè)試,驗(yàn)證了有限元模型的正確性。數(shù)值研究還發(fā)現(xiàn),隨著鋼帶厚度與內(nèi)徑比的增加,骨架層徑向壓縮剛度會(huì)顯著增大。該有限元數(shù)值模型及其分析技術(shù)為柔性管道受徑向壓縮分析和設(shè)計(jì)提供了有效的技術(shù)手段。對(duì)多層結(jié)構(gòu)抗壓潰設(shè)計(jì)進(jìn)行研究,通過簡(jiǎn)化的數(shù)值模型研究濕壓潰及干壓潰兩種情形,得出抗壓鎧裝層對(duì)骨架層抗壓潰性能影響很大,同時(shí)抗壓鎧裝層與內(nèi)護(hù)套層之間間隙的大小對(duì)管道抗壓潰性能也有影響,而無限提高抗壓鎧裝層厚度不能提高結(jié)構(gòu)抗壓潰性能,反而增加了載荷負(fù)擔(dān)及成本。針對(duì)淺水水域提供簡(jiǎn)化的非粘結(jié)型管道設(shè)計(jì),即淺水經(jīng)濟(jì)型管道,此種管道形式不僅能滿足功能需求同時(shí)節(jié)約了成本。對(duì)一種淺水經(jīng)濟(jì)型管道進(jìn)行數(shù)值與實(shí)驗(yàn)分析其抗壓潰性能,得出能滿足水深要求,同時(shí)驗(yàn)證了前述多層結(jié)構(gòu)設(shè)計(jì)及截面等效方法的合理性。
[Abstract]:With the increasing energy demand and the end of land resource exploitation, the exploitation of offshore oil and gas resources has become a hot spot in the world. It is particularly important to study the design and manufacture technology. The non-adhesive flexible pipeline is composed of metal sheathed layer and functional layer of polymer material, which can slide each other. During storage and transportation, radial compression failure will occur, which will lead to crushing failure, while deep-sea application will cause crushing failure. Therefore, it is necessary to analyze the failure resistance of the non-bonded flexible pipeline. Firstly, this paper investigates and summarizes the structure form and function of the non-bonded flexible pipeline and the present situation of the domestic and foreign scholars' research on the anti-collapse analysis of the pipeline, based on the finite element numerical method. A three-dimensional finite element model of the skeleton layer is established to study the mechanical behavior of the skeleton layer under radial compression load. At the same time, the skeleton layer is simplified as a circular ring. The analytical formula of radial compression stiffness of circular ring is derived. An experimental test device for the radial compression performance of flexible hose is built. The validity of the finite element model is verified by the radial compression test of the skeleton specimen. The numerical results also show that the finite element model is correct. With the increase of the ratio of strip thickness to inner diameter, The radial compression stiffness of the skeleton layer will increase significantly. The finite element numerical model and its analysis technology provide an effective technical means for the radial compression analysis and design of flexible pipeline. The simplified numerical model is used to study the wet crushing and the dry crushing. It is concluded that the compressive armor has a great influence on the crushing performance of the skeleton layer, and the gap between the compressive armor and the inner sheath has an effect on the crushing resistance of the pipeline. However, unlimited increase in the thickness of the sheathed layer does not improve the crushing resistance of the structure, but rather increases the load burden and cost. In the case of shallow water, a simplified design of non-cohesive pipeline, that is, shallow water economical pipeline, is provided. This kind of pipeline can not only meet the function requirement but also save the cost. Through numerical and experimental analysis of the crashing resistance of a shallow water economic pipeline, it is concluded that it can meet the requirement of water depth. At the same time, the rationality of the design and section equivalent method is verified.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P756.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 周承倜,馬良;φ529mm管道在彎曲與外壓共同作用下全尺寸的實(shí)測(cè)實(shí)驗(yàn)[J];油氣儲(chǔ)運(yùn);1990年05期

，

本文編號(hào)：1521524