Shaking Table Test Study on Flexible and Rigid Immersed Tube Tunnel in Liquefiable Soil Layer

Table 2

Similitude relations and ratios of the model system.

Item	Symbol	Similitude relation	Tunnel ratio	Soil ratio
Geometry	L		1/30	1/4
Elasticity modulus	E		1/4	1/4
Mass density			5	1
Displacement	d		1/30	1/4
Acceleration	a		1.5	1
Time	t		0.149	1/2
Frequency			6.711	2
Pore water pressure	u		—	1/4
Shear wave velocity	V		—	1/2
Stress			1/4	1/4