In the course of the planning approval, the Beyer building dynamics office carried out a vibration analysis. The result of the survey made it clear that various vibration insulation measures are necessary.
For this purpose, the commissioned track construction companies laid a total of around 7,000 m² of ballast mats and 1,000 m² of side mats made of the vibration-insulating material Sylomer®. Installation was carried out on a compacted mineral base layer or on the tunnel floor. In addition, a full-surface mass-spring system (MFS) was laid in a 30-meter long section of lawn track.
The ARGE U6 Stadtbahnanschluss consortium installed strip storage for a MFS over a length of 130 metres in the mining tunnel area. The bearings - made of rigid Sylomer® - have a thickness of 70 and a width of 400 millimetres. Similar bearings have been proving their worth for years in several underground railway projects, for example in the Munich underground network.