Artificial Neural Network-Based Method for Seismic Analysis of Concrete-Filled Steel Tube Arch Bridges

Table 3

Material parameter uncertainties in bridge models.

	Probability distribution	μ	COV	Range of variations
EQ345	Normal distribution	206 GPa	0.05	189–223 GPa
fQ345	Normal distribution	345 MPa	0.12	277–413 MPa
Ec50	Normal distribution	34.5 GPa	0.05	31.7–37.3 GPa
fc50	Normal distribution	32.4 MPa	0.16	23.9–40.9 MPa
εc50	Uniform distribution	3.48e − 3	0.20	3.17–3.79e − 3
Ec40	Normal distribution	32.5 GPa	0.05	29.8–35.2 GPa
fc40	Normal distribution	26.8 MPa	0.16	19.7–33.9 MPa
εc40	Uniform distribution	3.53e − 3	0.20	3.21–3.85e − 3