Progressive Collapse of RC Box Girder Bridges due to Seismic Actions

Table 4

Seismic ground motions.

Earthquake	Year of occurrence	Record station	PGA in X-Dir. (g)	Moment magnitude	Original duration	Reduced duration
Kobe	Jan 1995	KJMA	0.834	6.9	90	20
Chi-Chi	Sep 1999	CWB	0.63	7.6	90	15
Northridge	Jan 1994	CDMG	1.585	6.7	40	15