Experimental and Numerical Study on the Earthquake Damage of Spherical Bearings for Chinese High-Speed Railway Bridge

Table 4

Test scenarios in sequence.

Test scenario	Input earthquake	Earthquake direction	Experimental PGA scale (g)
1	White noise excitation		0.05	0.05
2	0.15 g (PGA) earthquake	El-Centro (xp)	0.45	N.A.
3		El-Centro (yp)	N.A.	0.45
4		El-Centro (xp + ys)	0.45	0.38
5		El-Centro (xs + yp)	0.38	0.45
6	White noise excitation		0.05	0.05
7	0.20 g (PGA) earthquake	El-Centro (xp)	0.60	N.A.
8		El-Centro (yp)	N.A.	0.60
9		El-Centro (xp + ys)	0.60	0.51
10		El-Centro (xs + yp)	0.51	0.60
11	White noise excitation		0.05	0.05
12	0.32 g (PGA) earthquake	El-Centro (xp)	0.96	N.A.
13		El-Centro (yp)	N.A.	0.96
14		El-Centro (xp + ys)	0.96	0.82
15		El-Centro (xs + yp)	0.82	0.96
16	White noise excitation		0.05	0.05
17	0.38 g (PGA) earthquake	El-Centro (xp)	1.14	N.A.
18		El-Centro (yp)	N.A.	1.14
19		El-Centro (xp + ys)	1.14	0.97
20		El-Centro (xs + yp)	0.97	1.14
21	White noise excitation		0.05	0.05