| 非饱和原状黄土强度特性的试验研究 |
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| 引用本文： | 扈胜霞,周云东,陈正汉.非饱和原状黄土强度特性的试验研究[J].岩土力学,2005,26(4):660-663. |
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| 作者姓名： | 扈胜霞 周云东 陈正汉 |
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| 作者单位： | 1. 河海大学,岩土工程研究所,南京,210098
2. 后勤工程学院,土木工程系,重庆,400041 |
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| 摘 要： | 用新研制的非饱和土直剪仪,进行了4组16个控制吸力的非饱和土直剪试验,得到了原状黄土的抗剪强度曲线。分析和探讨了非饱和原状黄土的强度特性。研究表明,同吸力对应的抗剪强度线在σ-τ图中的位置明显不同,且呈直线式上升;在试验研究的吸力范围内,原状黄土的摩擦角随吸力的变化很小,而粘聚力呈随吸力线性增加。
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| 关 键 词： | 原状黄土 基质吸力 强度 |
| 文章编号： | 1000-7598-(2005)04-0660-04 |
| 收稿时间： | 2003-12-31 |
Test study on strength character of unsaturated and undisturbed loess |
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| HU Sheng-xia,ZHOU Yun-dong,CHEN Zheng-han.Test study on strength character of unsaturated and undisturbed loess[J].Rock and Soil Mechanics,2005,26(4):660-663. |
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| Authors: | HU Sheng-xia ZHOU Yun-dong CHEN Zheng-han |
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| Institution: | 1. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China; 2. Logistical Engineering University, Chongqing 400041, China |
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| Abstract: | The direct shear tests of 16 specimens of loess (4 groups) with controlling matric suction were carried out; and the shear strength curve of the unsaturated and undisturbed loess were obtained by using a new direct shear meter for unsaturated soils. Strength characters of unsaturated and undisturbed loess were analysed and inquired. The study shows that the shear strength curves with different matric suctions have different locations in a - figure as well as linear rising; the friction angle of undisturbed loess has little change with the change of matric suction; but the cohesion has a linear increase with the increasing of matric suction. |
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| Keywords: | undisturbed loess matric suction strength |
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