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不同制样方法非饱和土的持水特性研究

孙德安, 高游

孙德安, 高游. 不同制样方法非饱和土的持水特性研究[J]. 岩土工程学报, 2015, 37(1): 91-97. DOI: 10.11779/CJGE201501010
引用本文: 孙德安, 高游. 不同制样方法非饱和土的持水特性研究[J]. 岩土工程学报, 2015, 37(1): 91-97. DOI: 10.11779/CJGE201501010
shu
SUN De-an, GAO You. Water retention behaviour of soils with different preparations[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(1): 91-97. DOI: 10.11779/CJGE201501010
Citation: SUN De-an, GAO You. Water retention behaviour of soils with different preparations[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(1): 91-97. DOI: 10.11779/CJGE201501010
shu

不同制样方法非饱和土的持水特性研究  English Version

  • 上海大学土木工程系,上海 200072

基金项目: 国家自然科学基金项目（51178052,50808020,51478044）
详细信息
    作者简介:

    孙德安(1962- ),男,教授,主要从事土力学的研究。E-mail: sundean@shu.edu.cn。

  • 中图分类号: TU411

Water retention behaviour of soils with different preparations

  • Department of Civil Engineering, Shanghai University, Shanghai 200072, China

摘要

    摘要
  • 摘要: 以一种黏土为研究对象,对其压实样和预固结样进行一系列的持水特性试验和压汞试验,研究了不同制样方法对持水特性和内部孔隙结构分布的影响及在不同各向等应力作用下的持水特性。结果表明：预固结样的内部孔隙分布为单峰孔隙结构,孔隙大小分布较为均匀;压实样则为双峰孔隙结构,但压实样在20 kPa的竖向压力作用下浸水饱和后,其内部孔隙分布变为单峰孔隙结构。此外,在相同各向等应力条件下初始孔隙比相近的预固结样和压实样的持水特性试验结果表明,预固结样的进气值要比压实样的大,其原因是前者孔隙分布较均匀;其次,受各向等应力越大的预固结样其进气值越大。最后,利用压汞试验的结果对预固结样和压实样的脱湿段的持水曲线进行了推算,并与实测值进行了对比。
    Abstract: A series of water retention tests and mercury intrusion porosimetry tests on a clay are performed to investigate the influence of different specimen preparations on water retention behaviour and its pore-size distribution as well as the influence of different isotropic stresses on water retention behaviour. The experimental results show that pre-consolidated specimens exhibit a unimodal pore-size distribution, and unsaturated compacted specimens usually have a double-porosity microstructure, while its microstructure can change due to saturation at the applied pressures of 20 kPa. Under the same initial void ratio and isotropic stress, the pore sizes of pre-consolidated specimens exhibit a uniform distribution, so they have higher air-entry value than the compacted specimens. Under the same initial void ratio of pre-consolidated specimens, the air-entry value increases with the increasing isotropic stress. Finally, based on the results of the mercury intrusion porosimetry tests, a method for predicting the water retention curve of pre-consolidated and compacted specimens during drying is proposed, and the predicted results are compared with the measured values.
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    • 参考文献(14)
  • [1] 陈正汉. 非饱和土与特殊土力学的基本理论研究[J].岩土工程学报, 2014, 36(2): 201-272. (CHEN Zheng-han. On basic theories of unsaturated soils and special soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(2): 201-272. (in Chinese))
    [2] VANAPALLI S K, FREDLUND D, PUFAHL D E. The influence of soil structure and stress history on the soil-water characteristics of a compacted till[J]. Géotechnique, 1999, 49(2): 143-59.
    [3] THU T M, RAHARDJO H, LEONG E C. Soil-water characteristic curve and consolidation behavior for a compacted slit[J]. Canadian Geotechnical Journal, 2007, 44: 266-275.
    [4] WHEELER S J, SIVAKUMAR V. An elasto-plastic critical state framework for unsaturated soil[J]. Géotechnique, 1995, 45(1): 35-53.
    [5] SUN D A, SHENG D, SLOAN S W. Elastoplastic modelling of hydraulic and stress-strain behaviour of unsaturated soils[J]. Mechanics of Materials, 2007, 39(3): 212-221.
    [6] WANG Q, PUFAHL D E, FREDLUND D G. A study of critical state on an unsaturated silty soil[J]. Canadian Geotechnical Journal, 2002, 39(1): 213-218.
    [7] SUN D A, MATSUOKA H, XU Y F. Collapse behavior of compacted clays in suction-controlled triaxial tests[J]. Geotechnical Testing Journal, 2004, 27(4): 362-370.
    [8] GB5007—2011建筑地基基础设计规范[S]. 北京: 中国建筑工业出版社, 2011. (GB5007—2011 Code for design of building foundation[S]. Beijing: China Architecture & Building Press, 2011. (in Chinese))
    [9] 张平, 房营光, 闫小庆, 等. 不同干燥方法对重塑膨润土压汞试验用土样的影响试验研究[J]. 岩土力学, 2011, 32(1): 388-391. (ZHANG Ping, FANG Ying-guang, YAN Xiao-qing. Study of different dry methods for drying remolded bentonite sample with mercury intrusion test[J]. Rock and Soil Mechanics, 2011, 32(1): 388-391. (in Chinese))
    [10] DELAGE D, AUDIGUIER M. Microstructure of a compacted silt [J]. Canadian Geotechnical Journal, 1996, 33: 154-156.
    [11] LI X, ZHANG L M. Characterization of dual-structure pore size distribution of soil[J]. Canadian Geotechnical Journal, 2009, 46: 129-141.
    [12] KODIKARA J, BARBOUR S L, FREDLUND D G. Change in clay structure behaviour due to wetting and drying[C]// Proceedings of 8th Australian-Zealand Conference on Geomechanics. Hobart, 1999: 179-185.
    [13] FREDLUND D G, RAHARDJO H. Soil mechanics for unsaturated soils[M]. Hoboken: John Wiley & Sons, Inc, 1993.
    [14] LIKOS W J, LU N. Hysteresis of capillary stress in unsaturated granular soil[J]. Journal of Engineering Mechanics, 2004, 130(6): 646-655.
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  • 被引次数: 12
出版历程
  • 收稿日期:  2014-03-27
  • 发布日期:  2015-01-19

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