On the safe track through Copenhagen

Already, nearly 65 million passengers per year use the Copenhagen metro network, according to the owner and operator Metroselskabet I/S. And the influx of new residents to the Danish capital is high. Since 2011, the Cityringen has been under construction, which is scheduled to open at the end of 2019. The underground rapid transit system will connect the Danish Parliament, City Hall, significant national monuments, the main train station, and other central areas of the city. It also offers transfer options to the existing lines M1 and M2 as well as to the S-Bahn and regional trains. The Cityringen will serve 17 new metro stations on line M3.

With over 300 subcontractors, the Cityringen is one of the largest metro construction projects in Europe. The fischer group of companies is also involved in the project, providing numerous product solutions for temporary and permanent fastenings and installations, and overseeing their assembly on site. The tunnel structure consists of concrete and reinforced concrete as well as precast segments as the supporting framework.

Temporary channels, cables, and pipes for ventilation, lighting, as well as water supply and drainage are secured in the Cityringen using the fischer nail anchor FNA II and the concrete screw FBS, tailored to the respective load requirements. Both products allow for disassembly. The FNA II was also used to secure the drainage pipe against buoyancy on the tunnel floor with the pre-drilled metal brackets. This prevents the drainage from shifting from its original position when the section is filled with cement. Other applications of the FNA II included fastening the fire protection boards and, together with washers and spacers, attaching the reinforcement meshes for the sprayed fire protection plaster.

For fastening the facade cladding in the stations with natural stone and hand-formed bricks, undercut anchors and substructures from fischer ACT are used, which are suitable for claddings made of any materials. Loads are introduced form-fit and therefore completely free of expansion pressure with the systems. The corrosion-resistant and fire-tested fischer installation systems secure the pipes and cables for the supply and disposal of the tunnel with electricity and water as well as ventilation and exhaust. In addition, the entire fischer Firestop system is installed. The extensive range of solutions for passive fire protection helps to minimize the spread of fire, smoke, and toxic gases.
Under the direction of Metroselskabet, a total of 42 kilometers of tunnel are to be drilled under Copenhagen and 24 modern metro stations built. Together with a tram project in the periphery of Copenhagen, the opening of more than 50 metro and light rail stations is planned for the years 2019 - 2024.