| 钢悬链线立管与海底相互作用弹性基础梁模拟方法研究 |
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| 引用本文： | 孟庆飞,黄维平.钢悬链线立管与海底相互作用弹性基础梁模拟方法研究[J].海洋工程,2013,31(4):74-78. |
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| 作者姓名： | 孟庆飞 黄维平 |
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| 作者单位： | 中国海洋大学山东省海洋工程重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51079136,51179179,51239008) |
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| 摘 要： | 采用弹性基础梁模型,模拟钢悬链线立管(steel catenary riser,SCR)与海床土的相互作用,推导了弹性基础梁模型的有限元公式,基于该模型编制了钢悬链式立管的动力分析程序,在此基础上,分析了在浮体运动及环境载荷作用下,钢悬链线立管触地点区域的动力响应特征,并与弹簧支撑模型进行了比较。研究表明,弹性基础梁模型对单元长度的敏感性较低,可采用较长的单元,从而减少计算量。
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| 关 键 词： | 弹性基础梁 钢悬连线立管 海床 触地点 |
Simulation of SCR and seabed with elastic foundation beam model |
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| MENG Qing-fei and HUANG Wei-ping.Simulation of SCR and seabed with elastic foundation beam model[J].Ocean Engineering,2013,31(4):74-78. |
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| Authors: | MENG Qing-fei and HUANG Wei-ping |
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| Institution: | (Shandong Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China) |
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| Abstract: | By use of the elastic foundation beam model, the interaction between steel catenary riser and seabed is studied in this paper. The finite element equation of elastic foundation beam model is derived according to the minimum potential energy principle, and numerical analysis in time domain is conducted based on finite element method. The dynamic responses of touch down point (TDP) to platform motion load are computed and the result is compared with that of the nodal spring model. The results show that elastic foundation beam model has low sensitivity to element length and is suitable for longer element. This method improves the computation efficiency with a higher precision. |
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| Keywords: | elastic foundation beam steel catenary riser seabed touch down point |
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