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IMECH-IR  > 流固耦合系统力学重点实验室(2012-)  > 期刊论文
Title:
Submarine pipeline lateral instability on a sloping sandy seabed
Author: Gao FP(高福平); Han XT(韩希霆); Cao J; Sha Y; Cui JS(崔金声)
Source: OCEAN ENGINEERING
Issued Date: 2012-08-01
Volume: 50, Pages:44-52
Abstract: 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.
Keyword: Sloping seabed ; Deepwater pipeline ; On-bottom stability ; Ocean currents ; Partially-Embedded Pipeline ; Scour ; Flow ; Stability ; Currents
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Gao, FP ; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Correspondent Email: fpgao@imech.ac.cn
Related URLs: 查看原文
WOS ID: WOS:000306769400006
ISSN: 0029-8018
Rank: [Gao, Fu-Ping;Han, Xi-Ting; Cui, Jin-Sheng] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; [Cao, Jing; Sha, Yong] China Natl Offshore Oil Co CNOOC Res Inst, Beijing 100027, Peoples R China
Subject: 固体力学::流固耦合作用
Department: LMFS流固土耦合力学(LHO)
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/46647
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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Recommended Citation:
Gao FP,Han XT,Cao J,et al. Submarine pipeline lateral instability on a sloping sandy seabed[J]. OCEAN ENGINEERING,2012-08-01,50:44-52.
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