| 用统一强度理论求岩基极限承载力 |
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| 引用本文： | 李杭州,廖红建,兰霞.用统一强度理论求岩基极限承载力[J].岩石力学与工程学报,2004,23(Z1):4311-4314. |
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| 作者姓名： | 李杭州 廖红建 兰霞 |
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| 作者单位： | 1. 西安交通大学建筑工程与力学学院,西安,710049
2. 西安交通大学建筑工程与力学学院,西安,710049;中国科学院武汉岩土力学研究所,武汉,430071 |
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| 基金项目： | 国家自然科学基金(50379043)和中国科学院武汉岩土力学研究所岩土力学重点实验室开放课题基金(Z110302)资助项目. |
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| 摘 要： | 基于统一强度理论,将岩基承载力问题视为空间问题,考虑了中间主应力的影响,推导出了岩基承载力的计算公式。当中间主剪应力的影响系数b=0时,其计算公式与采用Mohr-Coulomb强度理论所求得的解完全相同。并讨论了b对承载压力的影响,分析表明:岩基承载力随着b值的变化而不同,从而说明所推导公式对岩基承载力计算有一定的指导意义。
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| 关 键 词： | 岩石力学 岩基 统一强度理论 承载力 |
| 文章编号： | 1000-6915(2004)增1-4311-04 |
| 修稿时间： | 2004年4月10日 |
DETERMINATION OF ULTIMATE BEARING CAPACITY OF ROCK FOUNDATION BASED ON UNIFIED STRENGTH THEORY |
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| Li Hangzhou,Liao Hongjian,Lan Xia.DETERMINATION OF ULTIMATE BEARING CAPACITY OF ROCK FOUNDATION BASED ON UNIFIED STRENGTH THEORY[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(Z1):4311-4314. |
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| Authors: | Li Hangzhou Liao Hongjian Lan Xia |
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| Affiliation: | Li Hangzhou1,Liao Hongjian1,2,Lan Xia1 |
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| Abstract: | The formulas of bearing capacity of rock foundation are established in conditions that the problem of bearing capacity of rock foundation is taken as the spatial problem and the intermediate principal stress is considered based on unified strength theory.When influence coefficient of intermediate principal shear stress b = 0,the formulas are the same as those by Mohr-Coulomb theory.The effect of b on bearing pressure is discussed,and the results show that the bearing capacity of rock changes with b. |
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| Keywords: | rock mechanics rock foundation unified strength theory bearing capacity |
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