Numerical study on the swelling and failure of red-layer mudstone subgrade caused by humidity diffusion
文献类型：期刊论文
| 作者 | Huang, Kang2,3; Dai, Zhangjun2; Yan, Chengzeng1,4; Chen, Shanxiong2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 156期号:-页码:- |
| ISSN号 | 0266-352X |
| 关键词 | Red -layer mudstone subgrade Humidity diffusion FDEM Swelling deformation failure |
| 英文摘要 | Red-layer mudstone is a typical soft rock with low strength, easy weathering and disintegration, and significant swelling. This is an important reason for the swelling, deformation, and failure of red-layer mudstone subgrades. In this study, a humidity diffusion-deformation-fracture coupling model based on the finite discrete element method (FDEM) is used to simulate the process of moisture absorption swelling deformation and failure of the red-layer mudstone subgrade. First, two examples with analytical solutions are used to verify the accuracy of the model in addressing the humidity diffusion and swelling stress problems. Subsequently, the influence of multiple factors on the moisture absorption swelling deformation and failure of the red-layer mudstone subgrade is simulated. The results show that shear cracks mainly occur during the moisture absorption swelling of the red -layer mudstone. With an increase in the number of crack zones, the swelling coefficient and initial moisture content of the crack zones, average swelling deformation, and total number of cracks on the mudstone subgrade surface increased. Simultaneously, the fluctuation of the swelling deformation of the subgrade surface is posi-tively correlated with the average moisture content and total number of cracks in the mudstone layer. In addition, the degree of influence of these factors on the swelling deformation and failure of the red-layer sub-grade is also discussed. The numerical calculation results are conducive to a better understanding of the mechanism of moisture absorption swelling and failure of red-layer mudstone subgrades. |
| 学科主题 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000923787400001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35209]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Faculty of Engineering, China University of Geosciences, Wuhan, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.University of Chinese Academy of Sciences, Beijing 100049, China 4.International Joint Research Center for Deep Earth Drilling and Resource Development, China University of Geosciences, Wuhan 430074, China |
| 推荐引用方式 GB/T 7714 | Huang, Kang,Dai, Zhangjun,Yan, Chengzeng,et al. Numerical study on the swelling and failure of red-layer mudstone subgrade caused by humidity diffusion[J]. COMPUTERS AND GEOTECHNICS,2023,156(-):-. |
| APA | Huang, Kang,Dai, Zhangjun,Yan, Chengzeng,&Chen, Shanxiong.(2023).Numerical study on the swelling and failure of red-layer mudstone subgrade caused by humidity diffusion.COMPUTERS AND GEOTECHNICS,156(-),-. |
| MLA | Huang, Kang,et al."Numerical study on the swelling and failure of red-layer mudstone subgrade caused by humidity diffusion".COMPUTERS AND GEOTECHNICS 156.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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