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Dunaújváros Bridge, Hungary
Steel arched superstructure steadily rising with river piers
As part of the Hungarian M8 motorway development, the route crosses the River Danube some 65 km south of Budapest. For this, an almost 1.7 km long bridge was required. Between the two foreshore bridges, with lengths of 300 m and 1,065 m respectively, a 309-metre long steel arched bridge was placed on two hull-shaped, conical river piers. These also featured recesses on the longitudinal sides and cantilevers on the heads.
Pier construction in the river itself was carried out using precast concrete elements produced on site. After pre-fabrication, the 45 m x 14 m elliptically-shaped rings were lifted by a floating crane and then fixed into position using a process similar to that when installing shaft units. The cavity was subsequently filled with underwater concrete in layers.
The remaining pier heights were completed by means of single-sided forming with ready to use pre-assembled VARIO elements mounted to the SKS climbing system in five and seven concreting sections respectively. This meant that the first two 3.15 m high concreting cycles could be carried out very efficiently. For the second section, the specified changes in inclination were taken into consideration through additional box-outs.
Together with the piers, the steel arched superstructure rose steadily upwards. Due to reasons of stability, the 309 m long and 10,600 tonne steel construction had to be mounted on both piers 4.50 m and 9.00 m respectively below the end position. From here, the bridge was pushed upwards by 4.50 m and then the next sections underneath the superstructure could be climbed. A 4.50 m height difference resulted from the planned longitudinal inclination of the superstructure which meant an additional lift on Pier 14 was required. Only then could the total height of 27 m be achieved with the last three climbing steps.
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| PERI Systems In Use |
RUNDFLEX Circular Wall Formwork
SKS Single Sided Climbing System
VARIO GT 24 Girder Wall Formwork
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Alfonz Xantus
Site Manager
“The pre-assembled PERI elements certainly made our job easier. In spite of the complicated forms, the formwork units could be quickly and easily positioned. With the customized and safe formwork concept, along with punctual deliveries of materials, we managed to save a lot of time. In addition, PERI provided us with perfect support throughout.”
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| Contractors: |
DunaUJ-HID Consortium | Vegyépszer Zrt., Budapest Hídépítő Zrt., Budapest |
| Field Service: |
PERI Budapest, Hungary and PERI Weissenhorn, Germany |
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Field Service:
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PERI GmbH, Deutschland
PERI Kft., Ungarn
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PERI Handbook 2008
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