Vertical Seismic Effect on the Seismic Fragility of Large-Space Underground Structures

Table 3

Soil physical properties for site II.

Soil layer	Thickness (m)	Soil type	Unit weight (kg·m^−3)	Shear wave velocity (m·s^−1)	Poisson ratio	Cohesion (kPa)	Friction angle (°)
1	3.00	Fill	2000	152	0.30	10.0	23.8
2	4.00	Silty clay	2000	170	0.30	13.4	12.0
3	9.00	Clay	2000	258	0.30	10.0	25.0
4	6.00	Silt	2000	300	0.30	10.0	25.0
5	4.00	Silt	2000	320	0.30	0.0	32.0
6	3.00	Clay	2000	400	0.30	10.0	25.0
7	2.00	Round gravel	2000	350	0.30	0.0	35.0
8	8.00	Medium-fine sand	2000	420	0.30	0.0	34.0
9	9.00	Clay	2000	400	0.30	10.0	25.0
10	18	Rock	2000	550	0.30	—	32