Seismic Test and Simulation of Spring Vibration Isolated Foundation for Turbo-Generator

Table 4

Experiment parameters.

Parameter		Value
Time step (s)		0.00125
Loading speed (s)		10.0
Equivalent mass (kg)		26728
Vertical preload (kN)		1680
Damping ratio (/)		0.05
Initial stiffness (10^3 kN/m)	Transverse	48.4
	Longitudinal	50.0