Modeling transient excavation-induced dynamic responses in rock mass using an elasto-plastic cellular automaton
文献类型：期刊论文
| 作者 | Li, Mei3; Mei, Wanquan3; Pan, Peng-Zhi1,2; Yan, Fei2; Wu, Zhenhua2; Feng, Xia-Ting1
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| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 96页码:13 |
| 关键词 | Elasto-plastic cellular automaton Transient unloading analysis Updating rules Elasto-plastic dynamics Dynamic response |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2019.103183 |
| 英文摘要 | The problem of transient excavation-induced dynamic response in rock mass is discretized on both spatial and temporal scales and is solved by using the cellular automaton (CA) technique and the Newmark scheme, respectively. Using this approach, a dynamic analysis version of 3D elasto-plastic cellular automaton (EPCA(3D)) is developed. The advantage of this method is it avoids the solution of large-scale linear equations since only the local CA rule is used for dynamic state updating. The Den Iseger algorithm is introduced to validate the numerical method. The evolution of stress and velocity for the transient excavation in rock mass under different conditions obtained by the EPCA(3D) and Den Iseger methods are in good agreement. The abilities of EPCA(3D) in the modeling of elasto-plastic dynamics of transient excavation in rock mass are well demonstrated. By considering different in situ stresses, excavation radiuses, unloading durations and unloading paths, the factors affecting nonlinear dynamic responses are investigated. It is found that the failure extent increases with the decrease of unloading time. When lateral pressure coefficient (sigma(x)/sigma(y)) equals to 1, the failure zone is evenly distributed around the tunnel. However, with the decrease of lateral pressure coefficient, the extent of failure localization increases. The fault around the tunnel makes the dynamic failure zone asymmetric distribution. The modeling helps to understand the major mechanism of rock mass damage for the transient excavation. |
| 资助项目 | State Key Research Development Program of China[2017YFC0804203] ; National Nature Science Foundation of China[51621006] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-DQCO29] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000509614300006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23312]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Pan, Peng-Zhi |
| 作者单位 | 1.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mei,Mei, Wanquan,Pan, Peng-Zhi,et al. Modeling transient excavation-induced dynamic responses in rock mass using an elasto-plastic cellular automaton[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2020,96:13. |
| APA | Li, Mei,Mei, Wanquan,Pan, Peng-Zhi,Yan, Fei,Wu, Zhenhua,&Feng, Xia-Ting.(2020).Modeling transient excavation-induced dynamic responses in rock mass using an elasto-plastic cellular automaton.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,96,13. |
| MLA | Li, Mei,et al."Modeling transient excavation-induced dynamic responses in rock mass using an elasto-plastic cellular automaton".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 96(2020):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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