Scour-induced unloading effects on lateral response of large-diameter monopiles in dense sand
文献类型：期刊论文
| 作者 | Li B(李彪)2,3; Qi WG(漆文刚)2,3 ; Wang. Yifa1; Gao FP(高福平)2,3; Wang SY(王顺意)2,3
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| 刊名 | COMPUTERS AND GEOTECHNICS
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| 出版日期 | 2024-10-01 |
| 卷号 | 174页码:14 |
| 关键词 | Monopile Lateral response Scour Sandy seabed Modified Mohr-Coulomb model |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106635 |
| 通讯作者 | Wen-Gang, Qi(qiwengang@imech.ac.cn) |
| 英文摘要 | Scour significantly influences the lateral response of pile foundations; however, there is a lack of comprehensive understanding regarding the scour effects on the lateral pile-soil interactions. This study employs finite element analysis to investigate the scour-induced unloading effect on the lateral response of large-diameter monopiles embedded in dense sand. This unloading effect results in stress redistribution within the soil, consequently altering the strength and stiffness, and influencing the resistance to failure and deformation of pile foundations. To effectively characterize this scour-induced stress redistribution, a cone penetrometer-based approach is utilized, which correlates Young's modulus of the sand with the cone penetration resistance. A modified Mohr-Coulomb model that considers effects of updated geostatic stress on the stress-strain behavior of dense sand is adopted in the FE analysis. Scour can lead to a reduction in the strength and stiffness of shallow layers of the remaining soil. The stress concentration induced around the pile base due to post-scour geostress reequilibrium can affect the lateral response of the pile. Furthermore, the effect of scour hole slope angle on the lateral response of pile foundations is quantified through the approach of effective soil depth. Finally, the formulas for evaluating scour effect on p-y curves are refined to extend its applications to arbitray slope angles of the scour hole by incorporating the present numerical results. |
| 分类号 | 一类 |
| WOS关键词 | P-Y CURVES ; LOADED PILES |
| 资助项目 | National Natural Science Foundation of China[11972036] ; Youth Innovation Promotion Association CAS[2021018] ; State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME022003] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001287467500001 |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences |
| 其他责任者 | Wen-Gang, Qi |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96271]  |
| 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 Melbourne, Fac Engn & Informat Technol, Dept Infrastructure Engn, Melbourne, Australia 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li B,Qi WG,Wang. Yifa,et al. Scour-induced unloading effects on lateral response of large-diameter monopiles in dense sand[J]. COMPUTERS AND GEOTECHNICS,2024,174:14. |
| APA | 李彪,漆文刚,Wang. Yifa,高福平,&王顺意.(2024).Scour-induced unloading effects on lateral response of large-diameter monopiles in dense sand.COMPUTERS AND GEOTECHNICS,174,14. |
| MLA | 李彪,et al."Scour-induced unloading effects on lateral response of large-diameter monopiles in dense sand".COMPUTERS AND GEOTECHNICS 174(2024):14. |
入库方式： OAI收割
来源：力学研究所
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