| Cross-Flow VIV-Induced Fatigue Damage of Deepwater Steel Catenary Riser at Touch-Down Point简 |
| |
| 引用本文： | 王坤鹏,唐文勇,薛鸿祥.Cross-Flow VIV-Induced Fatigue Damage of Deepwater Steel Catenary Riser at Touch-Down Point简[J].中国海洋工程,2014,28(1):81-93. |
| |
| 作者姓名： | 王坤鹏 唐文勇 薛鸿祥 |
| |
| 基金项目： | The work was financially supported by the National Natural Science Foundation of China （Grant No. 51009089）, and the Specialized Research Fund for the Doctoral Program of Higher Education of China （Grant No. 20100073120017）. |
| |
| 摘 要： | A prediction model of the deepwater steel catenary riser VIV is proposed based on the forced oscillation test data, taking into account the riser-seafloor interaction for the cross-flow VIV-induced fatigue damage at touch-down point （TDP）. The model will give more reasonable simulation of SCR response near TDP than the previous pinned truncation model. In the present model, the hysteretic riser-soil interaction model is simplified as the linear spring and damper to simulate the seafloor, and the damping is obtained according to the dissipative power during one periodic riser-soil interaction. In order to validate the model, the comparison with the field measurement and the results predicted by Shear 7 program of a full-scale steel catenary riser is carried out. The main induced modes, mode frequencies and response amplitude are in a good agreement. Furthermore, the parametric studies are carried out to broaden the understanding of the fatigue damage sensitivity to the upper end in-plane offset and seabed characteristics. In addition, the fatigue stress comparison at TDP between the truncation riser model and the present full riser model shows that the existence of touch-down zones is very important for the fatigue damage assessment of steel catenary riser at TDP.
|
| 关 键 词： | 疲劳损伤 涡激振动 悬链线 接地点 立管 深水 横流 管土相互作用 |
Cross-flow VIV-induced fatigue damage of deepwater steel catenary riser at touch-down point |
| |
| Kun-peng Wang,Wen-yong Tang,Hong-xiang Xue.Cross-flow VIV-induced fatigue damage of deepwater steel catenary riser at touch-down point[J].China Ocean Engineering,2014,28(1):81-93. |
| |
| Authors: | Kun-peng Wang Wen-yong Tang Hong-xiang Xue |
| |
| Institution: | 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
|
| |
| Abstract: | A prediction model of the deepwater steel catenary riser VIV is proposed based on the forced oscillation test data, taking into account the riser-seafloor interaction for the cross-flow VIV-induced fatigue damage at touch-down point (TDP). The model will give more reasonable simulation of SCR response near TDP than the previous pinned truncation model. In the present model, the hysteretic riser-soil interaction model is simplified as the linear spring and damper to simulate the seafloor, and the damping is obtained according to the dissipative power during one periodic riser-soil interaction. In order to validate the model, the comparison with the field measurement and the results predicted by Shear 7 program of a full-scale steel catenary riser is carried out. The main induced modes, mode frequencies and response amplitude are in a good agreement. Furthermore, the parametric studies are carried out to broaden the understanding of the fatigue damage sensitivity to the upper end in-plane offset and seabed characteristics. In addition, the fatigue stress comparison at TDP between the truncation riser model and the present full riser model shows that the existence of touch-down zones is very important for the fatigue damage assessment of steel catenary riser at TDP. |
| |
| Keywords: | VIV steel catenary riser touch-down point riser-soil interaction fatigue damage |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
| 点击此处可从《中国海洋工程》浏览原始摘要信息 |
| 点击此处可从《中国海洋工程》下载免费的PDF全文 |
