| 考虑温度和密度影响的非饱和黄土土-水特征曲线研究 |
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| 引用本文： | 王铁行,卢靖,岳彩坤.考虑温度和密度影响的非饱和黄土土-水特征曲线研究[J].岩土力学,2008,29(1):1-5. |
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| 作者姓名： | 王铁行 卢靖 岳彩坤 |
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| 作者单位： | 西安建筑科技大学,土木工程学院,西安,710055 |
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| 基金项目： | 国家自然科学基金
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陕西省自然科学基金 |
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| 摘 要： | 取扰动黄土进行试验研究,测试得到了不同密度和温度黄土土样的土-水特征曲线.试验资料揭示出:密度变化引起基质吸力的变化非常显著.相对而言,温度变化引起基质吸力的变化不显著.对于一定含水率的土样,温度变化引起的吸力变化值在高含水率时较小,可以忽略不计,而在低含水率时较大;温差越大,吸力变化越大.进一步基于试验资料的分析,得到了考虑密度和温度影响的土-水特征曲线的表达式,并通过计算和测试结果的对比分析,验证了表达式的合理性.
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| 关 键 词： | 黄土 温度 基质吸力 密度 含水率 温度影响 密度变化 非饱和黄土 水特征曲线 研究 effect density temperature loess 合理性 验证 测试结果 计算 表达式 分析 温差 高含水率 吸力变化 温度变化 基质吸力 |
| 文章编号： | 1000-7598-（2008）01-0001-05 |
| 收稿时间： | 2006-05-26 |
| 修稿时间： | 2006年5月26日 |
Soil-water characteristic curve for unsaturated loess considering temperature and density effect |
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| WANG Tie-hang,LU Jing,YUE Cai-kun.Soil-water characteristic curve for unsaturated loess considering temperature and density effect[J].Rock and Soil Mechanics,2008,29(1):1-5. |
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| Authors: | WANG Tie-hang LU Jing YUE Cai-kun |
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| Institution: | School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China |
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| Abstract: | Soil-water characteristic curve for unsaturated loess considering temperature and density effect is studied by test. The test data show that the variation of soil density, compared with variation of soil temperature, can result in great change of soil-water characteristic curve. For loess sample in certain water content, the change of matrix suction resulting from variation of soil temperature is less in bigger water content, and is more in lower water content. The more is the variation of soil temperature, the more is the change of matrix suction. After analyzing the test data, taking the soil density and temperature into account, the formula is obtained to determine the matrix suction of unsaturated loess. The test and calculated data verify the reliability of the formula. |
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| Keywords: | loess temperature matrix suction density water content |
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