Physical modeling of the axial pipe-soil interaction for pipeline walking on a sloping sandy seabed | |
Shi YM(师玉敏)1,2; Wang N(汪宁)2,4; Gao FP(高福平)1,2; Qi WG(漆文刚)1,2; Wang JQ3 | |
发表期刊 | OCEAN ENGINEERING |
2019-04-15 | |
卷号 | 178页码:20-30 |
ISSN | 0029-8018 |
摘要 | Axial pipe-soil interaction is crucial for the prediction of pipeline walking, especially on a sloping seabed. In this study, a mechanical-actuator facility has been specially designed and utilized to simulate the axial pipe-soil interactions along a sloping sandy seabed. Based on dimensional analyses, an apparent axial anti-sliding coefficient is proposed to describe the anti-sliding capacity for pipeline walking on a sloping seabed under the fully-drained condition. Effects of the pipeline surface roughness, the submerged weight (G) of the pipeline and the slope angle (alpha) of the seabed on the apparent axial anti-sliding coefficient are investigated experimentally. The experimental results indicate that, for a fixed value of the non-dimensional submerged pipeline weight, both the ultimate anti-sliding capacity and the corresponding mobilization displacement increase with the increase of the slope angle of the seabed. There exist approximately linear correlations between the apparent anti-sliding coefficient and the examined seabed slope angle (- 9 degrees <= alpha <= 9 degrees) or the non-dimensional submerged pipeline weight (0.34 <= G <= 0.81). An expression for the apparent axial anti-sliding coefficient incorporating an updated wedging factor is finally deduced and validated with the present experimental results. This axial pipe-soil interaction model may help assessing the pipeline walking along subsea continental slopes. |
关键词 | Sloping seabed Pipeline walking Pipeline-seabed interaction Physical modeling |
DOI | 10.1016/j.oceaneng.2019.02.059 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000464483700002 |
关键词[WOS] | SHEAR-STRENGTH ; INTERFACES ; RESISTANCE |
WOS研究方向 | Engineering ; Oceanography |
WOS类目 | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
资助项目 | National Science Fund for Distinguished Young Scholars[11825205] ; Strategic Priority Research Program (Type-B) of CAS[XDB22030000] ; Youth Innovation Promotion Association CAS[2012014] |
项目资助者 | National Science Fund for Distinguished Young Scholars ; Strategic Priority Research Program (Type-B) of CAS ; Youth Innovation Promotion Association CAS |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | Gao, Fu-Ping |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/78732 |
专题 | 流固耦合系统力学重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.CNOOC, Res Inst, Beijing 100027, Peoples R China; 4.China Acad Bldg Res, Inst Fdn Engn, Beijing 100013, Peoples R China |
推荐引用方式 GB/T 7714 | Shi YM,Wang N,Gao FP,et al. Physical modeling of the axial pipe-soil interaction for pipeline walking on a sloping sandy seabed[J]. OCEAN ENGINEERING,2019,178:20-30. |
APA | Shi YM,Wang N,Gao FP,Qi WG,&Wang JQ.(2019).Physical modeling of the axial pipe-soil interaction for pipeline walking on a sloping sandy seabed.OCEAN ENGINEERING,178,20-30. |
MLA | Shi YM,et al."Physical modeling of the axial pipe-soil interaction for pipeline walking on a sloping sandy seabed".OCEAN ENGINEERING 178(2019):20-30. |
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