Parameter design of yielding layers for squeezing tunnels
文献类型：期刊论文
| 作者 | Tian, Y.1,2; Chen, W. Z.1,3; Tian, H. M.1; Tan, X. J.1; Li, Z.1,2; Lei, J.1,2 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 108页码:8 |
| 关键词 | Yielding layer Laboratory test Yielding stress Squeezing tunnel |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2020.103694 |
| 英文摘要 | Tunneling in a soft rock mass under high in situ stress often results in squeezing deformation. Supports that use yielding layers are suggested to address the squeezing deformation of tunnels. However, feasible design methods for the yielding layer have not been proposed, especially for the determination of the yielding stress P-s and thickness d. In this study, a laboratory test is conducted to verify the effect of the yielding support. The test results show that the pressure of the secondary lining is reduced with the installation of the yielding layer. The comparisons between the laboratory test and uniaxial tests of confined and unconfined conditions showed that the whole stress-strain curve of the yielding layer can be obtained by its confined compression tests. The whole stress-strain curve of the yielding layer can be divided into three stages: elastic stage, yielding stage and failure stage. Compared with other yielding lining, a polyurethane (PU) yielding layer with density (70-100) is more suitable for the yielding layer as it has high deformation capacity and adjustable yielding stress. A design method of a PU yielding layer considering its density is proposed, and the key parameters of the yielding layer for a squeezing tunnel are determined. |
| 资助项目 | China Geological Survey[DD20190309] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-423] ; National Natural Science Foundation of China[51991392] ; National Natural Science Foundation of China[U1806226] ; Hubei Province Innovative Research Groups[2018CFA012] ; Science & Technology Research and Development Program of China Railway[P2018G045] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000606470000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25560]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, W. Z.; Tian, H. M. |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250061, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Y.,Chen, W. Z.,Tian, H. M.,et al. Parameter design of yielding layers for squeezing tunnels[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2021,108:8. |
| APA | Tian, Y.,Chen, W. Z.,Tian, H. M.,Tan, X. J.,Li, Z.,&Lei, J..(2021).Parameter design of yielding layers for squeezing tunnels.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,108,8. |
| MLA | Tian, Y.,et al."Parameter design of yielding layers for squeezing tunnels".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 108(2021):8. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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