Fatigue analysis of a steel catenary riser at touchdown zone with seabed resistance and hydrodynamic forces
Fatigue analysis of a steel catenary riser at touchdown zone with seabed resistance and hydrodynamic forces
复制标题
具有海底阻力和水动力作用的着陆区钢悬链线立管的疲劳分析
DOI：
10.1016/j.oceaneng.2021.110446
复制
发表时间：
2022-01
影响因子：
5
通讯作者：
Tang Wenyong
中科院分区：
文献类型：
--
作者：
Yuan Yuchao;Zheng Mengtian;Xue Hongxiang;Duan Zhongdi;Tang Wenyong
在实际海洋环境下，复杂的水动力和海底非线性阻力是钢悬链线接触区结构疲劳损伤累积的两个主要来源，两者之间的显著耦合效应值得重视。本文建立了一种可用于多物理场激励下SCR动力响应预测和疲劳损伤分析的数值模型。对于一个全尺寸SCR，一个系统的案例矩阵，包括不同的立管参数，土壤参数和操作参数进行了模拟。分别分析了立管在水动力和海床阻力作用下的疲劳损伤。讨论了这两种外激励对立管疲劳特性的耦合作用。最后，在组合情况下进行了海底土壤特性的参数敏感性研究。水动力与海床阻力的耦合作用使得立管的疲劳问题更加严重，远大于单独疲劳损伤与单一激励的简单代数叠加，在实际工程设计中需要考虑。
Under the actual ocean environment, the complicated hydrodynamic forces and nonlinear seabed resistance are two main sources of the structural fatigue damage accumulation for steel catenary risers (SCRs) at touchdown zone, and the significant coupling effect between them is worthy of enough attention. An alternative numerical model of SCRs for the dynamic response prediction as well as fatigue damage analysis with multi-physics field excitations is established in this paper. For a full-scale SCR, a systematic case matrix including different riser parameters, soil parameters and operation parameters is simulated. The separate fatigue damage of the riser with hydrodynamic forces and seabed resistance is analyzed respectively. Then the coupling effect between these two external excitations on the riser's fatigue characteristics is discussed. Finally, a parameter sensitivity investigation regarding the seabed soil properties is carried out under combined cases. The coupling effect between hydrodynamic forces and seabed resistance makes the riser's fatigue issue more serious, much larger than the simple algebraic superposition of the separate fatigue damage with the single excitation, which needs to be considered in the practical engineering design of SCRs.
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DOI：
10.1115/omae2004-51563
发表时间：
2004
期刊：
--
影响因子：
--
作者：
G. Moe;T. Teigen;P. Simantiras;N. Willis;H. Lie
通讯作者：
G. Moe;T. Teigen;P. Simantiras;N. Willis;H. Lie
影响因子：
3.9
作者：
Ehssan Zargar;M. Kimiaei;M. Randolph
通讯作者：
Ehssan Zargar;M. Kimiaei;M. Randolph
影响因子：
5
作者：
H. Elosta;Shan Huang;A. Incecik
通讯作者：
H. Elosta;Shan Huang;A. Incecik
影响因子：
3.6
作者：
Yuchao Yuan;Hong-xiang Xue;Wenyong Tang
通讯作者：
Yuchao Yuan;Hong-xiang Xue;Wenyong Tang
考虑涡激振动的钢悬链线立管接地区非线性立管-海底相互作用响应
影响因子：
5
作者：
Yuan Yuchao;Zheng Mengtian;Xue Hongxiang;Tang Wenyong
通讯作者：
Tang Wenyong