| 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
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| Corresponding Author | Qi, Wengang([email protected]) ; Gao, Fuping([email protected]) |
| Source Publication | JOURNAL OF MARINE SCIENCE AND ENGINEERING
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| 2022-02-01 | |
| Volume | 10Issue:2Pages:21 |
| Abstract | 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. |
| Keyword | deep-sea pipeline clayey seabed oblique load bearing capacity failure envelope critical pipe weight |
| DOI | 10.3390/jmse10020299 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000774863500001 |
| WOS Keyword | ULTIMATE BEARING CAPACITY ; FINITE-ELEMENT-ANALYSIS ; LINE FIELD SOLUTION ; SOIL INTERACTION ; EMBEDMENT ; PENETRATION ; MECHANISMS ; MODEL |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Ocean ; Oceanography |
| Funding Project | National Natural Science Foundation of China[11825205] ; National Natural Science Foundation of China[12061160463] ; Youth Innovation Promotion Association CAS[2021018] |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Qi, Wengang ; Gao, Fuping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88785 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation 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.Rp_Au:Qi, Wengang, Gao, Fuping |
| 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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| Jp2022FA542_2022_Pre（4148KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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