Submarine pipeline lateral instability on a sloping sandy seabed

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.
发表期刊	OCEAN ENGINEERING
	2012-08-01
卷号	50 页码:44-52
ISSN	0029-8018
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
学科领域	流固耦合作用
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000306769400006
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.
课题组名称	LMFS流固土耦合力学(LHO)
论文分区	一类
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/46647
专题	流固耦合系统力学重点实验室
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.
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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