Predicting the Instability Trajectory of an Obliquely Loaded Pipeline on a Clayey Seabed

doi:10.3390/jmse10020299

IMECH-IR > 流固耦合系统力学重点实验室

	Predicting the Instability Trajectory of an Obliquely Loaded Pipeline on a Clayey Seabed
	Wang N(汪宁)1,2 ; Qi WG(漆文刚)1,2 ; Gao FP(高福平)1,2
通讯作者	Qi, Wengang(qiwengang@imech.ac.cn) ; Gao, Fuping(fpgao@imech.ac.cn)
发表期刊	JOURNAL OF MARINE SCIENCE AND ENGINEERING
	2022-02-01
卷号	10 期号:2 页码:21
摘要	Predicting the instability trajectory of an obliquely loaded pipeline on the seabed is vital for the global buckling assessment. To numerically investigate the obliquely loaded pipe-soil interactions, a plane strain elastoplastic finite element model incorporating the adaptive meshing technique and the contact-pair algorithm is employed and verified with the existing experimental data and the analytical predictions. The evolution of slip mechanisms within the underlying soil is simulated, indicating the instability direction of the pipe, and the corresponding ultimate soil resistance is closely correlated. It is also indicated that the ultimate load angle is in the positive correlation with the movement angle, the dimensionless embedment of the pipe and the roughness coefficient of the pipe-soil interface. On the basis of numerous simulations, a force-resultant plasticity model including the bearing capacity envelope and the flow rule is proposed for predicting the behavior of a partially embedded pipeline on the clayey seabed. Finally, an explicit expression with respect to the critical submerged weight of the pipe is derived for distinguishing the lateral instability of a pipe between the 'light' and the 'heavy' mode.
关键词	deep-sea pipeline clayey seabed oblique load bearing capacity failure envelope critical pipe weight
DOI	10.3390/jmse10020299
收录类别	SCI
语种	英语
WOS记录号	WOS:000774863500001
关键词[WOS]	ULTIMATE BEARING CAPACITY ; FINITE-ELEMENT-ANALYSIS ; LINE FIELD SOLUTION ; SOIL INTERACTION ; EMBEDMENT ; PENETRATION ; MECHANISMS ; MODEL
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China[11825205] ; National Natural Science Foundation of China[12061160463] ; Youth Innovation Promotion Association CAS[2021018]
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
论文分区	二类
力学所作者排名	1
RpAuthor	Qi, Wengang ; Gao, Fuping
引用统计	被引频次：3[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/311007/88785
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang N,Qi WG,Gao FP. Predicting the Instability Trajectory of an Obliquely Loaded Pipeline on a Clayey Seabed[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2022,10,2,:21.
APA	汪宁,漆文刚,&高福平.(2022).Predicting the Instability Trajectory of an Obliquely Loaded Pipeline on a Clayey Seabed.JOURNAL OF MARINE SCIENCE AND ENGINEERING,10(2),21.
MLA	汪宁,et al."Predicting the Instability Trajectory of an Obliquely Loaded Pipeline on a Clayey Seabed".JOURNAL OF MARINE SCIENCE AND ENGINEERING 10.2(2022):21.

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