Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed

doi:10.1016/j.oceaneng.2017.09.013

IMECH-IR > 流固耦合系统力学重点实验室

	Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed
	Xu LG(许雷阁); Lin M(林缅); Lin, M (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China.
发表期刊	OCEAN ENGINEERING
	2017-11-15
卷号	145 页码:344-358
ISSN	0029-8018
摘要	For pipelines on uneven seabed, upheaval buckling may occur if the axial compressive force reaches the critical force of upheaval buckling. The critical axial force is sensitive to the seabed undulation, However, the effect of the seabed undulation on the critical force has not been completely discussed. Moreover, effect of the initial stress which accumulates in the pipe wall when the pipeline conforms to the seabed undulation under self-weight has been rarely examined. This paper mainly focuses on the effect of the initial stress. Using numerical tools developed with the Vector Form Intrinsic Finite Element (VFIFE) method, effect of the initial stress is proved significant. Subsequently with the theory of dimensional analysis, a formula of the critical axial force is derived. This formula covers the dimensionless undulation length and the Out-of-Straight (OOS) of the seabed undulation. Considering three seabed undulation shapes, coefficients in the formulas are determined with numerical results from the VFIFE simulations. Finally, the proposed formulas are proved applicable for pipes with different properties and within the error range of +/- 10% for pipelines in continuous contact with the seabed in a large dimensionless scope.
关键词	The Vfife Method Dimensional Analysis Upheaval Bucking Uneven Seabed
DOI	10.1016/j.oceaneng.2017.09.013
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000414886600030
关键词[WOS]	SUBSEA PIPELINES ; BURIED PIPELINES ; MODEL
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
项目资助者	Key Instrument Developing Project of Chinese Academy of Sciences(ZDYZ2012-1-08-02) ; National High-tech R&D Program of China(2006AA09Z301) ; National Natural Science Foundation of China(11302235)
课题组名称	LMFS海洋环境与工程(LEM)
论文分区	一类
力学所作者排名	1
引用统计	被引频次：26[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/311007/71931
专题	流固耦合系统力学重点实验室
通讯作者	Lin, M (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Xu LG,Lin M,Lin, M . Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed[J]. OCEAN ENGINEERING,2017,145:344-358.
APA	许雷阁,林缅,&Lin, M .(2017).Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed.OCEAN ENGINEERING,145,344-358.
MLA	许雷阁,et al."Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed".OCEAN ENGINEERING 145(2017):344-358.

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