A coupled strain softening and hardening model for completely weathered granite in a fault zone
文献类型：期刊论文
| 作者 | Du Shaohua4; Xiao Peng3; Li Diyuan2; Mao Dawei6; Ruan Bo5; Zhang Ruichao1 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2024 |
| 卷号 | 31期号:9页码:3225 |
| 关键词 | 全风化花岗岩 力学行为 固结排水三轴试验 本构模型 completely weathered granite mechanical behavior consolidated drained triaxial test constitutive model |
| ISSN号 | 2095-2899 |
| 英文摘要 | This study focused on exploring the specificity of mechanical behavior for completely weathered granite, as a special soil, by consolidated drained triaxial tests. The influences of dry density (1.60, 1.70, 1.80 and 1.90 g/cm3), confining pressure (100, 200, 400 and 600 kPa), and moisture content (13.0%, that is, natural moisture content) were investigated in the present work. A newly developed Duncan-Chang model was established based on the experimental data and Duncan-Chang model. The influence of each parameter on the type of the proposed model curve was also evaluated. The experimental results revealed that with varying dry density and confining pressure, the deviatoric stress- strain curves have diversified characteristics including strain-softening, strain-stabilization and strain-hardening. Under high confining pressure condition, specimens with different densities all showed strain-hardening characteristic. Whereas at the low confining pressure levels, specimens with higher densities gradually transform into softening characteristics. Except for individual compression shear failure, the deformation modes of the specimens all showed swelling deformation, and all the damaged specimens maintained good integrity. Through comparing the experiment results, the strain-softening or strain-hardening behavior of CWG specimens could be predicted following the proposed model with high accuracy. Additionally, the proposed model can accurately characterize the key mechanical indicators, such as tangent modulus, peak value and residual strength, which is simple to implement and depends on fewer parameters. |
| 语种 | 英语 |
| WOS记录号 | WOS:001352949700003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37958]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Central China Branch of China Power Construction New Energy Group Corporation Limited 2.School of Resources and Safety Engineering,Central South University 3.中国科学院武汉岩土力学研究所 4.马来西亚理科大学 5.School of Civil Engineering,Central South University 6.PowerChina Zhongnan Engineering Corporation Limited |
| 推荐引用方式 GB/T 7714 | Du Shaohua,Xiao Peng,Li Diyuan,et al. A coupled strain softening and hardening model for completely weathered granite in a fault zone[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2024,31(9):3225. |
| APA | Du Shaohua,Xiao Peng,Li Diyuan,Mao Dawei,Ruan Bo,&Zhang Ruichao.(2024).A coupled strain softening and hardening model for completely weathered granite in a fault zone.JOURNAL OF CENTRAL SOUTH UNIVERSITY,31(9),3225. |
| MLA | Du Shaohua,et al."A coupled strain softening and hardening model for completely weathered granite in a fault zone".JOURNAL OF CENTRAL SOUTH UNIVERSITY 31.9(2024):3225. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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