Experimental and Numerical Study on the Behavior of Energy Piles Subjected to Thermal Cycles

Table 1

Material parameters of piles.

	Model pile	Concrete pile
Density, ()	2000	2500
Thermal conductivity, ()	0.9	2.0
Specific heat, ()	1050	970
Linear thermal expansion coefficient, ()	24.5	10
Elastic modulus, ()	4	30
Poisson’s ratio,	0.2	0.18