Numerical Method of Flexible Pavement considering Moisture and Stress Sensitivity of Subgrade Soils

Table 1

Parameters and model of pavement materials.

Layer	Constitutive model	Density (kg/m^3)	Elasticity modulus (MPa)	Poisson’s ratio
Asphalt mixture	Linear	2400	1200	0.25
Base course	Linear	2300	500	0.2
Roadbed	Nonlinear	1991	UMAT	0.35
Upper embankment	Nonlinear	1971	UMAT	0.35
Lower embankment	Nonlinear	1884	UMAT	0.35