Uplift soil resistance to a shallowly-buried pipeline in the sandy seabed under waves: Poro-elastoplastic modeling
文献类型：期刊论文
| 作者 | Qi WG(漆文刚)1,2 ; Shi YM(师玉敏)1,2; Gao FP(高福平)1,2
|
| 刊名 | APPLIED OCEAN RESEARCH
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 95页码:13 |
| 关键词 | Wave-seabed-pipeline interaction Poro-elastoplastic model Buried pipe Transient pore-pressure response Vertical soil resistance |
| ISSN号 | 0141-1187 |
| DOI | 10.1016/j.apor.2019.102024 |
| 通讯作者 | Gao, Fu-Ping(fpgao@imech.ac.cn) |
| 英文摘要 | A reasonable evaluation of the vertical soil resistance to a buried pipeline is crucial for upheaval buckling analyses. Under wave troughs, the effective stress in the seabed could be reduced significantly due to the upward seepage caused by vertical pore-pressure gradients. To investigate the influence of wave loading on the vertical soil resistance to a buried pipe, a plane-strain poro-elastoplastic model is proposed and verified with the existing pipe-soil interaction test results and DNV GL predictions. The model is capable of sequentially simulating the pore-pressure generation in a sandy seabed under waves and the plastic-zone development while uplifting the pipe. Numerical results show that the presence of wave troughs could not only reduce the soil effective stress, but also generate an additional uplift force on the buried pipe due to non-uniform distribution of pore-pressures along the pipe periphery. The normalized additional uplift force generally increases linearly with normalized amplitude of wave pressures at seabed mudline. Parametric study is then performed to examine the influence of wave parameters and soil properties. Moreover, to qualitatively characterize the effect of wave loading, a resistance-reduction coefficient is introduced and found to decrease linearly with the increase of normalized amplitude of wave pressure at seabed mudline. |
| 分类号 | 二类 |
| WOS关键词 | SUBMARINE PIPELINE ; NONLINEAR-WAVE ; LIQUEFIED SOIL ; LIQUEFACTION ; MECHANISMS ; PRESSURES ; PIPES ; FLOW |
| 资助项目 | National Natural Science Foundation of China[11825205] ; National Natural Science Foundation of China[11602273] ; 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:000513290200013 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program (Type-B) of Chinese Academy of Sciences |
| 其他责任者 | Gao, Fu-Ping |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81511]  |
| 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, Key Lab Mech Fluid Solid Coupling Syst, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Qi WG,Shi YM,Gao FP. Uplift soil resistance to a shallowly-buried pipeline in the sandy seabed under waves: Poro-elastoplastic modeling[J]. APPLIED OCEAN RESEARCH,2020,95:13. |
| APA | 漆文刚,师玉敏,&高福平.(2020).Uplift soil resistance to a shallowly-buried pipeline in the sandy seabed under waves: Poro-elastoplastic modeling.APPLIED OCEAN RESEARCH,95,13. |
| MLA | 漆文刚,et al."Uplift soil resistance to a shallowly-buried pipeline in the sandy seabed under waves: Poro-elastoplastic modeling".APPLIED OCEAN RESEARCH 95(2020):13. |
入库方式： OAI收割
来源：力学研究所
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