中文摘要：

为了模拟非饱和土的水力、力学特性在多次降雨、蒸发过程中的变化特性,本文以传统域模型的基本原理为基础,推到得到了一个能够模拟SWCC滞后性的计算模型,该模型计算方法简单,易于通过程序实现,且通过与试验数据和其他模型的计算结果对比,验证了该模型的合理性,同时,这个模型可为研究在复杂吸力变化状态下非饱和土的渗流特性、强度特性以及本构模型的研究打下一定的基础。

英文摘要：

This paper simulates the variation law of mechanical and hydraulic behavior unsaturated soils in the process of repetitively raining or evaporation.It establishes a hysteresis model on the basis of the basic principle of traditional domain model.The model is simple and can be easily adapted to programming.It is compared to some experimental data and other hysteresis models.The reliability of the proposed model is validated.The result demonstrates its good applicability in practice.Meanwhile,this model can be used as a basis in the research of the permeability and strength characteristic,together with the constitutive theories for unsaturated soils.