Seismic Acceleration Spectrum of Ground Surface under Urban Subway Tunnels with Circular Cross Sections in Soil Deposits Based on SSI

Table 1

Modulus of elasticity versus depth for Dehli subway soil [32].

Depth (m)	Thickness (m)	Modulus of elasticity (kpa)
0–10	10	7500
10–20	10	15000
20–35	15	30000
35–50	15	40000
50–60	10	50000