Deformation Analysis of Expansive Soils Induced by Increased Humidity Based on the Theory of Humidity Stress Field

The theory of humidity stress field is applied to analyze the deformation of expansive soils induced by increased humidity,and related parameters can be determined through the free swelling test and the swelling test under load.According to the similarities between humidity stress field and temperature stress field,the deformation of expansive soils can be calculated using the function of heat analysis in ANSYS.And the numerical simulation on the swelling test with load has proved the validity of adopting the theory of temperature stress field to simulate the humidity stress field.