Mechanical Behavior and Failure Mechanism of Rock-Concrete Composites Under the Coupling Effect of Inclined Interface Angle and Ground Temperature
文献类型：期刊论文
| 作者 | Liu, Shiwei1,2; Zhao, Jiaxin2; Cheng, Fang2; Yu, Hao2; Chen, Jiaqi2 |
| 刊名 | SYMMETRY-BASEL
 |
| 出版日期 | 2025 |
| 卷号 | 17期号:1页码:18 |
| 关键词 | rock-concrete composite geothermal temperature inclined interface angle mechanical properties failure mechanism |
| DOI | 10.3390/sym17010052 |
| 英文摘要 | Surrounding rock and lining are composite structures with asymmetric mechanical properties. Understanding the mechanical properties and failure characteristics of rock-concrete composites is crucial for gaining insights into the mechanisms that induce disasters in deep-underground environments. Uniaxial compression and acoustic emission tests were conducted on rock-concrete composite specimens cured at temperatures of 20 degrees C, 40 degrees C, 60 degrees C, and 80 degrees C, with interface angles of 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees respectively. The results indicated that the specimens' strength decreased at increasing geothermal temperatures. The composites with an 80 degrees C curing temperature and a 60 degrees interface angle exhibited the lowest strength. A higher geothermal temperature significantly reduced the number of cracks in the concrete component during composite failure and mitigated the influence of the inclined interface angle. The failure modes of the specimens include axial penetration splitting, interface shear, Y-shaped fracture, and interface splitting-concrete shear failure. Finally, a model relating the strength of the rock-concrete composite to the inclined interface angle and the geothermal temperature was derived and verified against the experimental results with a relative error of 9.8%. The findings have significant implications for the safety and stability of tunnels in high-temperature conditions. |
| 资助项目 | Hebei Natural Science Foundation[E2021402023] ; Hebei Natural Science Foundation[E2024402061] ; Special Fundamental Research Project of Hebei Natural Science Foundation[Z018022] ; Open Subject of the State Key Laboratory of Geotechnical Mechanics and Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[BJ2019023] ; Science and Technology Project of Hebei Education Department |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001405363800001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37387]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Shiwei; Cheng, Fang |
| 作者单位 | 1.Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Hebei Univ Engn, Coll Water Conservancy & Hydropower, Handan 056038, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shiwei,Zhao, Jiaxin,Cheng, Fang,et al. Mechanical Behavior and Failure Mechanism of Rock-Concrete Composites Under the Coupling Effect of Inclined Interface Angle and Ground Temperature[J]. SYMMETRY-BASEL,2025,17(1):18. |
| APA | Liu, Shiwei,Zhao, Jiaxin,Cheng, Fang,Yu, Hao,&Chen, Jiaqi.(2025).Mechanical Behavior and Failure Mechanism of Rock-Concrete Composites Under the Coupling Effect of Inclined Interface Angle and Ground Temperature.SYMMETRY-BASEL,17(1),18. |
| MLA | Liu, Shiwei,et al."Mechanical Behavior and Failure Mechanism of Rock-Concrete Composites Under the Coupling Effect of Inclined Interface Angle and Ground Temperature".SYMMETRY-BASEL 17.1(2025):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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