Safety Risk Evaluation of Large and Complex Bridges during Construction Based on the Delphi-Improved FAHP-Factor Analysis Method

Table 1

Decomposition of the large complex bridge construction process.

Unit project	Subproject
Foundation engineering a1	Support construction a11, pile foundation engineering a12, cofferdam construction a13, boxed construction a14, underwater concrete a15
Temporary engineering a2	Floating bridge construction a21, steel trestle construction a22, scaffold engineering a23, operation machinery a24, crane operation a25
Tower column engineering a3	Formwork construction a31, cable engineering a32, concrete pouring engineering a33
Beam slab engineering a4	Hanging basket construction a41, box girder hoisting a42, prestressed construction a43