Effects of Equipment-Structure-Soil Interaction on Seismic Response of Equipment and Structure via Real-Time Dynamic Substructuring Shaking Table Testing

Table 2

Characteristic parameters of the soil.

Order of the Ritz vector	Order of complete mode	Frequency (Hz)	Mass participation factor
1	1	1.83	0.59
2	6	3.72	0.075
3	11	5.08	0.036
60	495	29.43	6.12 × 10^−4
Sum			0.95