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土水特征曲线反映了土的含水量和基质吸力的关系。试验表明,土水特征曲线具有明显的滞后性。本文以传统的域模型的基本原理为基础,推导得到了一个能够模拟SWCC滞后性的计算模型,该模型计算简单。通过与试验数据进行对比,验证了该模型的合理性。该方法可较好地反映非饱和土水特征曲线的滞后现象,根据具体的干湿过程改变积分路径,即可实现扫描线的解算。
The soil water characteristic curve reflects the relationship between soil water content and substrate suction. Experiments show that the soil water characteristic curve has obvious hysteresis. Based on the basic principle of traditional domain model, this paper deduces a calculation model that can simulate SWCC lag, which is simple to calculate. By comparing with the experimental data, the rationality of the model is verified. This method can well reflect the hysteresis of unsaturated soil-water characteristic curve, and according to the specific dry-wet process, change the integral path to realize the solution of the scanning line.