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The transparent structure of the Vienna City Landing Stage with Cofraplus® 77
The new landing stage for the Twin City Liner, the liner connection between Vienna and Bratislava, consists of an impressive, elongated steel structure, which partly protrudes over the water. ArcelorMittal Construction Austria supplied 2000 m2 of Cofraplus® 77 steel deck for the composite flooring.
70 river kilometres in just 75 minutes
The fast Twin City Liner connection between the closest EU capitals has been in existence for several years; additionaly, two DDSG Blue Danube ships are in use and travel the 70 river kilometres in just 75 minutes.
Since the summer of 2010, the new City Liner landing stage has also been in operation. A bright, 127m long steel structure protrudes with its two and a half floors from Franz-Josefs Kai on Schwedenplatz over the quayside and partly over the Danube Canal.
In urban development, the structure is interpreted as a bridge, running parallel to Franz Josephs Kai. Only the curved ramps at both ends connect with the existing quay wall.
A transparent structure
Architecturally, the transparent structure is reminiscent of a ship floating above the water.
From the quay wall, a slightly sloping ramp leads to the ticket booth, an exhibition and event area, a restaurant, and a coffee shop. The layout of all of these areas on one level half-way between the quay and the quayside offers maximum flexibility for use during events, exhibitions, etc.
By following the ramp from the quay upwards you will get to the sun deck with a café offering a panoramic view over the Danube Canal, Schwedenplatz, and the surrounding rows of houses. Both in the restaurant and in the café you have a direct view over the water. In summer, sliding window elements, which can be opened, create a terrace-like atmosphere.
The structure's roof provides protection against the effects of the weather over the actual entry on to the quayside and the riverside walk along the Danube Canal.
The supporting structure, designed by Werkraumwien, is based on a steel framework structure: the cantilever arm in a transverse building direction over the Danube Canal of up to half of the building width is realised via a transverse framework at the centre supporting point. Three framework levels with room-high centre framework connect all five supporting points and bridge the maximum spans of 41m. In the longitudinal direction of the structure, the construction was completed with a room-high framework on the land side and with a room-high two-field framework on the water side. Composite steel girders span across the framework levels, while a reinforced concrete steel ribbed slab with aerated concrete on a trapezoidal sheet metal formwork forms the floor decks.
Besides the pressure areas of the composite girders, the aerated concrete ribbed slab, which forms a tubular structure with the vertical framework, also contributes to the bracing of the entire structure.
The supporting structure rests on five points:
- two cast-in-place concrete wall bearings, which allow a longitudinal displacement of the structure and thus avoid temperature expansion due to restraints
- three steel support groups in combination with the reinforced concrete foundations form dissolved discs for the longitudinal and transverse bracing of the building
The structure’s foundation consists of reinforced steel grids in combination with vertical and tilted micro piles as well as soil stabilisation by means of jet grouting.
- 2009 - 2010
Wiener Donauraum Länden und Ufer Betriebs, Entwicklungs gmbh
- Building services:
Vasko & partner
- Project management:
- WBW team:
Corinna Eger, Thomas Mennel, Reinhard Muxel
Margherita Spiluttini & ArcelorMittal Construction Austria