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

Table 1

Statistics on diseases of upper anchor head protective cover.

Number of upper anchor heads (pcs.)	Pitting corrosion		Peeling		Missing bolts
	Quantity (pcs.)	Percentage (%)	Quantity (pcs.)	Percentage (%)	Quantity (pcs.)	Percentage (%)
120	39	32.5	28	23.3	61	50.8