Micromechanical analysis of pipeline-soil interaction in unsaturated granular soil undergoing lateral ground movement
文献类型：期刊论文
| 作者 | Peng, Yu3; Yin, ZhenYu3; Gao FP(高福平)1,2
|
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 169页码:18 |
| 关键词 | Micromechanics Granular soils Pipeline -soil interaction Discrete element method Finite element method Progressive failure |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106181 |
| 通讯作者 | Yin, Zhen-Yu(zhenyu.yin@polyu.edu.hk) |
| 英文摘要 | The micro- to macro-scale pipeline-soil interaction mechanism in unsaturated granular soil remains unclear. This study investigates the unsaturated suction effect on the pipeline-soil interaction undergoing lateral ground movement using coupled discrete element method and finite element method (DEM-FEM) simulations. The Johnson-Kendall-Roberts (JKR) adhesive model was used to simulate the interparticle suction while the pipe segment was simulated with finite element meshes. The findings reveal that discontinuity and large deformation occurrences in unsaturated sandy soil in model tests can be successfully modelled by the DEM-FEM method. Besides, the interparticle suction effects on contact forces, particle collision behaviours, and special soil pressure distributions near the pipeline-soil interfaces were discovered and successfully explained. Additionally, progressive soil deformation and failure behaviours in dry and unsaturated soils were compared while the partial similarity between the suction effect and buried depth effect on pipeline-soil interaction was discussed. Finally, several conclusive pipeline-soil interaction failure patterns in different interparticle-suction conditions were identified after analysing a series of particle-scale behaviours including particle trajectories, particle contacts, and particle rotation distributions. The study indicated that neglecting the unsaturated effect can result in severely underestimating the intensity of pipeline-soil interaction and misjudging the soil failure patterns. |
| 分类号 | 一类 |
| WOS关键词 | CONSTITUTIVE MODEL ; BURIED PIPELINES ; DEM ; CALIBRATION ; BEHAVIOR ; DISPLACEMENT ; SIMULATION ; FORCE ; PARAMETERS ; RESISTANCE |
| 资助项目 | Research Grants Council (RGC) of Hong Kong Special Administrative Region Government (HKSARG) of China[N_PolyU534/20] ; National Natural Science Foundation of China[12061160463] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001194042100001 |
| 资助机构 | Research Grants Council (RGC) of Hong Kong Special Administrative Region Government (HKSARG) of China ; National Natural Science Foundation of China |
| 其他责任者 | Yin, Zhen-Yu |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94890]  |
| 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, Beijing 100190, Peoples R China; 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Peng, Yu,Yin, ZhenYu,Gao FP. Micromechanical analysis of pipeline-soil interaction in unsaturated granular soil undergoing lateral ground movement[J]. COMPUTERS AND GEOTECHNICS,2024,169:18. |
| APA | Peng, Yu,Yin, ZhenYu,&高福平.(2024).Micromechanical analysis of pipeline-soil interaction in unsaturated granular soil undergoing lateral ground movement.COMPUTERS AND GEOTECHNICS,169,18. |
| MLA | Peng, Yu,et al."Micromechanical analysis of pipeline-soil interaction in unsaturated granular soil undergoing lateral ground movement".COMPUTERS AND GEOTECHNICS 169(2024):18. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。