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.
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
2014-05
Volume57Issue:5Pages:1030-1039
ISSN1674-7321
AbstractUnlike 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.
KeywordMonopile Pore-pressure Scour Depth Combined Waves And Current Froude Number
Subject AreaEngineering ; Materials Science
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000335903500021
Funding OrganizationThis 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).
DepartmentLMFS流固土耦合力学(LHO)
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48863
Collection流固耦合系统力学重点实验室
Corresponding AuthorGao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Recommended Citation
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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