Failure Performance of 3DP Physical Twin-Tunnel Model and Corresponding Safety Factor Evaluation
文献类型：期刊论文
| 作者 | Jiang, Quan2; Liu, Xiaopei1,2; Yan, Fei2; Yang, Yao1,2; Xu, Dingping2; Feng, Guangliang2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2020-09-22 |
| 页码 | 20 |
| 关键词 | Twin tunnels Safety degree Physical model test 3D print Instability criterion |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-020-02244-7 |
| 英文摘要 | Quantitative stability evaluation of multi-tunnel structure is an important issue related to the safety assessment and stable construction of geotechnical underground tunnels. In this work, the overall failure process of twin tunnels were exhibited by a physical simulation based on the 3D printing (3DP) sandstone analogues model, and a safety factor method was also presented for evaluating the general safety of multi-tunnel structure. For checking the 3DP material performance of physical model, uniaxial and triaxial compressions for the 3DP cylinder specimens were first tested and showed that their mechanical properties and failure characteristics were similar to natural rock in general. Then, the overloading tests for twin-tunnel model were carried out and have exposed the critical position of overall failure of twin-tunnel structure through visual observation and automatic measurement. Testing results and corresponding numerical back analysis indicated that the connectivity of plastic strain between tunnels can be deemed as the conservative instability criterion (i.e. yielding of material) and the inflection point of tunnels' displacement can be deemed as overall failure criterion (i.e. structure failure) for twin-tunnel structure. The safety analysis for underground hydraulic caverns indicated that this method can provide a reference for quantitative and reasonable evaluation of the general safety of multi-tunnels or caverns and the local instability zone of surrounding rock. |
| 资助项目 | National Natural Science Foundation of China[U1965205] ; National Natural Science Foundation of China[51779251] ; Hubei Province Outstanding Youth Fund[2017CFA060] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000572007400001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24849]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yan, Fei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Quan,Liu, Xiaopei,Yan, Fei,et al. Failure Performance of 3DP Physical Twin-Tunnel Model and Corresponding Safety Factor Evaluation[J]. ROCK MECHANICS AND ROCK ENGINEERING,2020:20. |
| APA | Jiang, Quan,Liu, Xiaopei,Yan, Fei,Yang, Yao,Xu, Dingping,&Feng, Guangliang.(2020).Failure Performance of 3DP Physical Twin-Tunnel Model and Corresponding Safety Factor Evaluation.ROCK MECHANICS AND ROCK ENGINEERING,20. |
| MLA | Jiang, Quan,et al."Failure Performance of 3DP Physical Twin-Tunnel Model and Corresponding Safety Factor Evaluation".ROCK MECHANICS AND ROCK ENGINEERING (2020):20. |
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。