Creep Damage Characteristics and Fractional-Order Model of Weakly Cemented Soft Rock
文献类型：期刊论文
| 作者 | Liu, Jiashun1,2; Zhou, Ni2; Zhou, Hui1; Zheng, Zhiyong2; Zhang, Xuefeng2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2025-04-12 |
| 页码 | 21 |
| 关键词 | Weakly cemented soft rock Water-force coupling Damage variable Nonlinear damage viscoplastic element Creep damage model |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-025-04539-z |
| 英文摘要 | Weakly cemented soft rock (WCSR) is characterized by poor cementation, argillization (after encountering water), and strong rheology, which leads to the rheological deformation of the surrounding rock is led. To investigate the creep characteristics of WCSR under the action of different water contents (w), the multistage unloading confining pressure creep tests were conducted using the GDS HPTAS creep triaxial apparatus. According to the damage mechanics theory, the water damage variable Dw and the stress damage variable D sigma were defined, and the water-force coupling damage variable D was established. A novel water-force coupling damage variable D was introduced into the Abel dashpot constitutive equation based on the equivalent stress method, and a new nonlinear damage viscoplastic element was established. Subsequently, a four-element fractional-order creep damage model was constructed based on the fractional-order differential theory. By fitting the creep experimental data of soft rock under the action of different water contents, it is evident that the four-element fractional-order creep damage model possesses considerable advantages in characterizing the entire process of creep deformation in soft rock, and the model parameters are few and easy to obtain. The research results can provide a theoretical basis for predicting the creep deformation characteristics of WCSR under the action of different water contents and help prevent creep damage that leads to instability in surrounding rock underground roadway engineering. |
| 资助项目 | National Natural Science Foundation of China[52374091,52104088] ; National Natural Science Foundation of China[SKLGME022021] ; State Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan[2022M713383] ; China postdoctoral science foundation |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001465108800001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36342]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Jiashun |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn Safety, Wuhan 430071, Peoples R China 2.Liaoning Tech Univ, Sch Civil Engn, Fuxin 123000, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiashun,Zhou, Ni,Zhou, Hui,et al. Creep Damage Characteristics and Fractional-Order Model of Weakly Cemented Soft Rock[J]. ROCK MECHANICS AND ROCK ENGINEERING,2025:21. |
| APA | Liu, Jiashun,Zhou, Ni,Zhou, Hui,Zheng, Zhiyong,&Zhang, Xuefeng.(2025).Creep Damage Characteristics and Fractional-Order Model of Weakly Cemented Soft Rock.ROCK MECHANICS AND ROCK ENGINEERING,21. |
| MLA | Liu, Jiashun,et al."Creep Damage Characteristics and Fractional-Order Model of Weakly Cemented Soft Rock".ROCK MECHANICS AND ROCK ENGINEERING (2025):21. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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