Seismic Vulnerability Analysis of Multispan Continuous Bridges Subjected to Mainshock-Aftershock Earthquake Sequences

Table 2

Calculation parameters of the damage index of piers.

Number of pier	(m^−1)	ϕy (m^−1)	Δcy1 (m)	Δcy (m)	Δc4 (m)
1^#	0.001010	0.001211	0.0315	0.0378	0.0468
2^#	0.001039	0.001250	0.2299	0.2766	0.2934
3^#	0.001038	0.001249	0.2128	0.2560	0.2678
4^#	0.001002	0.001200	0.0281	0.0336	0.0417
5^#	0.001029	0.001235	0.0939	0.1128	0.1368