Parapet construction of 130 m per week across the Danube
Parallel to the existing bridge structure, the over 2.2 km long Danube crossing near Beska will be complimented by a so-called twin bridge. On the southern side, a 180 m long foreland bridge is joined to the 540 m long main bridge which is supported on three river piers. The almost 1,500 m long approach bridge to the north also crosses a floodplain of the Danube river.
Project-related formwork concept
For the Danube bridge, Serbian and German PERI engineers worked closely together with the Alpine Bau construction team to develop a common formwork concept which envisaged the use of the VARIOKIT parapet carriage which was to be operated from above. As a result, no additional mounting components such as anchor sleeves are required.
6 parapet sections in only 5 days
Four VARIOKIT formwork carriages are working in parallel to one another as construction work steadily progresses across the Danube. This means that six casting segments, each 21.50 m long, can be realised in only five days – 130 linear metres per week. One of the formwork carriage also takes into account the designated points of the parapet widening in order to accommodate the lamp posts. Simple and thereby fast shuttering and striking procedures as well as a systematic concreting sequence ensure rapid progress for constructing parapets with a total length of 4,440 m.
Pier formwork and access technology
PERI also supplied the climbing formwork for the construction of the 40 bridge piers with heights up to 50 m. VARIO GT 24 girder wall formwork together with CB 240 climbing brackets formed large-sized movable units with concreting cycle heights of 5 m. For the bridge piers with hollow box cross-sections, the internal formwork was realised with the help of TRIO panel formwork. TRIO shaft elements ensured that the internal formwork could remain connected as a complete unit. PERI UP suspended scaffold scaffolding serves as secure access to the bearing points on the pier heads.
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