Large-Scale Shaking Table Test of Seismic Response Laws for a Shallow Double-Arch Tunnel under Unsymmetrical Pressure with a Damping Layer

Table 1

Parameters of the shaking table.

Table size	4.0  m × 4.0  m
Maximum load	30t
Working frequency	0.1–50 Hz
Maximum displacement	X- and Y-direction	250 mm
	Z-direction	160 mm
Maximum acceleration	X- and Y-direction	±1.0 g
	X- and Y-direction	±1.6 g