Forth Replacement Crossing / Queensferry Crossing Bridge
Six traveller steel frames are being used to lift bridge decks from barges into position at the construction of the world wide longest three-tower cable-stayed bridge over the Firth of Forth in Scotland.
Hebetec provided independently working strand jack- and hydraulic systems and control units for the liftings and traveller moving.
Hebetec further supervised installation and executed the system operation.
The lifting system had to reach high lowering and lifting speeds to comply with the local conditions, as well as the control system needed to be executed with pressure- and distance variation monitoring. Job Report
|Total bridge length||2'700 m|
|Bridge decks||109 pcs|
|Weight per deck||to 784 t|
|Total segment length||1'692 m|
|Lowering speed||35 m/h|
|Lifting speed||20 m/h|
|H-580 with CP||12 pcs|
|Double acting cylinders||72 pcs|
|Independent control systems||6 pcs|