Seismic Fragility Analysis of Bridge Group Pile Foundations considering Fluid-Pile-Soil Interaction

Table 2

FEM model validation of periods and seismic responses.

FEM model	Vibration period (s)			Seismic response (subjected to FF1)
	1^st mode	2^nd mode	3^rd mode	SA (m)	Mc-c
OpenSees model	3.64	3.35	1.51	2.82	0.0014
SAP2000 model	3.60	3.32	1.44	2.73	0.0014