The parameters fitness of SWCC considering consolidation stress by GA

Soil-Water Characteristic Curve (SWCC) is one of the most important parameters of unsaturated soils. It plays an important role in theoretical research and practical application. For the convenience of practical application, some models are presented, such as Gardner model, V-G model, etc. Recent experimental results show that besides water content, the consolidation stress has influence on SWCC either, while most of the models did not consider this factor. In this paper, based on the experimental results of SWCC under different consolidation stresses, GA is chosen to fit the parameters of a specific curve which is developed from exponential attenuation function. With the definition of the parameters, a SWCC model which considering different consolidation stresses is put forward. The fitness results compared with previous research according to experimental results shows higher accuracy.