| 土工袋加固原理与极限强度的分析研究 |
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| 引用本文： | 白福青,刘斯宏,王艳巧.土工袋加固原理与极限强度的分析研究[J].岩土力学,2010,31(Z1):172-176. |
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| 作者姓名： | 白福青 刘斯宏 王艳巧 |
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| 作者单位： | 河海大学水利水电工程学院,南京,210098 |
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| 基金项目： | 国家十一五科技支撑计划课题 |
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| 摘 要： | 回顾了土工袋在二维应力状态下的加固原理和对应的Mohr-Coulomb强度公式,指出其不足之处,并建议以三维应力状态分析土工袋加固原理。分别以广义Mises破坏准则和Lade-Duncan破坏准则为理论基础,推导出土工袋在三维复杂应力作用下的极限抗压强度表达式。通过对二维、三维强度计算值与土工袋抗压强度试验实测结果的比较分析,验证新的三维土工袋强度公式的计算结果更接近于试验实测值,而且其适用范围更广。
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| 关 键 词： | 土工袋 广义Mises破坏准则 Lade-Duncan破坏准则 极限抗压强度 |
| 收稿时间： | 2010-02-20 |
Research on reinforcement mechanism and failure strength of soilbags |
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| BAI Fu-qing,LIU Si-hong,WANG Yan-qiao.Research on reinforcement mechanism and failure strength of soilbags[J].Rock and Soil Mechanics,2010,31(Z1):172-176. |
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| Authors: | BAI Fu-qing LIU Si-hong WANG Yan-qiao |
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| Institution: | College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The reinforcement mechanism and the ultimate compressive strength formula of soilbags in 2D space are reviewed; and the deficiency of the formula is also highlighted. The reinforcement mechanism of soilbags in 3D space is suggested; and two ultimate compressive strength formulas of soilbags under complicated stress situation are derived, which are based on the extended von Mises criterion and the Lade-Duncan criterion respectively. The new formulas are successfully used to predict soilbags’ compressive strength; and their values are verified to be much more close to the experimental measured values from compressive tests on soilbags compared to the values calculated from the 2D strength formulas. |
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| Keywords: | soilbag extended von Mises criterion Lade-Duncan criterion ultimate compressive strength |
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