Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline

doi:10.1080/1064119X.2019.1689588

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 H 1; Wang SQ 1; Chen XG 1; Hu C(胡存)2 ; Liu JZ 3
通讯作者	Wang, Shuqing(shuqing@ouc.edu.cn)
发表期刊	MARINE GEORESOURCES & GEOTECHNOLOGY
	2019-11-13
页码	12
ISSN	1064-119X
摘要	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.
关键词	Pipeline liquefaction depth scour depth pore pressure response anisotropic seabed
DOI	10.1080/1064119X.2019.1689588
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000496379800001
关键词[WOS]	INDUCED PORE PRESSURES ; CIRCULAR-CYLINDER ; FLOW ; INSTABILITY ; GENERATION ; MECHANISM ; MODEL
WOS研究方向	Engineering ; Oceanography ; Mining & Mineral Processing
WOS类目	Engineering, Ocean ; Engineering, Geological ; Oceanography ; Mining & Mineral Processing
资助项目	National Science Fund for Distinguished Young Scholars[51625902] ; Taishan Scholars Program of Shandong Province[TS201511016] ; Taishan Scholars Program of Shandong Province[2016QNRC001]
项目资助者	National Science Fund for Distinguished Young Scholars ; Taishan Scholars Program of Shandong Province
论文分区	Q3
力学所作者排名	4
RpAuthor	Wang, Shuqing
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/311007/81404
专题	流固耦合系统力学重点实验室
作者单位	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
推荐引用方式 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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