Accumulated plastic deformation behavior of granite residual soil under cyclic loading considering the influence of initial unloading
文献类型：期刊论文
| 作者 | Shu, Rongjun1,2; Kong, Lingwei2,3; Li, Tianguo2; Jian, Tao2; Zhou, Zhenhua2,3 |
| 刊名 | TRANSPORTATION GEOTECHNICS
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 41期号:-页码:- |
| ISSN号 | 2214-3912 |
| 关键词 | Granite residual soil Accumulated plastic deformation Initial shearing Unloading Stress path Cyclic loading |
| 英文摘要 | In engineering practice, excavation near existing transport infrastructures is inevitable due to space limitations. The effect of excavation-induced unloading on soil response to subsequent traffic loads is well worth studying, yet previous studies mainly focused on the effect of initial loading (rather than unloading). Undrained cyclic triaxial tests on undisturbed granite residual soil were conducted to study the effect of initial unloading on accumulated plastic deformation behavior. The unloading effect was achieved by reducing cell pressure before cyclic loading. The influences of amplitude of cyclic stress (sigma d) and degree of initial unloading (Di) on accu-mulated plastic deformation behavior were investigated. The results indicate that accumulating mode of axial plastic strain changes gradually from stabilization to failure as sigma d increases. Initial unloading has a significant promoting effect on the development of accumulated axial strain, and the promoting effect heightens with the increase in Di. Besides, a comparative study was conducted by employing another two stress paths, and it is found that initial shearing stress path makes a considerable difference to accumulated plastic deformation behavior. Under the same Di and sigma d, soil specimen experiencing initial unloading shows a poorer capacity for resisting cyclic deformation, compared to the other initial shearing stress paths. An empirical model was developed for predicting accumulated axial strain under the condition that initial unloading occurs prior to cyclic loading, considering the effects of amplitude of cyclic stress and degree of initial unloading. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000991765300001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35197]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.College of Civil and Architecture Engineering, Chuzhou University, Chuzhou 239000, Anhui, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Shu, Rongjun,Kong, Lingwei,Li, Tianguo,et al. Accumulated plastic deformation behavior of granite residual soil under cyclic loading considering the influence of initial unloading[J]. TRANSPORTATION GEOTECHNICS,2023,41(-):-. |
| APA | Shu, Rongjun,Kong, Lingwei,Li, Tianguo,Jian, Tao,&Zhou, Zhenhua.(2023).Accumulated plastic deformation behavior of granite residual soil under cyclic loading considering the influence of initial unloading.TRANSPORTATION GEOTECHNICS,41(-),-. |
| MLA | Shu, Rongjun,et al."Accumulated plastic deformation behavior of granite residual soil under cyclic loading considering the influence of initial unloading".TRANSPORTATION GEOTECHNICS 41.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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