Curved, cross-fall, hollow-box superstructure in sliding section procedure on 36 m high piers
The Woronora Bridge will connect the suburbs of Menai and Sutherland with the southern part of Sydney. The 500 m long construction was carried out as a hollow-box superstructure on nine piers of up to 36 m high using the sliding section procedure.
Piers: The hollow piers diminish in size towards the top. That is why VARIO units with TRIO filler pieces were combined and the adjustment of the cross-sections from cycle to cycle could be achieved without altering the VARIO units. CB 240 climbing brackets carried the load of the formwork, reinforcement and concrete pressure on the outside, safely into the previous lift. Distributing beams for transporting two platforms each saved time and crane capacity.
Hollow-box superstructure using the sliding section procedure: Two 30 m long section installations were used for constructing the superstructure. After the base slab and webs of the first section, the concreting of the roadway slab followed in the next cycle. The sections were pushed over the piers hydraulically in a weekly cycle.
Flere bilder 
