Investigating polymeric foam materials as compressible layer for tunnelling in squeezing ground conditions
文献类型：期刊论文
| 作者 | Tian, Hongming3; Chen, Weizhong3; Tan, Xianjun3; Tian, Yun2; Zhang, Ning1 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 122页码:14 |
| 关键词 | Polymeric foam Compressible layer Rheological deformation Squeezing ground conditions |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2022.104391 |
| 英文摘要 | Installation of a compressible layer between primary support and secondary lining is a feasible solution to decrease damage of the secondary lining induced by the time-dependent deformation in the squeezing tunnel. Laboratory tests and numerical analysis were conducted to investigate the feasibility of the polymeric foam for the compressible layer in a squeezing tunnel. The PU (Polyurethane) foam (density 70 kg/m(3)-100 kg/m(3)) and PE (Polyethylene) foam (density 90 kg/m(3)-130 kg/m(3)) are chosen as candidate filling materials of the compressible layer. The stress-strain curves of the candidate materials show a clear stress plateau stage, and the deformation capability and stress of the plateau stage can meet the requirements of the compressible layer. PU foam with density 80 kg/m(3) is finally selected due to its energy absorption capability for the compressible layer. The performances of the PU foam compressible layer under uniform and nonuniform squeezing deformation are simulated, the results show that the stress and failure zone of the secondary lining can be clearly decreased by the PU foam compressible layer, and the tension stress of secondary lining induced by non-uniform tunnel deformation can be avoided. The mechanical performance of the PU foam indicates the feasibility of using polymeric foam as the compressible layer in squeezing ground conditions. |
| 资助项目 | National Natural Science Foundation of China[5217090638] ; National Natural Science Foundation of China[51991392] ; National Natural Science Foundation of China[51922104] ; National Key Research and Development Program of China[2021YFB2300506] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000765025200005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34658]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Ning |
| 作者单位 | 1.Nanjing Univ Sci & Technol, Sch Sci, Xiaolingwei 200, Nanjing 210094, Peoples R China 2.Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China 3.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 | Tian, Hongming,Chen, Weizhong,Tan, Xianjun,et al. Investigating polymeric foam materials as compressible layer for tunnelling in squeezing ground conditions[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2022,122:14. |
| APA | Tian, Hongming,Chen, Weizhong,Tan, Xianjun,Tian, Yun,&Zhang, Ning.(2022).Investigating polymeric foam materials as compressible layer for tunnelling in squeezing ground conditions.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,122,14. |
| MLA | Tian, Hongming,et al."Investigating polymeric foam materials as compressible layer for tunnelling in squeezing ground conditions".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 122(2022):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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