Experimental and Numerical Simulation Study of Water Infiltration Impact on Soil-Pile Interaction in Expansive Soil

Table 2

Parameters used in the numerical simulation.

Variable	Units	Description	Value
Nanyang soil
	m/s^2	Gravity	9.82
	kg/m^3	Density	1550
		Specific gravity	2.61
		Porosity	0.34
	Pa	Young’s modulus
		Poisson’s ratio	0.4
	m/s	Permeability
		Saturated volumetric water content	0.41
		Residual volumetric water content	0.1
	m	Pressure head at upper boundary	0.15
	Pa∙s	Dynamic viscosity
		Biot-Willis coefficient	1
		Coefficient of friction	0.5
		Moisture absorption-induced strain	0.0214
	kg	Soil saturated mass	65.1
	kg	Soil initial mass	48.2
	m^3	Soil initial volume	0.0216
	m^3/kg	Coefficient of hygroscopic swelling
	m^2/s	Diffusion coefficient
Pile
	kg/m^3	Density	2700
	Pa	Young’s modulus
		Poisson’s ratio	0.3
Sand
	Pa	Young’s modulus
		Poisson’s ratio	0.3
	kg/m^3	Density	2650
	m^2	Permeability	2.95-6
		Porosity	0.42
		Biot-Willis coefficient	1
Water
	kg/m^3	Density	1000
	m∙s^2/kg	Compressibility
	Pa∙s	Dynamic viscosity