Research Article
Application of BP Neural Network Improved by Fireworks Algorithm on Suspender Damage Prediction of Long-Span Half-Through Arch Bridge
Table 2
Corrosion condition of anchor head.
| | Anchor head number | Damage type | | Condensation inside the protective cover and on the top of the anchor cup cover | Water accumulation in anchor cup | Rust degree of anchor cup | Volatility of butter | Rust degree of steel wire pier head |
| | Upstream upper anchor head | UT3 | Not have | Not have | Mild | Serious | Whitening | | UT4 | Have | Many | Mild | Serious | Mild | | UT7 | Have | Many | Mild | Serious | Mild | | UT8 | Not have | Not have | Mild | Serious | Whitening | | UT10 | Have | Many | Mild | Serious | Mild | | UT14 | Have | Many | Mild | Serious | Mild | | UT20 | Have | Few | Mild | Serious | Whitening | | UT26 | Have | Many | Mild | Serious | Mild | | UT30 | Have | Many | Mild | Serious | Mild | | UT38 | Have | Few | Mild | Serious | Whitening | | UT41 | Have | Many | Mild | Serious | Mild | | UT46 | Have | Many | Mild | Serious | Mild | | UT47 | Not have | Not have | Mild | Serious | Whitening | | UT51 | Have | Many | Mild | Serious | Mild | | UT54 | Not have | Not have | Mild | Serious | Whitening | | UT59 | Not have | Not have | Mild | Serious | Whitening |
| | Downstream upper anchor head | DT3 | Not have | Not have | Mild | Serious | Whitening | | DT4 | Have | Many | Mild | Serious | Mild | | DT6 | Not have | Not have | Mild | Serious | Whitening | | DT10 | Not have | Not have | Mild | Serious | Whitening | | DT14 | Have | Few | Mild | Serious | Whitening | | DT20 | Have | Few | Mild | Serious | Whitening | | DT21 | Have | Many | Mild | Serious | Mild | | DT27 | Have | Many | Mild | Serious | Mild | | DT31 | Have | Many | Mild | Serious | Mild | | DT36 | Have | Many | Mild | Serious | Mild | | DT40 | Have | Many | Mild | Serious | Mild | | DT44 | Have | Many | Mild | Serious | Mild | | DT48 | Have | Few | Mild | Serious | Whitening | | DT51 | Not have | Not have | Mild | Serious | Whitening | | DT55 | Not have | Not have | Mild | Serious | Whitening | | DT58 | Have | Many | Mild | Serious | Mild |
| | Upstream lower anchor head | UB1 | Not have | Not have | Mild | Serious | Whitening | | UB30 | Have | Many | Mild | Serious | Mild | | UB60 | Have | Few | Mild | Serious | Whitening |
| | Downstream lower anchor head | DB1 | Have | Not have | Mild | Serious | Whitening | | DB30 | Have | Many | Mild | Serious | Mild | | DB60 | Have | Few | Mild | Serious | Whitening |
|
|