Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models

doi:10.1016/j.coastaleng.2019.02.006

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Combined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models
	Qi WG(漆文刚)2,3 ; Li CF(李畅飞)2,3; Jeng DS 1; Gao FP(高福平)2,3 ; Liang ZD 1
刊名	COASTAL ENGINEERING
	2019-05-01
卷号	147 页码:89-98
关键词	Excess pore-pressure Flume experiment Sandy seabed Combined waves and current Boundary layer Wave-current interactions
ISSN号	0378-3839
DOI	10.1016/j.coastaleng.2019.02.006
通讯作者	Gao, Fu-Ping(fpgao@imech.ac.cn)
英文摘要	Waves 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.
分类号	一类
资助项目	National 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
WOS关键词	INDUCED SOIL RESPONSE ; TURBULENT CURRENT ; LIQUEFACTION ; BREAKWATER ; STRESSES ; FOUNDATION ; MONOPILE ; BED
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000463123800008
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program (Type-B) of CAS ; Youth Innovation Promotion Association CAS
其他责任者	Gao, Fu-Ping
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78720]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Griffith Univ, Sch Engn & Built Environm, Gold Coast Campus, Southport, Qld 4222, Australia 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.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,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.