Soil-water characteristic curve for unsaturated loess considering temperature and density effect

WANG Tie-hang; LU Jing; YUE Cai-kun

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Soil-water characteristic curve for unsaturated loess considering temperature and density effect

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- Soil-water characteristic curve for unsaturated loess considering temperature and density effect
- Vol. 29, Issue 1, (2008)
- 作者机构：
  
  西安建筑科技大学土木工程学院,西安,710055
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441
- Online First：18 July 2013，
  
  Published：2008
- 稿件说明：
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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]. 2008, 29(1).
DOI：

WANG Tie-hang, LU Jing, YUE Cai-kun. Soil-water characteristic curve for unsaturated loess considering temperature and density effect[J]. 2008, 29(1). DOI：

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。

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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