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| Drucker-Prager系列屈服准则在稳定分析中的应用研究 | |
| 引用本文： | 王先军,陈明祥,常晓林,周伟,袁子厚.Drucker-Prager系列屈服准则在稳定分析中的应用研究[J].岩土力学,2009,30(12):3733-3738. |
| 作者姓名： | 王先军 陈明祥 常晓林 周伟 袁子厚 |
| 作者单位： | 1. 武汉大学,土木建筑工程学院,武汉,430072;三峡大学,土木水电学院,宜昌,443002 2. 武汉大学,土木建筑工程学院,武汉,430072 3. 武汉大学,水资源与水电工程科学国家重点实验室,武汉,430072 |
| 基金项目： | 湖北省教育厅重点项目 |
| 摘 要： | Drucker-Prager（下简称D-P）系列屈服准则作为Mohr-Coulomb（下简称M-C）准则的修正模型在岩土工程中得到了广泛的使用。然而采用不同的D-P系列屈服准则可能会得到差距较大的结果，因此，选用合适的D-P系列屈服准则十分重要。在研究了D-P系列屈服准则与M-C准则之间的对应关系之后，指出D-P系列屈服准则对应的Lode角取值较为有限，难以反映出材料在丰富受力状态下的M-C准则屈服强度，将其取值范围扩大至－30°～30°，并以某边坡和向家坝泄12坝段抗滑稳定分析为例，对如何选用合适的D-P系列屈服准则这一问题进行了研究，提出了具体的选择方法。研究结果表明，只要选用的D-P系列屈服准则对应的Lode角能反映影响边坡和坝基稳定的关键部位的受力状态，就能够得到较好的结果，将D-P系列屈服准则对应的Lode角取值范围扩大至－30°～30°也是必要的。 |
| 关 键 词： | Drucker-Prager系列屈服准则 Mohr-Coulomb Lode角 稳定分析 |
| 收稿时间： | 2009-04-07 |
Studies of application of Drucker-Prager yield criteria to stability analysis |
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| WANG Xian-jun,CHEN Ming-xiang,CHANG Xiao-lin,ZHOU Wei,YUNA Zi-hou.Studies of application of Drucker-Prager yield criteria to stability analysis[J].Rock and Soil Mechanics,2009,30(12):3733-3738. | |
| Authors: | WANG Xian-jun CHEN Ming-xiang CHANG Xiao-lin ZHOU Wei YUNA Zi-hou |
| Institution: | 1. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China; 2. College of Civil and Hydropower Engineering, China Three Gorges University, Yichang 443002, China; 3.WuHan University State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan 430072,China |
| Abstract: | The Drucker-Prager yield criteria are widely used in geotechnical engineering as modified models of Mohr-Coulomb criterion. Great differences may be made between results with different Drucker-Prager yield criteria. It is important to select a proper Drucker-Prager yield criterion in geotechnical engineering analysis. The range of Lode angle of Drucker-Prager yield criterion is too limit to reflect more stressed conditions and should be enlarged from -30°to 30°is pointed out. Studies of section how to select a proper Drucker-Prager yield criterion are made based on stability analyses of a certain slope and that of dam #12 foundation of the Xiangjiaba Project. Studies show that more reasonable results can be achieved if the Lode angle of Drucker-Prager yield criterion selected can reflect the stressed condition of important parts which play important roles in maintaining stability of dam foundation or slope; and it is necessary to enlarge the range of Lode angle of Drucker-Prager yield criterion. |
| Keywords: | Mohr-Coulomb Drucker-Prager yield criteria Mohr-Coulomb criterion Lode angle stability analysis |
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