Semianalytical Solution and Parameters Sensitivity Analysis of Shallow Shield Tunneling-Induced Ground Settlement

Table 1

Physical and mechanical parameters of foundation soils.

Number	Name	Weight/ kN/m^3	Sr			Standard penetration/N	Fast shear test		UU		Modulus /MPa	Poisson’s ratio	Layer height/m
							Cohesion c/kPa	Internal friction angle/°	Cohesion c/kPa	Internal friction angle/°
①	Miscellaneous fill	16.6	/	/	/	/	10	8	10	5	/	/	2.4
③1③	Silt-silty clay	19.3	78.12–96.3	0.61–0.77	7.2–11.8	13–10	30.8	15.7	26.7	17.2	6.6–12.7	0.30	5.4
④	Silty clay	20.1	96.5	0.59	11.9	10	35	9	30	15	5.5–10	0.31	4.0
⑥	Silty clay	19.8	96.2	0.71	13.3	15	46	15	30	15	8.3–11.9	0.29	4.4
⑥	Silt	20.2	95.3	0.58	8.4	17	33	28	15	15	9.3–17.1	0.30	6.0
⑦1⑦	Silty sand	19.9				54–48	0	32.8			30–40	0.28	3.6
⑦	Rounded gravel	21.1					0	40			60	0.25	1.4
⑧	Silty clay	19.7	96.4	0.73	12.9	25	54	5			9.2–13.6	0.30	5.0
⑨	Silty fine sand	20.6				52	0	30			35	0.27	1.6
⑩	Silty clay	19.7					20	20			8.7–13.1	0.29	6.2