Flexible solution for a complex bridge construction
Highway SS554 has significantly eased traffic congestion in the island capital Cagliari in the south of Sardinia. An important feature of the infrastructure project was the 85 m long Ponte Strallato cable-stayed bridge. The bridge pylon is shaped liked an upside down letter Y but has no straight edges and surfaces as well as being inclined backwards in a longitudinal direction.
The varying cross-sectional shape required a flexible formwork solution, which was developed by PERI´s Italian engineers using SKSF 240 climbing scaffold and VARIO GT 24 girder wall formwork. The rentable climbing formwork combination was cost-effective and could be optimally adapted to the set geometry and load.
The complex form of the vertex arch demanded a special solution: supported on project-specific steel brackets, a raised formwork construction comprised of PERI system components ensured safe and accurate construction. VARIO could be used flexibly here as well. The top section of the pylon was scaffolded on all sides with PERI UP Rosett so that the steel cables for the bridge suspension could be safely positioned.
“The bridge pylon with its arch-shaped geometry and continually variable ground plan dimensions required a great deal of flexibility. With the
selected PERI formwork systems, we were able to optimize the individual construction phases and achieved high standards of quality and safety.”
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