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First project with 700 mm wide Z-piles installed with a free-riding hydraulic press


The German Railway (DB AG) is currently modifying the Station Berlin Adlershof, which includes the widening of the bridge over the “Rudower Chaussee”. This project is part of the reconstruction of the Metroline S 9 from “Baumschulenweg” to the “Grünauer Kreuz”.
The new Station Adlershof will get three accesses on both sides of the “Rudower Chaussee”. The widened bridge passage will have three different parts: the tramway will use the central part. There will be on both sides two lanes for cars and a dedicated bus lane with direct stop at the station entrances.
Berlin is since the introduction of the free riding hydraulic press a traditional "hydraulic press market place". Due to the dense and often sensitive construction in the German capital and favourable soil conditions, mainly sandy soils, the press-in installation method has rapidly been accepted.
This was also the case for this project:
  • For statical reasons, steel sheet piles were the most suited option for the bridge abutments.
  • Due to very close adjacent construction (the expressway "Adlergestell", railway lines and IT-Companies with highly sensitive equipment), the use of the press-in system was decided from the beginning
  • The first design was made with an AZ 36 section
We offered as alternative the new AZ 37-700 section, which was accepted and ordered by the customer.
The job has been accomplished successfully based on a long-term collaboration with the design engineer and the project owner. Another reason for success was the availability at the right moment of the first “Sill Worker” Press which can handle and install 700 mm wide AZ-piles.

 Project owner  DB AG
 Design engineer  Emch+Berger GmbH, Ingenieure und Planer, Berlin-Brandenburg
 Main contractor  Spitzke Hoch- und Ingenieurbau GmbH Großbeeren
 Driving contractor  Fa. Ernst Meier Berlin (Einpressarbeiten)
 Steel sheet piles  53 t AZ26 ( 8,00/9,00 m lang) und 173 t AZ37-700 ( 8,00 bis 10,50 m lang)


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