Experimental study on the effect of unloading rate on monotonic and cyclic behavior of fissured clay
文献类型：期刊论文
| 作者 | Gao, Zhiao4,5; Kong, Lingwei4,5; Li, Xinming3; Wang, Shuangjiao2,4; Deng, Jiacheng1 |
| 刊名 | TRANSPORTATION GEOTECHNICS
 |
| 出版日期 | 2025 |
| 卷号 | 50页码:15 |
| 关键词 | Fissured clay Undisturbed soil Remolded soil Monotonic and cyclic load Unloading rate |
| ISSN号 | 2214-3912 |
| DOI | 10.1016/j.trgeo.2024.101477 |
| 英文摘要 | Variations in excavation construction periods for fissured soil transportation engineering lead to differing unloading rates, which affect the soil's mechanical properties. This study utilizes a triaxial testing system to conduct monotonic and cyclic loading undrained shear tests on undisturbed fissured samples as well as remolded samples subjected to three distinct unloading rates. The K0 consolidated samples are regarded as soil mass that undergoes no unloading during testing. The findings indicated that the initial unloading rate influences the reloading shear mechanical properties of undisturbed and remolded specimens. The effects of unloading rates differ between undisturbed and remolded soil, a discrepancy attributed to inherent fissures. Specifically, undisturbed soil exhibits significant damage at low unloading rates due to fissures, while remolded soil experiences strength augmentation due to compaction with decreased unloading rates. Similarly, unloading will cause a loss of strength. Structural disparities result in the monotonic loading strength of undisturbed specimens being higher than that of remolded ones. In contrast, remolded specimens demonstrate greater dynamic strength under cyclic loading, likely because fissures deform, diminishing overall dynamic strength. Subsequent microscopic analysis, utilizing SEM images, along with a discussion of macroscopic inherent fissures, elucidated the impact of unloading rate on soil damage mechanisms, advancing the understanding of fissured soil behavior post- unloading. The study of mechanical properties of fissured soil following varying unloading rates is crucial for comprehending its damage mechanism and determining post-unloading soil strength parameters, providing valuable insights for practical applications in soil engineering. |
| 资助项目 | Na-tional Key Research and Development Program of China[2019YFC1509901] ; Henan Outstanding Youth Science Foundation[242300421153] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001402222100001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37312]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Kong, Lingwei |
| 作者单位 | 1.Anhui Agr Univ, Sch Forestry & Landscape Architecture, Hefei 230036, Peoples R China 2.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Zhongyuan Univ Technol, Sch Civil Engn & Architecture, Zhengzhou 450007, Henan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Zhiao,Kong, Lingwei,Li, Xinming,et al. Experimental study on the effect of unloading rate on monotonic and cyclic behavior of fissured clay[J]. TRANSPORTATION GEOTECHNICS,2025,50:15. |
| APA | Gao, Zhiao,Kong, Lingwei,Li, Xinming,Wang, Shuangjiao,&Deng, Jiacheng.(2025).Experimental study on the effect of unloading rate on monotonic and cyclic behavior of fissured clay.TRANSPORTATION GEOTECHNICS,50,15. |
| MLA | Gao, Zhiao,et al."Experimental study on the effect of unloading rate on monotonic and cyclic behavior of fissured clay".TRANSPORTATION GEOTECHNICS 50(2025):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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