Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline
文献类型：期刊论文
| 作者 | Li H3; Wang SQ3; Chen XG3; Hu C(胡存)2 ; Liu JZ1
|
| 刊名 | MARINE GEORESOURCES & GEOTECHNOLOGY
 |
| 出版日期 | 2019-11-13 |
| 页码 | 12 |
| 关键词 | Pipeline liquefaction depth scour depth pore pressure response anisotropic seabed |
| ISSN号 | 1064-119X |
| DOI | 10.1080/1064119X.2019.1689588 |
| 通讯作者 | Wang, Shuqing(shuqing@ouc.edu.cn) |
| 英文摘要 | Wave-induced liquefaction depth is a key factor in providing the safe design of submarine pipelines. However, existing numerical studies simplify the seabed as a flat foundation and ignore the effect of scour depth on wave-induced seabed response and liquefaction depth. The effects of scour depth on wave-induced seabed response and liquefaction depth around a submarine pipeline are investigated, and a three-dimensional hybrid model combining Reynolds-averaged Navier-Stokes (RANS) equations with Biot's poroelastic theory for wave propagation and anisotropic seabed is proposed in this study. Numerical results indicate that local scour leads to the redistribution of the initial effective stress within the seabed around the pipeline. With increasing scour depths, the maximum liquefaction depth beneath the pipeline simultaneously decreases. When the scour depth reaches a certain depth, the seabed seems to no longer liquefy. Parametric studies indicate that the liquefaction depth increases by either decreasing the saturation degree or increasing the wave height. Under anisotropic seabed conditions, a nonlinear relationship exists between the maximum liquefaction depth of the seabed and the seabed permeability. |
| 分类号 | Q3 |
| WOS关键词 | INDUCED PORE PRESSURES ; CIRCULAR-CYLINDER ; FLOW ; INSTABILITY ; GENERATION ; MECHANISM ; MODEL |
| 资助项目 | National Science Fund for Distinguished Young Scholars[51625902] ; Taishan Scholars Program of Shandong Province[TS201511016] ; Taishan Scholars Program of Shandong Province[2016QNRC001] |
| WOS研究方向 | Engineering ; Oceanography ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000496379800001 |
| 资助机构 | National Science Fund for Distinguished Young Scholars ; Taishan Scholars Program of Shandong Province |
| 其他责任者 | Wang, Shuqing |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81403]  |
| 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.Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 3.Ocean Univ China, Shandong Prov Key Lab Ocean Engn, Qingdao 266100, Shandong, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li H,Wang SQ,Chen XG,et al. Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2019:12. |
| APA | Li H,Wang SQ,Chen XG,胡存,&Liu JZ.(2019).Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline.MARINE GEORESOURCES & GEOTECHNOLOGY,12. |
| MLA | Li H,et al."Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline".MARINE GEORESOURCES & GEOTECHNOLOGY (2019):12. |
入库方式： OAI收割
来源：力学研究所
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