Equilibrium scour depth at offshore monopile foundation in combined waves and current

IMECH-IR > 流固耦合系统力学重点实验室

	Equilibrium scour depth at offshore monopile foundation in combined waves and current
	Qi WG(漆文刚); Gao FP(高福平); Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
发表期刊	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
	2014-05
卷号	57 期号:5 页码:1030-1039
ISSN	1674-7321
摘要	Unlike the pier scour in bridge waterways, the local scour at offshore monopile foundations should take into account the effect of wave-current combination. Under the condition of wave-current coexistence, the water-soil interfacial scouring is usually coupled with the pore-pressure dynamics inside of the seabed. The aforementioned wave/current-pile-soil coupling process was physically modeled with a specially designed flow-structure-soil interaction flume. Experimental results indicate that superimposing a current onto the waves obviously changes the pore-pressure and the flow velocity at the bed around the pile. The concomitance of horseshoe vortex and local scour hole around a monopile proves that the horseshoe vortex is one of the main controlling mechanisms for scouring development under the combined waves and current. Based on similarity analyses, an average-velocity based Froude number (Fr (a)) is proposed to correlate with the equilibrium scour depth (S/D) at offshore monopile foundation in the combined waves and current. An empirical expression for the correlation between S/D and Fr (a) is given for predicting equilibrium scour depth, which may provide a guide for offshore engineering practice.
关键词	Monopile Pore-pressure Scour Depth Combined Waves And Current Froude Number
学科领域	Engineering ; Materials Science
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000335903500021
项目资助者	This work was supported by the National Natural Science Foundation of China (Grant Nos. 11232012, 10872198) and the National Basic Research Program of China ("973" Project) (Grant No. 2014CB046204).
课题组名称	LMFS流固土耦合力学(LHO)
论文分区	二类/Q2
引用统计	被引频次：62[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/311007/48863
专题	流固耦合系统力学重点实验室
通讯作者	Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Qi WG,Gao FP,Gao, FP . Equilibrium scour depth at offshore monopile foundation in combined waves and current[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2014,57,5,:1030-1039.
APA	漆文刚,高福平,&Gao, FP .(2014).Equilibrium scour depth at offshore monopile foundation in combined waves and current.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,57(5),1030-1039.
MLA	漆文刚,et al."Equilibrium scour depth at offshore monopile foundation in combined waves and current".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 57.5(2014):1030-1039.

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