Combined nonlinear wave and current induced instantaneously-liquefied soil depth in a non-cohesive seabed
文献类型：期刊论文
| 作者 | Yang LJ(杨鲤境)1,2; Gao FP(高福平)1,2 ; Li CF(李畅飞)1,2
|
| 刊名 | COASTAL ENGINEERING
 |
| 出版日期 | 2023 |
| 卷号 | 179页码:12 |
| 关键词 | Combined wave -current loading Pore pressure Non -cohesive seabed Instantaneous liquefaction Phase lag Analytical solution |
| ISSN号 | 0378-3839 |
| DOI | 10.1016/j.coastaleng.2022.104229 |
| 通讯作者 | Gao, Fu-Ping(fpgao@imech.ac.cn) |
| 英文摘要 | 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. |
| 分类号 | 一类 |
| WOS关键词 | INDUCED PORE PRESSURE ; SHORT GRAVITY WAVES ; INDUCED LIQUEFACTION ; EFFECTIVE STRESSES ; WATER-WAVES ; MONO-PILE ; SAND ; RESPONSES |
| 资助项目 | National Natural Science Foundation of China ; [11825205] ; [12061160463] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000878288700006 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Gao, Fu-Ping |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90744]  |
| 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.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 | 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. |
| 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. |
入库方式： OAI收割
来源：力学研究所
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