卷管式鋪管法施工卷盤過程研究
發(fā)布時間：2018-10-24 21:39
【摘要】：在海洋油氣資源的開發(fā)過程中，海底管道是不可或缺的組成部分。海底管道主要用于對海底石油和天然氣的生產(chǎn)和運輸。由于海底管道鋪設工藝復雜，海洋環(huán)境復雜多變，海底管道鋪設的難度比陸地鋪設要大的多，因此對海底管道鋪設的施工工藝的研究十分重要。目前海底管道的鋪設的方法主要有：S型鋪管法、J型鋪管法、卷管式鋪管法和拖拽式鋪管法。本文對這幾種鋪管方法分布進行了介紹，并主要介紹卷管式鋪管法的相關內(nèi)容。卷管式鋪管法是20世紀末開始發(fā)展起來的一種海洋鋪管方法。這種方法的鋪管效率高，費用相對較低，已經(jīng)在許多國家得到應用。本文主要介紹卷管式鋪管法的施工過程，并針對鋪管過程中管道上卷這一過程進行分析研究。在一定的假設和簡化的基礎上，對管道在上卷過程中的受力進行了理論分析計算。并結合有限元方法，運用Abaqus有限元分析軟件，建立管道上卷的模型，并對管道上卷的受力模型進行分析和計算，為工程施工提供理論依據(jù)和參考。 本文的主要研究內(nèi)容有以下幾方面： （1）文章對幾種海底管道的鋪設方法及各自的特點進行了介紹。并重點對卷管式鋪管法的施工流程進行介紹，提出了為確保施工順利進行的注意事項，為施工過程的項目管理提供參考。 （2）針對管道上卷的過程，，對管道的受力進行了詳細的分析研究。用理論計算的方法，對管道在彈性階段內(nèi)的彎曲進行受力分析。分析管道在彈性階段內(nèi)能夠達到的最大彎矩程度，為塑性分析提供理論基礎。 （3）對管道在純彎曲的狀態(tài)下進行分析研究。按照是否考慮材料的強化，通過理論計算和有限元分析，計算管道的受力狀態(tài)。找出了彎矩和曲率之間的關系。 （4）根據(jù)實際工程情況，管道上卷過程受到軸向力和彎矩的共同作用。通過運用理論計算和有限元分析相結合的方法，對管道在受到拉彎共同作用下的應力和變形狀態(tài)進行分析。為工程施工過程中施加軸力和彎矩，選取合適的圓盤提供參考。
[Abstract]:In the process of exploitation of offshore oil and gas resources, submarine pipeline is an indispensable part. Submarine pipelines are mainly used for the production and transportation of submarine oil and gas. Because the submarine pipeline laying technology is complex and the marine environment is complex and changeable, the submarine pipeline laying is much more difficult than the land laying, so it is very important to study the construction technology of submarine pipeline laying. At present, the main methods of submarine pipeline laying are: S-type laying method, J type pipe laying method, winding pipe laying method and towing laying method. This paper introduces the distribution of these pipe laying methods, and mainly introduces the related contents of the coil pipe laying method. Winding pipe laying method is a kind of ocean pipe laying method which began to develop at the end of the 20th century. This method has been applied in many countries because of its high efficiency and low cost. This paper mainly introduces the construction process of winding pipe laying method, and analyzes and studies the process of pipe winding in the course of pipe laying. On the basis of certain assumptions and simplification, the stress of pipeline in the process of winding is theoretically analyzed and calculated. Combined with finite element method, the model of pipeline coiling is established by using Abaqus finite element analysis software, and the stress model of pipeline coiling is analyzed and calculated, which provides theoretical basis and reference for engineering construction. The main contents of this paper are as follows: (1) this paper introduces several laying methods and their characteristics of submarine pipelines. The paper mainly introduces the construction process of the coiled pipe laying method, puts forward the points for attention in order to ensure the smooth construction, and provides the reference for the project management of the construction process. (2) aiming at the process of the pipeline coiling, The stress of pipeline is analyzed and studied in detail. The bending force of pipeline in elastic stage is analyzed by the method of theoretical calculation. The maximum bending moment of pipeline in elastic stage is analyzed, which provides a theoretical basis for plastic analysis. (3) Analysis and study of pipeline in pure bending state. The stress state of pipeline is calculated by theoretical calculation and finite element analysis according to whether the reinforcement of material is considered. The relationship between bending moment and curvature is found. (4) according to the actual engineering situation, the coaction of axial force and bending moment is applied to the process of pipeline winding. The stress and deformation state of pipeline under the action of tension and bending is analyzed by using the method of theoretical calculation and finite element analysis. It provides a reference for the application of axial force and bending moment in the process of construction and the selection of appropriate disc.
【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P756.2
本文編號：2292631
[Abstract]:In the process of exploitation of offshore oil and gas resources, submarine pipeline is an indispensable part. Submarine pipelines are mainly used for the production and transportation of submarine oil and gas. Because the submarine pipeline laying technology is complex and the marine environment is complex and changeable, the submarine pipeline laying is much more difficult than the land laying, so it is very important to study the construction technology of submarine pipeline laying. At present, the main methods of submarine pipeline laying are: S-type laying method, J type pipe laying method, winding pipe laying method and towing laying method. This paper introduces the distribution of these pipe laying methods, and mainly introduces the related contents of the coil pipe laying method. Winding pipe laying method is a kind of ocean pipe laying method which began to develop at the end of the 20th century. This method has been applied in many countries because of its high efficiency and low cost. This paper mainly introduces the construction process of winding pipe laying method, and analyzes and studies the process of pipe winding in the course of pipe laying. On the basis of certain assumptions and simplification, the stress of pipeline in the process of winding is theoretically analyzed and calculated. Combined with finite element method, the model of pipeline coiling is established by using Abaqus finite element analysis software, and the stress model of pipeline coiling is analyzed and calculated, which provides theoretical basis and reference for engineering construction. The main contents of this paper are as follows: (1) this paper introduces several laying methods and their characteristics of submarine pipelines. The paper mainly introduces the construction process of the coiled pipe laying method, puts forward the points for attention in order to ensure the smooth construction, and provides the reference for the project management of the construction process. (2) aiming at the process of the pipeline coiling, The stress of pipeline is analyzed and studied in detail. The bending force of pipeline in elastic stage is analyzed by the method of theoretical calculation. The maximum bending moment of pipeline in elastic stage is analyzed, which provides a theoretical basis for plastic analysis. (3) Analysis and study of pipeline in pure bending state. The stress state of pipeline is calculated by theoretical calculation and finite element analysis according to whether the reinforcement of material is considered. The relationship between bending moment and curvature is found. (4) according to the actual engineering situation, the coaction of axial force and bending moment is applied to the process of pipeline winding. The stress and deformation state of pipeline under the action of tension and bending is analyzed by using the method of theoretical calculation and finite element analysis. It provides a reference for the application of axial force and bending moment in the process of construction and the selection of appropriate disc.
【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P756.2
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