Elasto-plastic analysis of a circular opening in strain-softening rock mass
文献类型：期刊论文
| 作者 | Zhang, Qiang1,2; Wang, Shui-lin2; Ge, Xiu-run2; Zhang, Hou-quan1; Jiang, Bin-Song1 |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2012 |
| 卷号 | 50页码:38-46 |
| ISSN号 | 1365-1609 |
| DOI | 10.1016/j.ijrmms.2011.11.011 |
| 英文摘要 | Geo-materials generally show strain-softening behavior after peak-load. To avoid the difficulty of describing variable material properties during the post-failure process in a strain-softening rock mass, a multi-step brittle-plastic model (MBPM) was proposed on the assumption that rock mass properties were uniform in a very small region. Then the post-peak rock mass can be divided into a number of annular regions and the rock mass in each region can be considered to conform to classical plasticity theory. For the strain-softening behavior, material properties of rock mass such as strength and deformation parameters were assumed to follow a piecewise linear function of plastic shear plastic strain. Then the equations for solving the annulus' radius were given on the basis of the material properties and its corresponding plastic shear plastic strain in each annulus, and the radii were calculated in a successive manner by combining the secant and Newton-Raphson method from the outmost one whose initial radius is assumed. Several sets of examples are analyzed to validate the new approach. For elasto-brittle-plastic behavior, the results show high consistency with closed-form solutions. For the strain-softening behavior, the new approach also shows high consistency with the numerical results. Finally, the influence of shear modulus on the rock mass deformation was analyzed and the results show that it can affect the range of residual and softening radius lightly but influence the rock mass deformation heavily, which usually occurs in the geo-engineering, especially in the deep underground engineering. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000300932100005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3326]  |
| 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.China Univ Min & Technol, Sch Mech & Civil Engn, State Key Lab Geomech & Deep Undergrond Engn ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Zhang, Qiang,Wang, Shui-lin,Ge, Xiu-run,et al. Elasto-plastic analysis of a circular opening in strain-softening rock mass[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2012,50:38-46. |
| APA | Zhang, Qiang,Wang, Shui-lin,Ge, Xiu-run,Zhang, Hou-quan,&Jiang, Bin-Song.(2012).Elasto-plastic analysis of a circular opening in strain-softening rock mass.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,50,38-46. |
| MLA | Zhang, Qiang,et al."Elasto-plastic analysis of a circular opening in strain-softening rock mass".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 50(2012):38-46. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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