ROUGH HOUSE SOFT CONNECTION HAMBURG-HORN

For the Hamburger Hochbahn AG, OTTO WULFF, on behalf of Bahnbau Nord GmbH, has implemented a vibration-isolating track support plate in the tunnel structure of the U4/U2 subway line directly behind the Rauhes Haus station heading towards the city center.

The goal was to isolate the above-ground buildings from the vibrations caused by the trains passing every 5 minutes. For this purpose, approximately 230 height-adjustable spring elements were installed to create a mass-spring system, allowing the 600 m², 40 cm thick reinforced concrete plate to be raised by 4 cm and permanently decoupled from the rest of the subway tunnel structure.

Within 14 days, the track support plate had to be completed and load-bearing during the prescribed maintenance period, ready for rail installation and train traffic. Thanks to great teamwork and the collaborative cooperation with the client and the contractor, train operations were resumed as planned.