Model Test Study on the Influence of Train Speed on the Dynamic Response of an X-Section Pile-Net Composite Foundation

Table 2

Train speed and frequency.

Actuator frequency	Two peak period (s)	Corresponding train speed (km/h)	Two trough periods (s)	Carriage cycle (s)
18	0.056	160	0.173	0.556
22	0.045	200	0.142	0.455
28	0.036	250	0.111	0.357
33	0.030	300	0.095	0.303
39	0.026	350	0.080	0.256