IMECH-IR  > 流固耦合系统力学重点实验室
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(王宁)2,4; Gao FP(高福平)1,2; Qi WG(漆文刚)1,2; Wang JQ3
Corresponding AuthorGao, Fu-Ping(fpgao@imech.ac.cn)
Source PublicationOCEAN ENGINEERING
2019-04-15
Volume178Pages:20-30
ISSN0029-8018
AbstractAxial 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.
KeywordSloping seabed Pipeline walking Pipeline-seabed interaction Physical modeling
DOI10.1016/j.oceaneng.2019.02.059
Indexed BySCI ; EI
Language英语
WOS IDWOS:000464483700002
WOS KeywordSHEAR-STRENGTH ; INTERFACES ; RESISTANCE
WOS Research AreaEngineering ; Oceanography
WOS SubjectEngineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
Funding ProjectNational Science Fund for Distinguished Young Scholars[11825205] ; Strategic Priority Research Program (Type-B) of CAS[XDB22030000] ; Youth Innovation Promotion Association CAS[2012014]
Funding OrganizationNational Science Fund for Distinguished Young Scholars ; Strategic Priority Research Program (Type-B) of CAS ; Youth Innovation Promotion Association CAS
Classification一类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78733
Collection流固耦合系统力学重点实验室
Affiliation1.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
Recommended Citation
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 师玉敏,王宁,高福平,漆文刚,&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 师玉敏,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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