| 岩溶区岩石地基承载力的确定 |
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| 引用本文： | 刘之葵,曹平. 岩溶区岩石地基承载力的确定[J]. 湖南科技大学学报(自然科学版), 2006, 21(4): 51-56 |
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| 作者姓名： | 刘之葵 曹平 |
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| 作者单位： | 1. 中南大学,资源与安全工程学院,湖南,长沙,410083;桂林工学院,土木工程系,广西,桂林,541004
2. 中南大学,资源与安全工程学院,湖南,长沙,410083 |
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| 基金项目： | 广西教育厅科研项目（桂教科研[2004]20号）;中南大学博士后科学基金 |
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| 摘 要： | 根据Hoek-Brown强度准则，推求了局部剪切破坏下的岩石地基极限承载力；根据极限平衡条件，推求了地基整体剪切破坏模式的岩石地基极限承载力．推求了舍溶洞、基岩面起伏大等情形下的岩石地基极限承载力确定方法．岩石在地基三向围压情况下，其地基承载能力将提高．在实践中，应根据岩石地基承载力具体的确定方法，再考虑是否需要进行岩石地基承载力的深度和宽度修正周4，参10．
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| 关 键 词： | 岩溶 岩石地基 承载力 破坏模式 |
| 文章编号： | 1672-9102（2006）04-0051-06 |
| 收稿时间： | 2006-04-30 |
| 修稿时间： | 2006-04-30 |
Bearing Capacity Determination of Rock Foundation in Karst Region |
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| LIU Zhi-kui,CAO Ping. Bearing Capacity Determination of Rock Foundation in Karst Region[J]. Journal of Hunan University of Science & Technology(Natural Science Editon), 2006, 21(4): 51-56 |
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| Authors: | LIU Zhi-kui CAO Ping |
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| Affiliation: | 1 .School of Resources and Safety Engineering, Central South University, Changsha 410083, China; 2.Department of Civil Engineering, Guilin Institute of Technology, Guilin 541004, China |
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| Abstract: | With the yield criteria of Hock-Brown, the ultimate bearing capacity of rock foundation was deduced under local shear failure. With the limit equilibrium condition, the ultimate bearing capacity of rock foundation was deduced under general shear failure. When there is cave in rock mass or the undulation of terrain of bed rock is large, the methods for determination of ultimate bearing capacity of rock foundation was deduced. The bearing capacity of rock foundation will be increased when rock is under the action of peripheral compression. In the process of engineering practice, it should according to the concrete methods for determination of bearing capacity of rock foundation, then make a decision for whether the depth and width of foundation are revised or not. 4figs., 10refs. |
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| Keywords: | karst rock foundation bearing capacity failure model |
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