| 弹塑性海床上的海底管道沉降特性分析 |
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| 引用本文： | 任艳荣,刘玉标. 弹塑性海床上的海底管道沉降特性分析[J]. 中国海洋平台, 2010, 25(3): 17-20 |
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| 作者姓名： | 任艳荣 刘玉标 |
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| 作者单位： | 1. 北京建筑工程学院,北京,100044
2. 中科院力学研究所,北京,100080 |
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| 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。
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| 关 键 词： | 海底管道 稳定性 Ramberg-Osgood模型 沉降量 |
The Analysis of Pipe's Penetration Laid on the Elastic-Plastic Seabed |
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| REN Yan-rong,LIU Yu-biao. The Analysis of Pipe's Penetration Laid on the Elastic-Plastic Seabed[J]. China offshore Platform, 2010, 25(3): 17-20 |
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| Authors: | REN Yan-rong LIU Yu-biao |
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| Affiliation: | 1.Beijing University of Civil Engineering and Architecture,Beijing 100044,China;2.DES,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China) |
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| Abstract: | 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. |
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| Keywords: | submarine pipelines stability Ramberg-Osgood model penetration |
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