Capillary Hysteresis Internal Variable Model of Unsaturated Soils

Hu An Li; Qin Xiang Wang; Yong Xiang Yang; Ge He Zhu; Long Xin Wang; Zhan Yin Zhang

doi:10.4028/www.scientific.net/AMM.137.215

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Capillary Hysteresis Internal Variable Model of Unsaturated Soils
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 137Capillary Hysteresis Internal Variable Model of...

Capillary Hysteresis Internal Variable Model of Unsaturated Soils

Abstract:

Soil-water characteristic curve describes the relationship between suction and volumetric water content of unsaturated soils. Air-enter have great influence on the drying scanning curves while the starting points of the scanning curve were at the highly saturated range. Based on capillary hysteresis internal variable model and conventional soil-water characteristics theory of unsaturated soils, a modified model which can simulate soil-water characteristic relationship that could consider the influence of air-enter is proposed. The influence of the air-enter on the drying scanning curves while the starting points were at the highly saturated range could be considered while this model is used. Numerical calculations are carried out on several kinds of soils. The simulating results show that the modified model is able to simulate the drying scanning curves while the starting points of the scanning curve were at the highly saturated range better than the capillary hysteresis internal variable model does.

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Periodical:

Applied Mechanics and Materials (Volume 137)

Pages:

215-220

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.137.215

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Online since:

October 2011

Authors:

Hu An Li, Qin Xiang Wang, Yong Xiang Yang, Ge He Zhu, Long Xin Wang, Zhan Yin Zhang

Keywords:

Air-Entry, Hydraulic Hysteresis, Soil-Water Characteristic Curve (SWCC), Unsaturated Soil

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