Swelling pressure evolution characterization of strong expansive soil considering the influence of reserved expansion deformation
文献类型：期刊论文
| 作者 | Li, Tianguo1,2; Kong, Lingwei1,2; Guo, Aiguo1,2; Yan, Junbiao1,2 |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2024 |
| 卷号 | 21期号:1页码:252-270 |
| 关键词 | Expansive soil Swelling pressure Reserved expansion deformation Water content |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-023-7897-9 |
| 英文摘要 | Numerous engineering cases have demonstrated that the expansive soil channel slope remains susceptible to damage with the implementation of a rigid or closed protective structure. It is common for the protective structure to experience bulging failure due to excessive swelling pressure. To investigate the swelling pressure properties of expansive soil, the constant volume test was employed to study the influence of water content and reserved expansion deformation on the characteristics of swelling pressure in strong expansive soils, and also to explore the evolution mechanism of the swelling pressure. The findings demonstrate that the swelling pressure-time curve can be classified into swelling pressure-time softening and swelling pressure-time stability type. The swelling pressure-time curve of the specimen with low water content is the swelling pressure-time softening type, and the softening level will be weakened with increasing reserved expansion deformation. Besides, the maximum swelling pressure Psmax decreases with increasing water content and reserved expansion deformation, especially for expansion ratio eta from 24% to 37%. The reserved deformation has little effect on reducing Psmax when it is beyond 7% of the expansion rate. The specimen with low water content has a more homogeneous structure due to the significant expansion-filling effect, and the fracture and reorganization of the aggregates in the specimens with low water content cause the swelling pressure-time softening behavior. In addition, the proposed swelling pressure-time curve prediction model has a good prediction on the test results. If necessary, a deformation space of about 7% expansion rate is recommended to be reserved in the engineering to reduce the swelling pressure except for keeping a stable water content. |
| 资助项目 | National Key R&D Program of China[2019YFC1509901] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001152428500007 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40571]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yan, Junbiao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Tianguo,Kong, Lingwei,Guo, Aiguo,et al. Swelling pressure evolution characterization of strong expansive soil considering the influence of reserved expansion deformation[J]. JOURNAL OF MOUNTAIN SCIENCE,2024,21(1):252-270. |
| APA | Li, Tianguo,Kong, Lingwei,Guo, Aiguo,&Yan, Junbiao.(2024).Swelling pressure evolution characterization of strong expansive soil considering the influence of reserved expansion deformation.JOURNAL OF MOUNTAIN SCIENCE,21(1),252-270. |
| MLA | Li, Tianguo,et al."Swelling pressure evolution characterization of strong expansive soil considering the influence of reserved expansion deformation".JOURNAL OF MOUNTAIN SCIENCE 21.1(2024):252-270. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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