The Effective Stress Formula Depend on the Void Water in Unsaturated Soils and Its Parameters' Quantification
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摘要: 注意到土水特征曲线的迟滞环现象,根据对孔隙水形态不同则吸力效果不同的分析,提出了非饱和土新的有效应力公式,并对公式中的参数给出了求解方法。利用该公式可以较合理的解释土的湿陷和膨胀现象,在土饱和时还可退化成饱和土的有效应力公式。Abstract: Considering the hysteresis of water's retention curve,proposing a new formula of the effective stress in unsaturated soils based on the analysis that the effect of suction is different by the form of void water,providing a method to calculate the parameters in this formula. The formula can explain the collapse behavior and swelling behvior of unsaturated soils and can degenerate to the effective stress formula in saturated soils when the soil is saturated.
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Key words:
- unsaturated soils /
- the effective stress /
- the water retention curve /
- suction /
- bulk water /
- meniscus water
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