Effect of particle size on direct shear deformation of soil
文献类型：期刊论文
| 作者 | Gu, Renguo; Fang, Yingguang; Jiang, Quan; Li, Bo; Feng, Deluan |
| 刊名 | GEOMECHANICS AND ENGINEERING
 |
| 出版日期 | 2022-01-25 |
| 卷号 | 28期号:2页码:135 |
| 关键词 | model granular shear strength size effect stress concentration |
| ISSN号 | 2005-307X |
| 英文摘要 | Soils are natural granular materials whose mechanical properties differ according to the size and composition of the particles, so soils exhibit an obvious scale effect. Traditional soil mechanics is based on continuum mechanics, which can not reflect the impact of particle size on soil mechanics. On that basis, a matrix-reinforcing-particle cell model is established in which the reinforcing particles are larger-diameter sand particles and the matrix comprises smaller-diameter bentonite particles. Since these two types of particles deform differently under shear stress, a new shear-strength theory under direct shear that considers the stress concentration and bypass phenomena of the matrix is established. In order to verify the rationality of this theory, a series of direct shear tests with different reinforcing particle diameter and volume fraction ratio are carried out. Theoretical analysis and experimental results showed that the interaction among particles of differing size and composition is the basic reason for the size effect of soils. Furthermore, the stress concentration and bypass phenomena of the matrix enhance the shear strength of a soil, and the volume ratio of reinforcing particles has an obvious impact on the shear strength. In addition, the newly proposed shear-strength theory agrees well with experimental values. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000792406900002 |
| 出版者 | TECHNO-PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35297]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.South China University of Technology; 2.Guangdong University of Technology 3.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; |
| 推荐引用方式 GB/T 7714 | Gu, Renguo,Fang, Yingguang,Jiang, Quan,et al. Effect of particle size on direct shear deformation of soil[J]. GEOMECHANICS AND ENGINEERING,2022,28(2):135. |
| APA | Gu, Renguo,Fang, Yingguang,Jiang, Quan,Li, Bo,&Feng, Deluan.(2022).Effect of particle size on direct shear deformation of soil.GEOMECHANICS AND ENGINEERING,28(2),135. |
| MLA | Gu, Renguo,et al."Effect of particle size on direct shear deformation of soil".GEOMECHANICS AND ENGINEERING 28.2(2022):135. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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