摘要
海底管线的在位稳定性问题是海底管线设计中的关键问题之一,为对海底管线的设计提供理论依据,采用有限元软件ABAQUS对管土系统进行分析。海床土体采用Ramberg-Osgood模型进行模拟,管土接触面采用"接触对"的算法进行处理,解决了管道嵌入海床的动边界接触问题。通过改变管道的水下重、环境载荷、管径、屈服应力等参数进行计算。数值计算结果表明这些参数对管道的沉降量都有一定程度的影响。
The on-bottom stability of submarine pipeline is one of the key problems in submarine pipeline design,in order to offer the theory ground for the pipe/soil interaction,finite element software ABAQUS has been adopted to analyze the pipe/soil interaction.The seabed soil has been adopted to simulate the soil in the form of dynamic Ramberg-Osgood elastic-plastic model.The contact between pipe and soil is simulated with a ＇contact pair＇,solving the moving boundary contact problem.The computation was executed via changing the parameters of the pipe＇s subweights,environmental loadings,pipe＇s diameter,yield stress.Numerical result indicates that these parameters have a certain degree of impact on the pipeline＇s stability.
出处
《中国海洋平台》
2010年第3期17-20,共4页
China offshore Platform
