2D DEM analyses for T-M coupling effects of extreme temperatures on surrounding rock-supporting system of a tunnel in cold region
文献类型：期刊论文
| 作者 | Zhang Yu-jun1; Yang Chao-shuai1,2; Wang Yong-gang3 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2013 |
| 卷号 | 20期号:10页码:2905-2913 |
| 关键词 | extreme temperature tunnel in cold region thermo-mechanical coupling distinct element method numerical analysis |
| ISSN号 | 2095-2899 |
| DOI | 10.1007/s11771-013-1812-4 |
| 英文摘要 | Taking the Kunlunshan Tunnel on Qinghai-Tibet Railway as an engineering background, the curved wall-inverted arch lining of the tunnel was simplified into the straight wall-umbrella arch one, and the fractured rock mass with developed joints was treated as a discrete medium in the calculation. Using the UDEC code, the numerical simulations for thermo-mechanical coupling processes in the surrounding rock mass-supporting system were carried out aiming at the conditions of mean temperature, extreme highest temperature and extreme lowest temperature in one year. The distributions and changes of stresses, displacements, plastic zones, temperatures in the rock mass of near field, as well as the loading states in the model-building concrete and bolting were investigated and compared for these three computation cases. The results show that compared with the case of mean temperature, the ranges, where the temperatures of surrounding rock mass change obviously, are 6.0 m and 6.5 m, respectively, for the cases of extreme highest temperature and extreme lowest temperature; the displacements of tunnel are raised by 3.2-9.3 and 5.7-12.7 times, and the thicknesses of plastic zones reach 1.5-2.5 m and 2.0-4.5 m for case 2 and 3, respectively; the extreme temperatures of air have strong effects on the stress, deformation and failure states of supporting structure of tunnel in cold region, and the influence degree of extreme lowest temperature is the highest. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000325947900035 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3516]  |
| 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, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.China Railway Tunnel Grp Co Ltd, Ctr Tech; 3.Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Dept Geotech Engn |
| 推荐引用方式 GB/T 7714 | Zhang Yu-jun,Yang Chao-shuai,Wang Yong-gang. 2D DEM analyses for T-M coupling effects of extreme temperatures on surrounding rock-supporting system of a tunnel in cold region[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2013,20(10):2905-2913. |
| APA | Zhang Yu-jun,Yang Chao-shuai,&Wang Yong-gang.(2013).2D DEM analyses for T-M coupling effects of extreme temperatures on surrounding rock-supporting system of a tunnel in cold region.JOURNAL OF CENTRAL SOUTH UNIVERSITY,20(10),2905-2913. |
| MLA | Zhang Yu-jun,et al."2D DEM analyses for T-M coupling effects of extreme temperatures on surrounding rock-supporting system of a tunnel in cold region".JOURNAL OF CENTRAL SOUTH UNIVERSITY 20.10(2013):2905-2913. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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