Determination of damage evolution characteristics in granite residual soil shear bands by micro-CT-based advanced digital volume correlation
文献类型：期刊论文
| 作者 | Li, Chengsheng1,2; Kong, Lingwei1; Zhang, Bingxin2; Liu, Zhijun2; Shu, Rongjun3; Li, Tianguo1 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 333页码:17 |
| 关键词 | Damage Crack Shear band Digital volume correlation Micro-CT |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2024.107505 |
| 英文摘要 | Determining the evolution characteristics of cracks and shear bands is important for understanding the damage mechanisms of geotechnical materials. However, there are few experimental studies on the mesoscopic evolution characteristics of cracks in shear bands. In this study, micro -chromatography (micro -CT) is used to evaluate the triaxial test processes of granite residual soil samples under confining pressures of 50 kPa, 100 kPa, 200 kPa and 300 kPa. Then, advanced digital volume correlation (DVC) is used to obtain three-dimensional strain fields and shear bands at different test loading stages, the evolution characteristics of cracks inside and outside the shear band are further measured basis on this. The results indicate that, if the maximum gradient region of the crack distribution in the initial state of the sample can form a trend surface similar to the " interface " , then the shear band may be generated in this region. After the formation of the shear band, the penetration degrees of the shear bands are similar to an S curve with the increasing axial strain. The crack volume densities of the shear bands are obviously smaller than those of whole specimens. The crack volume densities on the shear bands first decrease rapidly and then increase gradually with increasing axial strain, and the increasing rate decreases with increasing confining pressure. Among the various crack types on the shear bands, the volume contents of brand-new cracks increase the fastest and exceed half, indirectly reflecting the severe deformation characteristics on the shear bands. |
| 资助项目 | Building Fund for the Academic Innovation Team of Shantou University[NTF21017] ; Special Fund for Science and Technology of Guangdong Province[STKJ2021181] ; National Natural Science Foundation of China[12272394] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001230028400001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41410]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Chengsheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China 2.Shantou Univ, Dept Civil Engn & Smart Cities, Shantou 515000, Guangdong, Peoples R China 3.Chuzhou Univ, Coll Civil & Architecture Engn, Chuzhou 239000, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chengsheng,Kong, Lingwei,Zhang, Bingxin,et al. Determination of damage evolution characteristics in granite residual soil shear bands by micro-CT-based advanced digital volume correlation[J]. ENGINEERING GEOLOGY,2024,333:17. |
| APA | Li, Chengsheng,Kong, Lingwei,Zhang, Bingxin,Liu, Zhijun,Shu, Rongjun,&Li, Tianguo.(2024).Determination of damage evolution characteristics in granite residual soil shear bands by micro-CT-based advanced digital volume correlation.ENGINEERING GEOLOGY,333,17. |
| MLA | Li, Chengsheng,et al."Determination of damage evolution characteristics in granite residual soil shear bands by micro-CT-based advanced digital volume correlation".ENGINEERING GEOLOGY 333(2024):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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