| 管道热屈曲动力过程数值模拟 |
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| 引用本文： | 王立忠,王宽君,施若苇.管道热屈曲动力过程数值模拟[J].海洋工程,2015,33(5):73-80. |
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| 作者姓名： | 王立忠 王宽君 施若苇 |
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| 作者单位： | 浙江大学 建筑工程学院， 杭州 310058;浙江大学 建筑工程学院， 杭州 310058;浙江大学 建筑工程学院， 杭州 310058 |
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| 基金项目： | 国家杰出青年科学基金资助项目（51325901）；国家自然科学基金面上资助项目（51279176） |
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| 摘 要： | 运输高温高压油气的海底管道会发生整体热屈曲现象。管道热屈曲过程中可能会产生平衡状态的跃迁(snapthrough),且这样的跃迁过程必然会伴随着动力响应。管道热屈曲动力过程中侧向弹出的速度以及轴向缩进的速度对管土相互作用参数的取值有很大影响,然而关于管道热屈曲动力过程的研究却很少。本文给出了数值模拟过程中管道系统阻尼值和升温速率的确定方法,研究了管道初始几何缺陷以及海床参数对管道热屈曲动力过程的影响。
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| 关 键 词： | 管道热屈曲 动力过程 阻尼值 升温速率 初始几何缺陷 海床参数 |
Numerical simulation for the dynamic process of pipeline buckling |
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| WANG Lizhong,WANG Kuanjun and SHI Ruowei.Numerical simulation for the dynamic process of pipeline buckling[J].Ocean Engineering,2015,33(5):73-80. |
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| Authors: | WANG Lizhong WANG Kuanjun and SHI Ruowei |
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| Institution: | College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China |
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| Abstract: | Subsea pipelines are used for transporting high temperature and high pressure oil and gas, which may lead to global buckling of the pipeline. In the process of thermal buckling, the snap-through of the pipeline always exists, which is regarded as a dynamic process. The velocities of the lateral and axial in the dynamic process have great effect on the evaluation of parameters in pipeline soil interaction analysis. But the study of thermal buckling dynamic process is rarely seen. In this paper, the dynamic process of pipeline thermal buckling is simulated by ABAQUS, and a reasonable evaluation of damping value and heating rate is provided. The variation of the initial geometric imperfection and seabed parameters are also taken into consideration to analyse the dynamic process of pipeline thermal buckling. |
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| Keywords: | subsea pipeline thermal buckling dynamic process damping value heating rate initial geometric imperfection seabed parameters |
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