Lateral compression and energy absorption of foamed concrete-filled polyethylene circular pipe as yielding layer for high geo-stress soft rock tunnels
文献类型：期刊论文
| 作者 | Zhang, Chaoxuan; Tan, Xianjun; Tian, Hongming; Chen, Weizhong |
| 刊名 | INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 32期号:5页码:1087 |
| 关键词 | Soft rock Yielding layer Foamed concrete Polyethylene pipe Lateral compression Energy absorption |
| ISSN号 | 2095-2686 |
| 英文摘要 | Foamed concrete as energy absorption material for high geo-stress soft rock tunnels has been proven to be feasible due to its high compressibility and lightweight. However, the lengthy curing and defoaming problems caused by the cast-in-place method of large-volume foamed concrete remain unsolved. In this study, we propose a novel energy absorber composed of foamed concrete-filled polyethylene (FC-PE) pipe and analyze its deformation and energy absorption capacity via quasi-static lateral compression experiments. Results show that FC-PE pipes exhibit typical three-stage deformation characteristics, comprising the elastic stage, the plastic plateau, and the densification stage. Furthermore, the plateau stress, energy absorption, and specific energy absorption of the specimens are 0.81-1.91 MPa, 164-533 J, and 1.4-3.6 J/g, respectively. As the density of the foamed concrete increases, the plateau stress and energy absorption increase significantly. Conversely, the length of the plastic plateau and energy absorption efficiency decrease. Moreover, based on the vertical slice method, progressive compression of core material, and the 6 plastic hinges deformation mechanism of the pipe wall, a theoretical calculation method for effective energy absorption is established and achieves good agreement with experimental results, which is beneficial to the optimization of the composite structure. (c) 2022 Published by Elsevier B.V. on behalf of China University of Mining & Technology. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 学科主题 | Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000917926900007 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34870]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Zhang, Chaoxuan,Tan, Xianjun,Tian, Hongming,et al. Lateral compression and energy absorption of foamed concrete-filled polyethylene circular pipe as yielding layer for high geo-stress soft rock tunnels[J]. INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,2022,32(5):1087. |
| APA | Zhang, Chaoxuan,Tan, Xianjun,Tian, Hongming,&Chen, Weizhong.(2022).Lateral compression and energy absorption of foamed concrete-filled polyethylene circular pipe as yielding layer for high geo-stress soft rock tunnels.INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,32(5),1087. |
| MLA | Zhang, Chaoxuan,et al."Lateral compression and energy absorption of foamed concrete-filled polyethylene circular pipe as yielding layer for high geo-stress soft rock tunnels".INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY 32.5(2022):1087. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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