Work on a European transport hub:
Renovation of Felperbrücke – A13 Brenner motorway
Felperbrücke is a girder bridge with seven sections, and a total span of 395 m. The bridge superstructure comprises two single-celled pre-stressed concrete hollow boxes.
A seamless carriageway slab joins the hollow boxes at the centre, creating a continuous supporting structure with a total width of 24.20 m.
The surface of the carriageway slab is not sealed after construction.
Job Report – Factsheet
- Project: Renovation of Felperbrücke – A13 Brenner motorway / Austria
- Contractor: Alpen Straßen AG (today part of ASFINAG GROUP)
- Client: ARGE renovation Inn Canal
- Type of operation: Partial demolition of the cantilever for the installation of an edge reinforcement beam | Removal of chloride-damaged concrete on the bridge deck | Substrate preparation for the sealing work
- Special feature: Very hard concrete | Very short construction phases | Coupling of the high-pressure units
The renovation works were completed between March and September 2003 in three construction phases, with two-way traffic throughout on the Brenner motorway.
They posed great challenges to man & machine due to the tight and penalised interim and final deadlines.
As part of the renovation works, the extremities of the cantilever slabs were removed across a width of 35 cm in both traffic directions (whilst preserving the existing reinforcement) in order to install an edge reinforcement beam made of high-quality low-shrink reinforced concrete. The cutting had to be carried out in 70 cm subsections in order to install anchor plates for the trusses of the steel inspection gangways.
Fact: Removal of partial demolition of 100 m³ cantilever plate (25 cm thick), partial demolition of 2000 m² carriageway slab (3.5 cm thick), 10,000 m² surface preparation