Adam Hörnig Baugesellschaft mbH & Co. KG (AHA) won the bauma Innovation Award in the Building category for setting new standards in the construction of steel composite bridges with its PERI system.
For the steel composite superstructure of the Thulba viaduct in Germany, AHA opted for a new construction method: the carriageway slab will be constructed using PERI’s VCT cantilever track system in in-situ concrete.
“We are never satisfied with the status quo and are constantly looking for ways to improve our projects and methods. With the new cantilever bridge, we have the opportunity to do just that and advance the industry with an innovation,” said Peter Wagner, Head of Bridge and Civil Engineering at AHA.
By opting for this new construction method, AHA is emphasizing its focus on overall sustainability, safety of its employees and is consciously breaking new ground.
Watch the bridge construction method:
By using the formwork solution travelling underneath the superstructure, AHA can construct the carriageway slab without penetration. In addition, the contractor has the free access from above to reduce cycle times and complete the superstructure more quickly.
The PERI formwork solution travelling underneath does not require any formwork carriage supports. So, penetration of the carriageway slab as well as cracks in the connections of the cross frames can be avoided. The cantilever beam is suspended diagonally via anchor plates welded onto the outside of the top chord.
The flexible positioning of the suspensions along the steel structure enables interference points to be avoided, an even load distribution on the steel structure and a reduction in weight compared to the classic top travelling formwork carriage.
The system’s free access to the carriageway slab from above speeds up the reinforcement work and enables a high-quality carriageway slab surface by vibrating beams and finishing blades.
All of this means that cycle times can be optimized in terms of resources up to weekly cycles and the structure can be completed more quickly overall.
