IMECH-IR  > 流固耦合系统力学重点实验室
Submarine pipeline lateral instability on a sloping sandy seabed
Gao FP(高福平); Han XT(韩希霆); Cao J; Sha Y; Cui JS(崔金声); Gao, FP; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationOCEAN ENGINEERING
2012-08-01
Volume50Pages:44-52
ISSN0029-8018
AbstractOcean-current induced pipeline on-bottom stability on a sloping sandy seabed involves a complex interaction between the hydrodynamic loading, the untrenched pipeline and the neighboring soil. In this study, a newly-designed pipe-soil interaction facility and a flow-structure-soil interaction flume have been utilized for full-scale physical modeling of the pipeline instability on a sloping sand-bed, including the downslope instability and the upslope instability. Unlike the pipeline lateral stability on the horizontal seabed, an initial lateral-soil-resistance is developed and the static-instability might be triggered for the sloping seabed. According to dimensionless analyses, an ultimate lateral-soil-resistance coefficient is proposed to describe the interaction of the pipe with the sloping sand-bed. Experimental results indicate that sand-bed slope angle, pipe submerged weight and end-constraints have much influence on pipe on-bottom stability. No matter for the upslope instability or the downslope instability, the corresponding lateral-soil-resistance coefficient for a sloping sand-bed is larger than that for a horizontal sand-bed.
KeywordSloping Seabed Deepwater Pipeline On-bottom Stability Ocean Currents Partially-embedded Pipeline Scour Flow Stability Currents
Subject Area流固耦合作用
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000306769400006
Funding OrganizationThis work is financially supported by Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. KJCX2-YW-L02) and China National S&T Major Project (Grant No. 2008ZX05026-005-09). Helpful discussion with Senior Engineer X. Jia from CNOOC Research Institute and the technical assistances from Mr. F.L. Zhang and Mr. H.T. Zhang are greatly appreciated.
DepartmentLMFS流固土耦合力学(LHO)
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46647
Collection流固耦合系统力学重点实验室
Corresponding AuthorGao, FP; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Gao FP,Han XT,Cao J,et al. Submarine pipeline lateral instability on a sloping sandy seabed[J]. OCEAN ENGINEERING,2012,50:44-52
APA 高福平.,韩希霆.,Cao J.,Sha Y.,崔金声.,...&Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China..(2012).Submarine pipeline lateral instability on a sloping sandy seabed.OCEAN ENGINEERING,50,44-52.
MLA 高福平,et al."Submarine pipeline lateral instability on a sloping sandy seabed".OCEAN ENGINEERING 50(2012):44-52.
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