IMECH-IR  > 流固耦合系统力学重点实验室
Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models
Qi WG(漆文刚)1,2; Li CF(李畅飞)1,2; Jeng DS3; Gao FP(高福平)1,2; Liang ZD3
Corresponding AuthorGao, Fu-Ping(fpgao@imech.ac.cn)
Source PublicationCOASTAL ENGINEERING
2019-05-01
Volume147Pages:89-98
ISSN0378-3839
AbstractWaves are coexisting with currents in coastal zones; nevertheless, previous experimental studies for excess pore pressure responses in a porous seabed were predominantly limited to the wave-only condition. In this study, the combined wave-current induced excess pore-pressures in a sandy seabed were experimentally simulated with a specially-designed flume, which can concurrently generate periodic waves and a following/opposing co-directional current. The effect of a current on the wave profile is firstly examined. The wave steepness is decreased by a following current, but enhanced by an opposing current. Flume observations indicate that, under combined wave-current loading, the wave-induced pore-pressure is increased for the following-current case, but reduced for the opposing-current case. Such wave-current combination effect becomes more significant for shorter wave periods. The variation trend of the excess pore-pressure distribution in the present flume observations is consistent with that of the existing analytical solutions. Nevertheless, due to the existence of wave and/or current boundary layer and non-lineartiy of wave-current interactions as indicated by the flume observations, certain deviations exist between the flume results for excess pore-pressure and the analytical solutions, which can not be ignored especially for the opposing-current case. The effects of the boundary layer on the combined wave-current induced pore-pressures in the seabed are further highlighted by supplementary numerical simulations. A favorable prediction by the analytical solution would be expected for following-current cases and smaller pore pressure amplitudes would be obtained for opposing-current cases.
KeywordExcess pore-pressure Flume experiment Sandy seabed Combined waves and current Boundary layer Wave-current interactions
DOI10.1016/j.coastaleng.2019.02.006
Indexed BySCI ; EI
Language英语
WOS IDWOS:000463123800008
WOS KeywordINDUCED SOIL RESPONSE ; TURBULENT CURRENT ; LIQUEFACTION ; BREAKWATER ; STRESSES ; FOUNDATION ; MONOPILE ; BED
WOS Research AreaEngineering
WOS SubjectEngineering, Civil ; Engineering, Ocean
Funding ProjectNational Natural Science Foundation of China[11602273] ; National Natural Science Foundation of China[11825205] ; Strategic Priority Research Program (Type-B) of CAS[XDB22030000] ; Youth Innovation Promotion Association CAS
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program (Type-B) of CAS ; Youth Innovation Promotion Association CAS
Classification一类
Ranking1
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78721
Collection流固耦合系统力学重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Griffith Univ, Sch Engn & Built Environm, Gold Coast Campus, Southport, Qld 4222, Australia
Recommended Citation
GB/T 7714
Qi WG,Li CF,Jeng DS,et al. Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models[J]. COASTAL ENGINEERING,2019,147:89-98.
APA 漆文刚,李畅飞,Jeng DS,高福平,&Liang ZD.(2019).Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models.COASTAL ENGINEERING,147,89-98.
MLA 漆文刚,et al."Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models".COASTAL ENGINEERING 147(2019):89-98.
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