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首页> 外文期刊>European Journal of Environmental and Civil Engineering >A new approach to interpret the mechanical behaviour of unsaturated soil using effective stress and degree of saturation
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A new approach to interpret the mechanical behaviour of unsaturated soil using effective stress and degree of saturation

机译：一种使用有效应力和饱和度解释不饱和土的力学行为的新方法

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摘要

Unsaturated soil shows complex mechanical behaviours compared to saturated soil. A number of constitutive models for unsaturated soil have been proposed. However, these models suffer limitations. In this paper, a new constitutive model has been proposed in terms of effective stress and degree of saturation based on the modelling assumption about the relationship between hardening effect and degree of saturation. The proposed volume change equation gives a new explanation for the volume change of unsaturated soil. Then, an alternative approach to simulate coupled hydraulic hysteresis and the influence of the volume change on soil-water characteristic curves is suggested. Finally, this paper presents comparisons between the model simulations and experimental data. It is shown that the proposed model represents great ability to reproduce the mechanical and hydraulic response of unsaturated soil.
机译：与饱和土相比，不饱和土显示复杂的机械行为。 提出了许多用于不饱和土的组成型模型。 但是，这些模型遭受了限制。 在本文中，基于对硬化效应与饱和度之间的关系的建模假设，已经提出了一种新的构成模型。 所提出的体积变化方程给出了不饱和土体积变化的新解释。 然后，提出了模拟耦合水力滞后的替代方法和体积变化对土壤 - 水特征曲线的影响。 最后，本文介绍了模型模拟与实验数据之间的比较。 结果表明，所提出的模型代表了再现不饱和土的机械和液压响应的能力。

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