Prosmyky traveller

By Steve Skinner18 November 2008

Doka formwork travelled to the Czech Republic to create the new Prosmyky bridge over the river Elbe, due for completion in 2009. The world debut of Doka’s new ‘cantilever forming traveller’ has played an integral part in the ongoing construction process as it is dimensioned for casting 5 m long bridge segments weighing up to 250 tonnes, which means the project’s been kept on schedule by SMP and Metrostav despite tough demands.

The box-girder superstructure sits on six piers and the three spans of the superstructure are being cast by two Doka cantilever forming travellers. To complete the bridge there will be 26 casting steps, each 15 m wide and 5 m long.

The widest span is 151 m, meaning the Prosmyky bridge will have the longest span of any bridge in the Czech Republic.

“The advantages of the cantilever forming traveller are its modularity, adaptability, its workplace-friendly design through the use of optimised longitudinal trusses, its innovative drive concept using plastic bearings and hydraulic cylinder and its high standard of safety,” said a Doka spokesperson.

The combination of Doka’s new cantilever system and its top 50 large-area formwork removes the often fault-prone interface between traveller and formwork.
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