Self-climbing formwork unfolds

Peri has launched its self-climbing formwork on the construction of the M0 North Danube Bridge in Budapest.

Peri's self-climbing formwork is being used on the North Danube Bridge in Budapest.
Peri's self-climbing formwork is being used on the North Danube Bridge in Budapest.

Peri has launched its self-climbing formwork on the construction of the M0 North Danube Bridge in Budapest. The bridge design consists of two 100m high concrete reinforced pylons which will connect the M3 motorway with the main artery road 11 and in future will lead the new route safely across the Danube.

The bridge is 1862m long, divided into five sections on 28 supports. This type of construction has never been used before in Hungary. The consortium of contractors, Hidepito Zrt. Und Strabag Zrt, has benefited from Peri's formwork and scaffolding knowledge and products.

The construction consists of two abutments, four joint supports, seven flood plain piers and the two A-shaped pylons.

For construction of the pylons with pre-stressed hollow beam cross-sections, crane-independent Peri ACS self-climbing technology and Peri Vario girder wall formwork are used.

This system combination has been used before on over 300 high-rise buildings across the world, for its reliability and cost-effectiveness.

A total of 29 castings were made for each pylon, with varying concreting heights between 2.55m and 4.07m. The pylon supporting members are inclined towards the roadway at an angle of under 13.3 degrees, and have a range of different cross sections.

For the forward and reverse-inclined external walls, Peri ACS V was used as climbing scaffold, with continually adjusting brackets to ensure all work is done at horizontal level. For the remaining external wall surfaces, ACS R brackets were used because of their suitability to laterally inclined climbing.

Internal scaffolding is only required up to 60m on this project, crane climbed internal platforms are then used for cost effectiveness. Guardrails and weather-resistant sheeting is in place to keep conditions safe, and protected from the weather.

A bridge connects the two pylons, meaning a lift is only required on one of the pylon legs, and personnel are able to move from one pylon to the other easily.

The Vario girder wall formwork has been designed for a concrete pressure of 50kN/m2 and was planned in advance by Peri engineers for each section. Adjustment work for the formwork can be carried out on the platforms.

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