Investigating Steel Honeycomb Structure as Yielding Support Element for Tunnelling in Uneven Squeezing Ground
文献类型：期刊论文
| 作者 | Liang, Weiming1; Yang, Diansen1; Tian, Hongming2; Bian, Hanbing3 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2024-07-19 |
| 页码 | 20 |
| 关键词 | Tunnelling engineering Honeycomb structure Yielding support Uneven squeezing ground Numerical simulation |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-024-04053-8 |
| 英文摘要 | The yielding supports have been successfully used as a viable support solution in squeezing tunnels. When the lithological distribution of the formation exhibits non-uniformity, the stress on the yielding support becomes complicated and the yielding elements need to withstand not only axial compressive stress but also transverse shear stress. However, the design of previous yielding elements has often neglected consideration of the transverse shear force. To make yielding supports more suitable for tunnels in uneven squeezing ground, a honeycomb structure as yielding element is proposed due to excellent energy absorption and shear resistance. In this study, the mechanical response of honeycomb element is simulated by an equivalent orthotropic model, the plastic stage of honeycomb element is simulated by stiffness degradation method, and the mechanical characteristic parameters of the equivalent model are calculated by theoretical formula. Several numerical analyses are conducted to investigate the applicability of the honeycomb structure as a yielding element and to determine the optimal design size of the honeycomb element in uneven squeezing tunnels. According to the numerical simulation results, the honeycomb element can effectively resist transverse shear load whilst satisfying axial compression deformation. The use of honeycomb elements enhances the deformation capacity of the primary lining, significantly reduces internal compressive stress and overall plastic zone of the primary lining. The aspect ratio of the honeycomb element significantly influences the stress on the yielding support, and the optimal aspect ratio is determined based on the total failure zone of the lining. A honeycomb structure with high transverse shear strength is proposed as the yielding element.The mechanical response of the honeycomb element is characterised using an orthotropic constitutive model, and the yielding stage is simulated employing the stiffness degradation method.The applicability of the honeycomb element is investigated in uneven squeezing ground, and the optimal design size is determined. |
| 资助项目 | National Natural Science Foundation of China[U22A20595] ; National Natural Science Foundation of China[12202463] ; National Natural Science Foundation of China |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001272309700003 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41979]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Diansen |
| 作者单位 | 1.Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Univ Lille, Univ Artois, Lab Genie Civil & Geo Environm LGCgE, IMT Lille Douai,JUNIA,ULR 4515, F-59000 Lille, France |
| 推荐引用方式 GB/T 7714 | Liang, Weiming,Yang, Diansen,Tian, Hongming,et al. Investigating Steel Honeycomb Structure as Yielding Support Element for Tunnelling in Uneven Squeezing Ground[J]. ROCK MECHANICS AND ROCK ENGINEERING,2024:20. |
| APA | Liang, Weiming,Yang, Diansen,Tian, Hongming,&Bian, Hanbing.(2024).Investigating Steel Honeycomb Structure as Yielding Support Element for Tunnelling in Uneven Squeezing Ground.ROCK MECHANICS AND ROCK ENGINEERING,20. |
| MLA | Liang, Weiming,et al."Investigating Steel Honeycomb Structure as Yielding Support Element for Tunnelling in Uneven Squeezing Ground".ROCK MECHANICS AND ROCK ENGINEERING (2024):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。