Characterization of spatio-temporal distributions of wave-induced pore pressure in a non-cohesive seabed: Amplitude-attenuation and phase-lag
文献类型：期刊论文
| 作者 | Li, Chang-Fei1,2; Gao, Fu-Ping1,2 ; Gao FP(高福平)
|
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 253页码:14 |
| 关键词 | Flume observations Analytical solution Wave-induced pore pressure Amplitude attenuation Phase lag |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2022.111315 |
| 通讯作者 | Gao, Fu-Ping(fpgao@imech.ac.cn) |
| 英文摘要 | 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. |
| WOS关键词 | INDUCED SOIL RESPONSE ; HYDRAULIC CONDUCTIVITY ; LIQUEFIED SOIL ; LIQUEFACTION ; STRESSES ; BED |
| 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] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000798184100002 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program (Type-B) of Chinese Academy of Sciences |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89579]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Gao, Fu-Ping |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chang-Fei,Gao, Fu-Ping,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 | Li, Chang-Fei,Gao, Fu-Ping,&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 | Li, Chang-Fei,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. |
入库方式： OAI收割
来源：力学研究所
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