Effect of Flexibility Ratio on Seismic Response of Cut-and-Cover Box Tunnel

Table 1

Dimensions and properties of the tunnel in the centrifuge test [9].

Properties
Size (m)	8 × 14
Thickness (m)	0.57
Material	6061 aluminium
Density (kg/m^3)	2700
Young’s modulus (kPa)	6.89E + 07
Poisson’s ratio	0.33
Racking stiffness (kN/m/m)	25,000 (2D frame analysis)