Correlation Effects of Near-Field Seismic Components in Circular Metro Tunnels: A Case Study—Tehran Metro Tunnels

Table 13

Vertical acceleration values at 50% level on tunnel lining in g.

Record	Load combination 1 to 5	Load combination 6 to 10	Load combination 11 to 15
Tabas	0.141	0.140	0.144
Cape	0.584	0.573	0.596
Lomaperieta	0.614	0.612	0.619
Northridge	0.254	0.255	0.287