| 基于非线性统一强度理论的节理
岩体地基承载力研究 |
| |
| 引用本文： | 师林,朱大勇,沈银斌.基于非线性统一强度理论的节理
岩体地基承载力研究[J].岩土力学,2012,33(Z2):371-376. |
| |
| 作者姓名： | 师林 朱大勇 沈银斌 |
| |
| 作者单位： | 1. 合肥工业大学 土木与水利工程学院，合肥 230009；2. 合肥工业大学 安徽土木工程结构与材料省级实验室，合肥 230009 |
| |
| 基金项目： | 教育部博士点基金资助(No.20090111110014);国家自然基金资助(No.51078123) |
| |
| 摘 要： | 现有的节理岩体地基承载力计算方法大多是以Hoek-Brown强度准则为基础建立的，没有考虑中间主应力的效应，不能充分发挥岩体的强度潜能。综合统一强度理论和Hoek-Brown强度准则的优点，结合临界滑动场理论求解地基承载力，并考虑地震荷载的影响。计算结果表明，基于非线性统一强度理论的地基承载力有不同程度的提高，现有方法中的地基承载力偏于保守；在地震荷载作用下地基承载力有一定程度的降低。
|
| 关 键 词： | 岩体力学 地基承载力 非线性统一强度准则 Hoek-Brown非线性破坏准则 临界滑动场 地震荷载 |
| 收稿时间： | 2011-10-27 |
Study of foundation bearing capacity of joined rock masses based on nonlinear unified strength theory |
| |
| SHI Lin,ZHU Da-yong,SHEN Yin-bin.Study of foundation bearing capacity of joined rock masses based on nonlinear unified strength theory[J].Rock and Soil Mechanics,2012,33(Z2):371-376. |
| |
| Authors: | SHI Lin ZHU Da-yong SHEN Yin-bin |
| |
| Institution: | 1. School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; 2. Anhui Provincial Laboratory of Structure and Materials of Civil Engineering, Hefei University of Technology, Hefei 230009, China |
| |
| Abstract: | For most of the existing algorithms for calculating ultimate bearing capacity of jointed rock masses based on Hoek-Brown strength theory, they have not considered the effect of intermediate principal stress; so these algorithms cannot make full use of rock strength. Combining the advantage of nonlinear unified strength criterion and Hoek-Brown nonlinear failure criterion, and taking the impacts of earthquake loads into account, a new algorithm for computing the bearing capacity of foundation based on critical sliding field theory is proposed. The experiment results demonstrate that the bearing capacity of the foundation is enhanced based on nonlinear unified strength theory; the existing methods of bearing capacity of foundation are relatively conservative, so the bearing capacity of foundation will reduce under the effects of earthquake loads. |
| |
| Keywords: | rock mass mechanics foundation bearing capacity nonlinear unified strength criterion Hoek-Brown nonlinear failure criterion critical slip fields earthquake loads |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
