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| Peri provides solution for new Malmö city tunnel  The Oresund connection between Sweden and Denmark, a combination comprising both bridge and tunnel structures, was officially opened in July 2000. As a result, the cities of Malmö and Copenhagen were brought much closer together through this road and rail development. With the new Malmö city tunnel, the rail connection should be accelerated even further. The key element of the 9 billion Swedish krone project is the eleven kilometre-long direct connection between the Öresund bridge and the Malmö main railway station as well as the new, underground station at the existing station. Also included in the development are two additional railway stations in city centre and on the outskirts of the city and whose completion is planned for 2011.With the entrance area in the south and station extension in the north, the first construction sections are already are in full swing. For this, the Weissenhorn-based formwork and scaffold manufacturer, Peri, provided the most cost-effective solution. In a Swedish-German collaboration, Peri engineers developed an intelligent combination consisting of project-specific formwork carriage constructions and rentable Peri system equipment for the challenging tasks. The tunnel section for the railway station at Malmö main station is being built using the cut-and-cover method, and varies considerably in both width and height. On both sides, the twin rectangular cross-sections have internal widths of up to 21 metres as well as heights between 7.20 m and 9.85 m. The semi-monolithic method is carried out in the so-called trough construction procedure. Here, the bottom plate and walls are concreted in one pour with the slab completed separately afterwards. A maximum level of watertightness is achieved by not having any construction joints in the area of the bottom plate. The comprehensive Peri formwork solution for the twelve metre-long concreting sections consisted of the variable Peri Vario GT 24 girder wall formwork on two formwork carriages for the casting segment in advance, a specially designed Peri Vario solution for the elliptical reinforced concrete columns along the tunnel centre as well as the two slab formwork carriages which subsequently followed. write your comments about the article :: © 2006 Construction News :: home page |