A Three-Dimensional Model of Shield Tunnel considering Interaction of Soil and Lining

Table 3

Parameters of interface element and tunnel settlement data (mm).

Case	Interface element parameters				The tunnel settlement (mm)
	Normal stiffness (K + 4G/3)	Tangential stiffness (K + 4G/3)	Cohesive force c (C)	Friction angle ()	Ring 5	Ring 10	Ring 15	Ring 20	Ring 25
Case 1	10	10	0.5	0.5	3.29	6.82	8.5	6.74	3.29
Case 2	10	10	0.6	0.6	3.23	6.79	8.49	6.7	3.19
Case 3	10	10	0.7	0.7	3.23	6.85	8.61	6.85	3.25
Case 4	10	10	0.8	0.8	3.17	6.83	8.58	6.71	3.39
Case 5	1	1	0.7	0.7	3.21	6.76	8.47	6.69	3.21
Case 6	100	100	0.7	0.7	2.96	6.46	8.06	6.42	3.02
Case 7	200	200	0.7	0.7	2.6	5.93	7.51	6.02	2.9
Model test					1.32	6.91	10.01	7.2	1.65