The Effect of Unloading Path on the Time-Dependent Behavior of Beishan Granite
文献类型：期刊论文
| 作者 | Yu, Peiyang; Pan, Peng-Zhi; Feng, Guangliang; Wang, Zhaofeng; Miao, Shuting |
| 刊名 | LITHOSPHERE
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 2022 |
| ISSN号 | 1941-8264 |
| 英文摘要 | Understanding the time-dependent characteristics of Beishan granite after excavation is critically important for the long-term stability and disaster control of the high-level radioactive waste repository. In this context, a series of creep tests under different unloading paths are designed to simulate the time-dependent behavior of rock mass after excavation. Results show that the instantaneous volume deformation under each loading step is greatly influenced by the unloading path. Moreover, the unloading path has minor effects on the creep strain. The axial and lateral creep strain is dominated by creep fracture potential, which can be characterized by a unified time-dependent fracture potential index TFPI (xi(TFPI)) for different stress states. It is observed that the creep strain generally increases with increasing xi(TFPI) . In order to describe the fracture mechanism during the creep process, a damage mechanical model based on time-dependent subcritical crack growth theory is adopted. It reveals that the strain hardening behavior dominates the granite creep process, and the strain softening effect is gradually strengthened with increasing xi(TFPI). |
| 学科主题 | Geochemistry & Geophysics ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000855685500007 |
| 出版者 | GEOSCIENCEWORLD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34728]  |
| 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 | Yu, Peiyang,Pan, Peng-Zhi,Feng, Guangliang,et al. The Effect of Unloading Path on the Time-Dependent Behavior of Beishan Granite[J]. LITHOSPHERE,2022,2022. |
| APA | Yu, Peiyang,Pan, Peng-Zhi,Feng, Guangliang,Wang, Zhaofeng,&Miao, Shuting.(2022).The Effect of Unloading Path on the Time-Dependent Behavior of Beishan Granite.LITHOSPHERE,2022. |
| MLA | Yu, Peiyang,et al."The Effect of Unloading Path on the Time-Dependent Behavior of Beishan Granite".LITHOSPHERE 2022(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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