Numerical Simulation and Application of Zero-Thickness Contact Surface Element with Variable Shear Stiffness on Pile Foundation

Table 2

Model parameter values under different normal stresses obtained by fitting.

Normal stress (kPa)	χ	(mm)	D	C	Correlation coefficient R^2
22	12.5	2.5	0.3648	3.1236	0.9991
55	7.7	2.5	0.4979	3.6888	0.9983
88	6.5	2.5	0.4610	3.4120	0.9992
107	7.8	2.5	0.4350	3.3272	0.9993