Combined nonlinear wave and current induced instantaneously-liquefied soil depth in a non-cohesive seabed

doi:10.1016/j.coastaleng.2022.104229

IMECH-IR > 流固耦合系统力学重点实验室

	Combined nonlinear wave and current induced instantaneously-liquefied soil depth in a non-cohesive seabed
	Yang LJ(杨鲤境)1,2; Gao FP(高福平)1,2 ; Li CF(李畅飞)1,2
通讯作者	Gao, Fu-Ping([email protected])
发表期刊	COASTAL ENGINEERING
	2023
卷号	179 页码:12
ISSN	0378-3839
摘要	Progressive waves usually coexist with a steady current in coastal environments. Superposing a following or opposite current onto the progressive waves could significantly alter the excess pore-water pressure distribution within the seabed. Unlike previous studies which were predominantly limited to the pure wave cases, the instantaneous liquefaction of a non-cohesive seabed is investigated analytically under the combined loading of 3rd order Stokes waves and a steady current. Explicit expressions are derived for the transient pore pressure distribution in a seabed with instantaneously-liquefied zone and the corresponding instantaneous liquefaction depth, which are verified by degradation analyses and comparisons with the existing offshore field observations. The phase lag of excess pore pressure is taken into account in the theoretical derivation. Parametric study is then performed to examine the effects of wave non-linearity and superimposing a current on the instantaneous liquefaction depth. It is indicated that wave-nonlinearity effects on the instantaneous liquefaction depth are not neglectable, especially when the wave height gets larger and the current velocity is reduced. The envelope for the variation of maximum instantaneous liquefaction depth with both wave period and current velocity is further constructed. To superimpose an opposing current onto the progressive waves with a relatively small wave period could be beneficial for the prevention of instantaneous liquefaction. Nevertheless, the variation trends of the maximum instantaneous liquefaction depth are attributed to the synthetical effect of the alternations of both wavelength and wave height during nonlinear wave-current interactions.
关键词	Combined wave -current loading Pore pressure Non -cohesive seabed Instantaneous liquefaction Phase lag Analytical solution
DOI	10.1016/j.coastaleng.2022.104229
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000878288700006
关键词[WOS]	INDUCED PORE PRESSURE ; SHORT GRAVITY WAVES ; INDUCED LIQUEFACTION ; EFFECTIVE STRESSES ; WATER-WAVES ; MONO-PILE ; SAND ; RESPONSES
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Ocean
资助项目	National Natural Science Foundation of China ; [11825205] ; [12061160463]
项目资助者	National Natural Science Foundation of China
论文分区	一类
力学所作者排名	1
RpAuthor	Gao, Fu-Ping
引用统计	被引频次：4[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/311007/90745
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang LJ,Gao FP,Li CF. Combined nonlinear wave and current induced instantaneously-liquefied soil depth in a non-cohesive seabed[J]. COASTAL ENGINEERING,2023,179:12.Rp_Au:Gao, Fu-Ping
APA	杨鲤境,高福平,&李畅飞.(2023).Combined nonlinear wave and current induced instantaneously-liquefied soil depth in a non-cohesive seabed.COASTAL ENGINEERING,179,12.
MLA	杨鲤境,et al."Combined nonlinear wave and current induced instantaneously-liquefied soil depth in a non-cohesive seabed".COASTAL ENGINEERING 179(2023):12.

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