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

Table 5

Soil physical properties for site IV.

Soil layer	Thickness (m)	Soil type	Unit weight (kg·m^−3)	Shear wave velocity (m·s^−1)	Poisson ratio	Cohesion (kPa)	Friction angle (°)
1	1.00	Fill	1890	74	0.40	10.0	23.8
2	5.40	Silty clay	1850	87	0.35	13.4	12.0
3	11.26	Silty clay	1830	110	0.38	10.0	23.8
4	26.40	Sandy clay	1820	220	0.35	10.0	25.0
5	7.40	Clay	2040	195	0.35	10.0	25.0
6	18.54	Fine sand	1935	225	0.30	0.0	32.0