Characterization of spatio-temporal distributions of wave-induced pore pressure in a non-cohesive seabed: Amplitude-attenuation and phase-lag

doi:10.1016/j.oceaneng.2022.111315

IMECH-IR > 流固耦合系统力学重点实验室

	Characterization of spatio-temporal distributions of wave-induced pore pressure in a non-cohesive seabed: Amplitude-attenuation and phase-lag
	Li CF(李畅飞)1,2; Gao FP(高福平)1,2
通讯作者	Gao, Fu-Ping(fpgao@imech.ac.cn)
发表期刊	OCEAN ENGINEERING
	2022-06-01
卷号	253 页码:14
ISSN	0029-8018
摘要	While ocean waves propagating over a porous seabed, the amplitude of excess pore pressure would attenuate into the seabed (termed as "amplitude-attenuation "), which is always accompanied by "phase-lag ". In this study, the amplitude-attenuation and the phase-lag phenomena in a fine-sand bed and a medium-sand bed were physically modeled in a large wave flume. A relative rigidity of soil-skeleton to pore-fluid is introduced to evaluate the seabed compressibility. Explicit expressions of the amplitude-attenuation and the phase-lag are derived and then validated with the experimental results. Parametric analyses indicate that, for the relative rigidity of the seabed much larger than 1.0, the amplitude-attenuation and the phase-lag along the non-dimensional soil depth would become more significant for larger wave period, but for smaller values of the combined rigidity-permeability parameter of the soil. A non-dimensional parameter (I-c) is further derived to characterize the combined effects of wave parameters and soil properties. Simplified spatio-temporal correlation of transient pore pressure is finally established for I-c >> 1.0, indicating the more rapidly the pore pressure amplitude attenuates within the seabed, the more significant the phase-lag becomes, correspondingly.
关键词	Flume observations Analytical solution Wave-induced pore pressure Amplitude attenuation Phase lag
DOI	10.1016/j.oceaneng.2022.111315
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000798184100002
关键词[WOS]	INDUCED SOIL RESPONSE ; HYDRAULIC CONDUCTIVITY ; LIQUEFIED SOIL ; LIQUEFACTION ; STRESSES ; BED
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China[11825205] ; National Natural Science Foundation of China[12061160463] ; Strategic Priority Research Program (Type-B) of Chinese Academy of Sciences[XDB22030000]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program (Type-B) of Chinese Academy of Sciences
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：7[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/311007/89580
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	Li CF,Gao FP. Characterization of spatio-temporal distributions of wave-induced pore pressure in a non-cohesive seabed: Amplitude-attenuation and phase-lag[J]. OCEAN ENGINEERING,2022,253:14.
APA	李畅飞,&高福平.(2022).Characterization of spatio-temporal distributions of wave-induced pore pressure in a non-cohesive seabed: Amplitude-attenuation and phase-lag.OCEAN ENGINEERING,253,14.
MLA	李畅飞,et al."Characterization of spatio-temporal distributions of wave-induced pore pressure in a non-cohesive seabed: Amplitude-attenuation and phase-lag".OCEAN ENGINEERING 253(2022):14.

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