The renewed Dresdner Bahn will soon connect Berlin's city centre quickly and directly with Berlin Brandenburg Airport. And travel time on the Berlin - Dresden route will be as much as 45 minutes shorter once all the work is completed.
But before that happens, a lot has to be done on this very busy 16-kilometre stretch of railway. For instance, a completely new double track will be built next to the existing connection. Moreover, all 9 level railway crossings will be replaced by railway bridges or subways and another 9 railway bridges will be renewed or extended. A gigantic job of the highest order!
For the installation of the new railway viaducts at Blankenfelde, Wagenborg Nedlift's bridge specialists were called in.
The heaviest bridge of 183 tonnes was unloaded in parts at the nearby construction site, transported to the project site using SPMTs and positioned there.
In doing so, the bridge team used a sustainable horizontal displacement technique. Instead of working with the traditional, hydraulically driven, skid system, the team opted for ETR, an electric trolley system.
This ETR trolley system can move loads weighing up to about 600 tonnes horizontally along a guided rail system. The trolley system is equipped with an electric drive, making it emission-free and low-noise. Furthermore, as no hydraulics are involved, much less equipment needs to be transported to the project site. The risk of an environmental incident due to an oil spill is also eliminated.
Besides scoring better in terms of sustainability, the trolley system also offers technical advantages over conventional skid systems. Load movements are steadier thanks to continuous movement and the ability to precisely control travel speed, including acceleration and deceleration. A perfect fit for the installation of the railway viaduct in Blankenfelde.
Footage: Eiffage Infra-Bau