Application of BP Neural Network Improved by Fireworks Algorithm on Suspender Damage Prediction of Long-Span Half-Through Arch Bridge

Table 4

Calculation results of internal forces of main arch ribs under dead load.

Control section	Axial force (kN)		Bending moment (kN·m)		Deflection (mm)
	Calculation I	Calculation II	Calculation I	Calculation II	Calculation I	Calculation II
Arch foot	44132	43986	−44891	−43527	0	0
L/4 section (top chord)	17789	17861	27	27	65	63
L/4 section (bottom chord)	16758	16903	151	162	65	63
L/2 section (top chord)	17137	17242	274	279	107	103
L/2 section (bottom chord)	14459	14584	315	308	107	103