Influence of end effect on rock strength in true triaxial compression test
文献类型：期刊论文
| 作者 | Feng, X. T.1,4; Xu, Y. H.2,3; Cai, M.1,2,3; Zhang, X. W.4 |
| 刊名 | CANADIAN GEOTECHNICAL JOURNAL
 |
| 出版日期 | 2017 |
| 卷号 | 54期号:6页码:862-880 |
| 关键词 | true triaxial compression test intermediate principal stress rock strength end effect three-dimensional empirical failure criterion numerical modeling |
| ISSN号 | 0008-3674 |
| DOI | 10.1139/cgj-2016-0393 |
| 英文摘要 | The influence of the end effect on rock strength in true triaxial compression testing was studied using a numerical approach. The influence of the intermediate principal stress (sigma(2)) on rock strength was isolated by using the two-dimensional Mohr-Coulomb failure criterion that depends only on the major principal stress (sigma(1)) and minor principal stress (sigma(3)). Thus, any enhancement to the rock strength with the increase of sigma(2) can be attributed to the end effect. It was shown that the end effect can result in an apparent sigma(2) effect, as long as the coefficient of friction (mu) at the rock specimen-steel platen contacts is not zero and the specimen in the sigma(2) loading direction is squat. When the strengthening due to the increase of sigma(2) predicted by a theoretical failure criterion was added to the strengthening due to the end effect, the results were in good agreement with the observed sigma(2) effect from some previous laboratory tests, indicating that the observed sigma(2) effect in true triaxial compression testing could be partially influenced by the end effect, particularly when sigma(3) was low. It is suggested to decrease the end effect to a level where the apparent sigma(2) effect is very small so that the obtained test results are more meaningful to characterize the actual sigma(2) effect. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000402315200009 |
| 出版者 | CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4071]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Laurentian Univ, Bharti Sch Engn, Sudbury, ON P3E 2C6, Canada; 3.Laurentian Univ; 4.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab |
| 推荐引用方式 GB/T 7714 | Feng, X. T.,Xu, Y. H.,Cai, M.,et al. Influence of end effect on rock strength in true triaxial compression test[J]. CANADIAN GEOTECHNICAL JOURNAL,2017,54(6):862-880. |
| APA | Feng, X. T.,Xu, Y. H.,Cai, M.,&Zhang, X. W..(2017).Influence of end effect on rock strength in true triaxial compression test.CANADIAN GEOTECHNICAL JOURNAL,54(6),862-880. |
| MLA | Feng, X. T.,et al."Influence of end effect on rock strength in true triaxial compression test".CANADIAN GEOTECHNICAL JOURNAL 54.6(2017):862-880. |
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。