Experimental Study on Seismic Performance of Prefabricated Utility Tunnel

Table 1

Similarity laws of the model structure.

Item	Physical parameters	Similarity relation	Ratio of similarity
Geometry relation	Length		1/10
	Displacement		1/10
Material relation	Strain		1
	Stress		1/4
	Elastic modulus		1/4
	Density		10/4
Dynamic relation	Time
	Frequency
	Acceleration		1