【作者】 梁光强； 张伟； 齐金龙； 李永宇；

【Author】 LIANG Guangqiang 1,ZHANG Wei 2,QI Jinlong 1,LI Yongyu 1 (1.China offshore oil engineering corporation,Tianjin University,Tianjin 300451,China ;2.School of Civil Engineering,Tianjin University,Tianjin 300072,China)

【机构】 海洋石油工程股份有限公司； 天津大学建筑工程学院；

【摘要】 海底管道在海洋石油开发中扮演着越来越重要的角色。随着对海底管道工作要求的不断提高,高温高压管道发生的屈曲失效问题也越来越多,正日益引起国内外学者的关注和研究。本论文应用大型通用有限元分析软件ABAQUS,利用接触模型考虑管土相互作用,建立了三维管道有限元弹塑性数值模型,对不同初始缺陷的高温高压埋设管道进行了数值模拟,得出不同缺陷影响下管道屈曲规律。有限元模型计算得出的结果跟Pedersen&Jensen解析理论有些偏差,得出的基本规律跟TaylorandTran实验基本相同,可以用于指导工程实践。更多还原

【Abstract】 Submarine pipelines are playing a more and more important role in the exploitation of the ocean oil.Along with the higher requirement of the working conditions,submarine pipelines have more probability of invalid occurrence in buckling.The buckling of pipelines is attracting scholars at home and abroad to make researches.The general finite elements analysis (FEA) software ABAQUS is applied to build the three-dimensional and elastic-plastic models of the pipelines with pipelines-soil interaction,to make numerical simulation with different initial imperfections of the buried pipelines,and gain the buckling principles affected by different initial imperfections.By comparison,there are some deviations between the FEA results and the theoretical results,and the principle is the same as Taylor and Tran’s generally,so the research in this paper can be used as guidance in the real projects.更多还原