On the safe track through Copenhagen

Already now, almost 65 million passengers use the Copenhagen metro network each year, according to the owner and operator Metroselskabet I/S. And the influx of new citizens to the Danish capital is high. The Cityringen has been built since 2011 and is scheduled to open at the end of 2019. The underground high-speed rail system will connect the Danish Parliament, the Town Hall, important national monuments, the Central 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 and regional railways. 17 new metro stations on line M3 will approach Cityringen.

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

Temporary ducts, cables and pipes for ventilation, lighting as well as water supply and drainage are fastened in the city rings with the Fischer FNA II nail anchor and the FBS concrete screw according to the respective load requirement. Both products enable disassembly. The FNA II was also used to secure the drainage line against buoyancy with the pre-drilled metal brackets on the tunnel base. This prevents the drain from moving from its original position when the section is filled with cement. Other areas of application of the FNA II were the attachment of the fire protection panels and, together with washers and spacers, the attachment of the reinforcement nets for the sprayed fire protection plaster.

To secure 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 cladding made of any material. Loads are introduced positively with the systems and therefore completely without expansion pressure. The corrosion-resistant and fire-tested fisher installation systems fix the pipes and cables for supplying and disposing of the tunnel with electricity and water as well as ventilation and de-aeration. In addition, the entire Fischer firestop system is installed. The wide range of passive fire protection solutions helps minimise the spread of fire, smoke and toxic gases.
Under the direction of Metroselskabet, a total of 42 kilometres of tunnels will be drilled under Copenhagen and 24 modern metro stations will be built. Together with a tram project in the outskirts of Copenhagen, more than 50 metro and city train stations are planned to open in 2019-2024.