IMECH-IR  > 流固耦合系统力学重点实验室
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 AuthorWang, Shuqing(shuqing@ouc.edu.cn)
Source PublicationMARINE GEORESOURCES & GEOTECHNOLOGY
2019-11-13
Pages12
ISSN1064-119X
AbstractWave-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.
KeywordPipeline liquefaction depth scour depth pore pressure response anisotropic seabed
DOI10.1080/1064119X.2019.1689588
Indexed BySCI ; EI
Language英语
WOS IDWOS:000496379800001
WOS KeywordINDUCED PORE PRESSURES ; CIRCULAR-CYLINDER ; FLOW ; INSTABILITY ; GENERATION ; MECHANISM ; MODEL
WOS Research AreaEngineering ; Oceanography ; Mining & Mineral Processing
WOS SubjectEngineering, Ocean ; Engineering, Geological ; Oceanography ; Mining & Mineral Processing
Funding ProjectNational Science Fund for Distinguished Young Scholars[51625902] ; Taishan Scholars Program of Shandong Province[TS201511016] ; Taishan Scholars Program of Shandong Province[2016QNRC001]
Funding OrganizationNational Science Fund for Distinguished Young Scholars ; Taishan Scholars Program of Shandong Province
ClassificationQ3
Ranking4
ContributorWang, Shuqing
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81404
Collection流固耦合系统力学重点实验室
Affiliation1.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.
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.
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