Response spectra for transient pore-pressure in a sandy seabed under random waves: Frequency-filtering effect
文献类型：期刊论文
| 作者 | Yu JH(于嘉豪); Gao FP(高福平) ; Li CF(李畅飞)
|
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2023-07 |
| 卷号 | 279页码:114490 |
| 关键词 | Random waves Transient pore-pressure Flume observation Amplitude-attenuation Frequency-filtering |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2023.114490 |
| 英文摘要 | The real state of ocean waves is random in nature with various monochromatic components. Transient pore pressures in a sandy seabed under the action of the random-waves with JONSWAP spectrum and the regular -waves were physically modeled, respectively. The surface elevations and the corresponding transient pore pressures in the fine-sand were measured simultaneously in a wave flume. The frequency-filtering phenomenon was observed by Fourier analysis for random-wave induced pore pressure responses. In the Fourier energy spectra, both a primary-peak (high-frequency) and a secondary-peak (low-frequency) were identified within the relatively shallow soil layer. But the primary-peak kept declining rapidly, meanwhile the secondary-peak attenuated much more slowly with increasing soil depth, which can eventually lead to a shift between the high-frequency peak and the low-frequency one. As a consequence, the upgraded primary-peak frequencies of the dual-peaked spectra at the deeper soil layer would become smaller than the original significant frequencies, indicating that the pore pressure induced by long-wave components is of vital significance there. Furthermore, a filtering-depth parameter is introduced to characterize the frequency-filtering effect. Given the pore pressure at a certain soil depth, the quantitative relationship between the primary-peak and the secondary-peak can be pre-dicted for an arbitrary soil depth. |
| 分类号 | 一类 |
| WOS研究方向 | WOS:000983510000001 |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China [11825205] |
| 其他责任者 | Gao, FP |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92221]  |
| 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.(Yu Jia-Hao, Gao Fu-Ping, Li Chang-Fei) Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China 2.(Yu Jia-Hao, Gao Fu-Ping, Li Chang-Fei) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu JH,Gao FP,Li CF. Response spectra for transient pore-pressure in a sandy seabed under random waves: Frequency-filtering effect[J]. OCEAN ENGINEERING,2023,279:114490. |
| APA | 于嘉豪,高福平,&李畅飞.(2023).Response spectra for transient pore-pressure in a sandy seabed under random waves: Frequency-filtering effect.OCEAN ENGINEERING,279,114490. |
| MLA | 于嘉豪,et al."Response spectra for transient pore-pressure in a sandy seabed under random waves: Frequency-filtering effect".OCEAN ENGINEERING 279(2023):114490. |
入库方式： OAI收割
来源：力学研究所
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