Random Vibration Analysis of Train Moving over Slab Track on Bridge under Track Irregularities and Earthquakes by Pseudoexcitation Method

Table 2

Parameters of earthquake for different site conditions.

Parameter	Unit	Site classification
		Type I	Type II	Type III
	rad/s	25.13	17.95	13.96
	—	0.64	0.72	0.80
	s	0.5	0.8	1.2
	s	5.5	7.0	9.0
	—	0.45	0.35	0.25
Duration of acting time of earthquake	s	6.69	8.41	10.92
for DBGA = 0.15 g	cm^2/s^3	275	364	440
for DBGA = 0.30 g	cm^2/s^3	1099	1456	1759
for DBGA = 0.40 g	cm^2/s^3	1780	2359	2849

DBGA is the design basic acceleration of ground motion.