Category: Tenders
Services: Technical assistance during tender phase
Period: March 2020
Customer: Freyssinet international
Sidney, Australia
Sydney Gateway Bridges
Optimization of erection and launching phases.
The Sidney Gateway project provides for the improvement road and rail links for sustainability from Sydney airport terminals .
The object of the project was assistance with preparation of the technical tender file relative to the bridges SB21 (A & B) and SB51 (A & B).
The SB51 bridges have a bowstring arch structure on a single 105m-span with box – section main beams, I-section diaphragms and a longitudinally oriented concrete slab. The bridges will be entirely assembled on site and then launched by means of strand-jacks, sliding supports and a launching nose.
The SB21 bridges wave a deck made of box-section beams in a mixed steel-concrete section. The beams are connected by means of trussed diaphragms. The scheme static is that of a continuous beam over several supports on spans from 30 to 50m. The first spans will be launched by means of strand jack, while the final part will be erected by means of cranes.