The altogether 1.9 km long motorway bridge over the Danube rests on 28 piers in the foreland areas - central element is the 590 m long cable-stayed bridge over the major distributary with a 300 m span between the two impressive pylons. Up to the reinforced concrete tip at a height of 100 m, a total of 29 casting segments with variable concreting heights between 2.55 m and 4.07 m had to be mastered. The pylon supporting members are inclined towards to the centre of the roadway at an angle of under 13.3° and have a range of different cross-sections. Beginning with external dimensions of 5.00 m x 4.11 m on the bottom plate, the members taper up to 3.50 m x 4.11 m in the area of the cable stay connections. The internal dimensions are also reduced in the longitudinal direction by 0.80 m.
For the forward and reverse-inclined external walls, PERI ACS V was used as climbing scaffold. Through the continuously adjustable brackets, the working platforms were always in a horizontal position which meant work could be carried out safely and ergonomically. For the remaining external wall surfaces, ACS R brackets were selected which proved their suitability once again on this construction site for laterally-inclined climbing. Guardrails and weather-resistant sheeting were installed on the external scaffolding to totally enclose the five working levels, positioned one on top of each other. This resulted in optimal working safety conditions and provided ideal protection against the weather.
“The safety and reliability of the PERI ACS self-climbing formwork is of particular importance in such a project. With help of the VARIO customised formwork, we could complete the varying cross-sections of the pylons on schedule and with great accuracy.”
Contractors:
M0 North Danube-Bridge Consortium, Hídépítő Zrt., STRABAG Zrt.
More Images 
