Numerical Modeling of Stress Disturbance Characteristics during Tunnel Excavation
文献类型：期刊论文
| 作者 | Zhu, Zeqi1,3; Sheng, Qian1,3; Zhang, Yumin4; Liu, Shiwei2,3 |
| 刊名 | ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2020-04-28 |
| 卷号 | 2020页码:9 |
| ISSN号 | 1687-8434 |
| DOI | 10.1155/2020/4508905 |
| 英文摘要 | The stress state and principal stress axis changes of the stress-field tensor are analyzed during the advancement of a tunnel face on the basis of a given case study of the Jinping II Hydropower Station in China. First, the prevailing pole diagram in geology is used to illustrate the rotation of the stress axes as the tunnel face advances. The results show that the orientation adjustments of principal stresses in different positions near the tunnel boundary share common characteristics. The major and minor principal stress axes ahead of the tunnel face will rotate to intersect with the excavation surface at an angle, with the intermediate principal stress axis being almost parallel to the excavation surface. Furthermore, the stress triaxiality that is commonly used to indicate the deformation and damage of metal materials is introduced to describe the stress state change of the excavation-induced stress. The stress triaxiality is found to represent the stress state change due to the variation in both the magnitude and orientation of the stress-field tensor. According to the physical meaning and the change law of the stress triaxiality, stress disturbance during tunnel excavation can be divided into four stages, and the stress disturbance zone is divided into a strong disturbance zone and a weak disturbance zone. The disturbance characteristics of different stages and the distribution patterns of various zones are analyzed, which may be useful for practical application in the design and construction of rock tunnels. |
| 资助项目 | National Basic Research Program of China[2015CB057905] ; State Key Laboratory of Geotechnical Mechanics and Engineering[Z018022] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000533367800001 |
| 出版者 | HINDAWI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24168]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Shiwei |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 10049, Peoples R China 2.Hebei Univ Engn, Coll Water Conservancy & Hydropower, Handan 056001, Hebei, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 4.North China Univ Water Resources & Elect Power, Sch Resources & Environm, Zhengzhou 450046, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Zeqi,Sheng, Qian,Zhang, Yumin,et al. Numerical Modeling of Stress Disturbance Characteristics during Tunnel Excavation[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2020,2020:9. |
| APA | Zhu, Zeqi,Sheng, Qian,Zhang, Yumin,&Liu, Shiwei.(2020).Numerical Modeling of Stress Disturbance Characteristics during Tunnel Excavation.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2020,9. |
| MLA | Zhu, Zeqi,et al."Numerical Modeling of Stress Disturbance Characteristics during Tunnel Excavation".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING 2020(2020):9. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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