Seismic Vulnerability Evaluation of a Three-Span Continuous Beam Railway Bridge

Table 6

Probabilistic seismic demand model of bridge components.

Component name	Regression parameter
	A	B
1# pier bottom section	1.509	−0.1089	0.38
2# pier bottom section	1.331	−1.0447	0.47
3# pier bottom section	1.514	−0.1177	0.43
4# pier bottom section	1.361	−1.446	0.48
1# pier bearing	0.865	0.859	0.35
3# pier bearing	0.79	0.661	0.37
4# pier bearing	0.967	0.922	0.40