Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline | |
Li H1; Wang SQ1; Chen XG1; Hu C(胡存)2; Liu JZ3 | |
Corresponding Author | Wang, Shuqing([email protected]) |
Source Publication | MARINE GEORESOURCES & GEOTECHNOLOGY |
2019-11-13 | |
Pages | 12 |
ISSN | 1064-119X |
Abstract | Wave-induced liquefaction depth is a key factor in providing the safe design of submarine pipelines. However, existing numerical studies simplify the seabed as a flat foundation and ignore the effect of scour depth on wave-induced seabed response and liquefaction depth. The effects of scour depth on wave-induced seabed response and liquefaction depth around a submarine pipeline are investigated, and a three-dimensional hybrid model combining Reynolds-averaged Navier-Stokes (RANS) equations with Biot's poroelastic theory for wave propagation and anisotropic seabed is proposed in this study. Numerical results indicate that local scour leads to the redistribution of the initial effective stress within the seabed around the pipeline. With increasing scour depths, the maximum liquefaction depth beneath the pipeline simultaneously decreases. When the scour depth reaches a certain depth, the seabed seems to no longer liquefy. Parametric studies indicate that the liquefaction depth increases by either decreasing the saturation degree or increasing the wave height. Under anisotropic seabed conditions, a nonlinear relationship exists between the maximum liquefaction depth of the seabed and the seabed permeability. |
Keyword | Pipeline liquefaction depth scour depth pore pressure response anisotropic seabed |
DOI | 10.1080/1064119X.2019.1689588 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000496379800001 |
WOS Keyword | INDUCED PORE PRESSURES ; CIRCULAR-CYLINDER ; FLOW ; INSTABILITY ; GENERATION ; MECHANISM ; MODEL |
WOS Research Area | Engineering ; Oceanography ; Mining & Mineral Processing |
WOS Subject | Engineering, Ocean ; Engineering, Geological ; Oceanography ; Mining & Mineral Processing |
Funding Project | National Science Fund for Distinguished Young Scholars[51625902] ; Taishan Scholars Program of Shandong Province[TS201511016] ; Taishan Scholars Program of Shandong Province[2016QNRC001] |
Funding Organization | National Science Fund for Distinguished Young Scholars ; Taishan Scholars Program of Shandong Province |
Classification | Q3 |
Ranking | 4 |
Contributor | Wang, Shuqing |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/81404 |
Collection | 流固耦合系统力学重点实验室 |
Affiliation | 1.Ocean Univ China, Shandong Prov Key Lab Ocean Engn, Qingdao 266100, Shandong, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 3.Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing, Jiangsu, Peoples R China |
Recommended Citation GB/T 7714 | Li H,Wang SQ,Chen XG,et al. Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2019:12.Rp_Au:Wang, Shuqing |
APA | Li H,Wang SQ,Chen XG,胡存,&Liu JZ.(2019).Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline.MARINE GEORESOURCES & GEOTECHNOLOGY,12. |
MLA | Li H,et al."Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline".MARINE GEORESOURCES & GEOTECHNOLOGY (2019):12. |
Files in This Item: | Download All | |||||
File Name/Size | DocType | Version | Access | License | ||
Jp2019486.pdf(2068KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment