Evolution law of small strain shear modulus of expansive soil: From a damage perspective
文献类型：期刊论文
| 作者 | Yan, Junbiao; Kong, Lingwei; Wang, Juntao |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2023-03-20 |
| 卷号 | 315 |
| 关键词 | Expansive soil Small strain shear modulus Damage model Resonance column test Soil dynamics |
| ISSN号 | 0013-7952 |
| 英文摘要 | It is of great significance to study the nonlinear evolution law of the small strain shear modulus of expansive soil for analyzing the deformation behavior of soil or geotechnical structure and the seismic site response. Existing studies rarely discuss the damage mechanism of the small strain shear modulus of expansive soil, and the cor-responding damage model describing the small strain stiffness decay law is lacking. In this study, a series of resonance column tests were carried out to investigate the effects of mean effective stress, loading and unloading stress paths and vibration cycles on the nonlinear decay law of small strain shear modulus of expansive soil, and the damage mechanism was discussed in detail. Subsequently, a novel damage model describing the decay law of small strain shear modulus of expansive soil was proposed and verified by the results of resonant column tests. The results show that the decay process of the small strain shear modulus with the shear strain is essentially the damage of the soil structure, which can be characterized mathematically by damage model. The mean effective stress and the larger overconsolidation ratio caused by the unloading process can inhibit the damage, while the vibration cycles can cause small reduction in small strain shear modulus and promote the damage. The proposed damage model with clear physical meaning can well describe the evolution law of small strain shear modulus of expansive soil, and has higher accuracy than the traditional model. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000925437700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34795]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Yan, Junbiao,Kong, Lingwei,Wang, Juntao. Evolution law of small strain shear modulus of expansive soil: From a damage perspective[J]. ENGINEERING GEOLOGY,2023,315. |
| APA | Yan, Junbiao,Kong, Lingwei,&Wang, Juntao.(2023).Evolution law of small strain shear modulus of expansive soil: From a damage perspective.ENGINEERING GEOLOGY,315. |
| MLA | Yan, Junbiao,et al."Evolution law of small strain shear modulus of expansive soil: From a damage perspective".ENGINEERING GEOLOGY 315(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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