Extrusion 3D printing circular and horseshoe tunnel physical models: A comparative study of deformation and brittle failure
文献类型：期刊论文
| 作者 | Liu, Qiang1,3; Jiang, Quan1; Yu, Yang3; Rong, Yao2; Sun, Yang2; Zhao, Herui1 |
| 刊名 | THEORETICAL AND APPLIED FRACTURE MECHANICS
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 129页码:15 |
| 关键词 | Cement-based 3D printing Circular tunnel Horseshoe tunnel Overload experiment Brittle failure RDM model and RFD index |
| ISSN号 | 0167-8442 |
| DOI | 10.1016/j.tafmec.2023.104229 |
| 英文摘要 | The instability of high-stress hard rock tunnels mainly presented with the deformation and brittle failure, the tunnel brittle failure's location and range are dissimilar under different stress and shape conditions. In this study, similar 3D printing materials are developed according to the brittleness index of the hard rock in an underground cavern. The physical models of circular and horseshoe tunnel with the equal area are printed, and overloading tests are carried out. The test results reveal that the horseshoe tunnel's peak strength and residual strength are decreased by 17.2% and 6.6% compared with that of the circular tunnel, the circular tunnel's vertical displacement is greater than the horseshoe tunnel's, and the depth and range of brittle failure in the circular tunnel are bigger than the horseshoe tunnel's. The circular tunnel brittle failure is mainly in the middle of both sides' walls, while the horseshoe tunnel brittle failure is mainly in the bottom of both sides' walls. The location and range of the tunnels' brittle failure can be well simulated by using the rock mass deterioration model (RDM) combined with the rock fracture degree (RFD) index, and the numerical simulation results are consistent with the physical simulation experiment results. According to the results of laboratory physical model experiment and numerical simulation, the brittle failure evolution model of hard rock tunnel is proposed, which can provide a reference for the excavation and support design of hard rock tunnel under high stress. |
| 资助项目 | National Natural Science Foundation of China[52325905] ; National Natural Science Foundation of China[42177156] ; Major Scientific Equipment Project of State Key Laboratory of Geomechanics and Geotechnical Engineering[E01I011501] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001140573300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40386]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Jiang, Quan |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Jiangxi Inst Transportat Res Co Ltd, Nanchang 330200, Peoples R China 3.East China Jiaotong Univ, Key Lab Geotech Engn Infrastruct & Safety Control, Nanchang 330013, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qiang,Jiang, Quan,Yu, Yang,et al. Extrusion 3D printing circular and horseshoe tunnel physical models: A comparative study of deformation and brittle failure[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2024,129:15. |
| APA | Liu, Qiang,Jiang, Quan,Yu, Yang,Rong, Yao,Sun, Yang,&Zhao, Herui.(2024).Extrusion 3D printing circular and horseshoe tunnel physical models: A comparative study of deformation and brittle failure.THEORETICAL AND APPLIED FRACTURE MECHANICS,129,15. |
| MLA | Liu, Qiang,et al."Extrusion 3D printing circular and horseshoe tunnel physical models: A comparative study of deformation and brittle failure".THEORETICAL AND APPLIED FRACTURE MECHANICS 129(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。