| 应力状态对膨胀土SWCC的影响研究 |
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| 引用本文： | 龚壁卫,吴宏伟,王斌.应力状态对膨胀土SWCC的影响研究[J].岩土力学,2004,25(12):1915-1918. |
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| 作者姓名： | 龚壁卫 吴宏伟 王斌 |
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| 作者单位： | 1.长江科学院 土工所，湖北 武汉 430010； 2.香港科技大学 土木与结构工程系，香港 |
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| 基金项目： | 香港基金局(HKUST6087/00E)基金资助，长江科学院基金资助 |
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| 摘 要： | 探讨了应力对膨胀土的土-水特征曲线的影响。试验研究表明：膨胀土的首次干湿循环过程的“滞后”现象明显。应力状态对膨胀土的土-水特征曲线影响显著，与常规试验方法相比，一维固结状态和各向等压应力状态下的土-水特征曲线更具线性关系，干湿循环甚至出现了逆向回滞现象。
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| 关 键 词： | 非饱和土 膨胀土 土-水特征曲线 应力式体积压力板仪 |
| 文章编号： | 1000-7598-(2004)12-1915-04 |
| 收稿时间： | 2003-08-27 |
| 修稿时间： | 2003年8月27日 |
Influence of stress states on soil-water characteristics of expansive soils |
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| GONG Bi-wei,Charles.W.W.Ng,WANG Bin.Influence of stress states on soil-water characteristics of expansive soils[J].Rock and Soil Mechanics,2004,25(12):1915-1918. |
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| Authors: | GONG Bi-wei CharlesWWNg WANG Bin |
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| Institution: | 1.Yangtze River Scientific Research Institute,Wuhan430010,China; 2.The Hong Kong University of Science and Technology,Hong Kong,China |
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| Abstract: | Some results of the stress effects on soil-water characteristics of expansive soils are presented . Based on the experimental results, the first cycle of drying and wetting hysteresis is more significant than others.The stress effects on soil-water characteristic curve of expansive soils are found to be significant. The curve of 1D (one-dimensional stress) and ISO(isotropic stress) looks more linear compared with that from routine test. Hysteresis becomes reversed for the samples under stress. |
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| Keywords: | unsaturated soils expansive soil soil-water characteristic curve stress controllable volumetric pressure plate extractor |
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