| 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.
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发表期刊 | OCEAN ENGINEERING
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| 2012-08-01
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卷号 | 50页码:44-52 |
ISSN | 0029-8018
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摘要 | Ocean-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. |
关键词 | Sloping Seabed
Deepwater Pipeline
On-bottom Stability
Ocean Currents
Partially-embedded Pipeline
Scour
Flow
Stability
Currents
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学科领域 | 流固耦合作用
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URL | 查看原文
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收录类别 | SCI
; EI
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语种 | 英语
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WOS记录号 | WOS:000306769400006
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项目资助者 | This 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.
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课题组名称 | LMFS流固土耦合力学(LHO)
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论文分区 | 一类
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://dspace.imech.ac.cn/handle/311007/46647
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专题 | 流固耦合系统力学重点实验室
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通讯作者 | Gao, FP; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
推荐引用方式 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.
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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.
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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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