Study on Shear Characteristics of Interface between Frozen Soil and Pile during Thawing Process in Permafrost Area

Table 3

Empirical equations for model parameters considering hydrothermal coupling effect.

Normal stress (kPa)	Empirical expression	Coefficient of determination
100		0.9797
		0.9006
		0.9180
200		0.9124
		0.9475
		0.9293
300		0.975
		0.9591
		0.9368
400		0.9639
		0.8730
		0.9266