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Heureka Bridge
Vantaa, Finland 1990 The pedestrian bridge links the city of Vantaa with the Finnish Science Center Heureka. The structural and architectural character of the bridge was aimed to be related to that one of Heureka itself, where the same design team already worked in very good co-operation to find out the spirit of Heureka. The chosen bridge type is a cable stayed steel frame structure with a main span of 72 m and a total length of 112 m. The tubular 3-dimensional steel frame is similar to the Heureka entrance shelter turned upside down. The frame is covered by glue laminated wood deck. The bridge is supported by two 26 m high pylons. They consist of four (4) component tubes of 150 mm diameter which are connected with intermediate tube pieces. Both pylons are wire stayed structures like a slender sailboat mast. At the top of the pylons is a massive steel tube, where both the suspension bars and wires are anchored. The pylons are unsymmetrically placed and inclined in the bridge direction in order to compensate for the rise of the bridge deck towards Heureka. Transvensal to the bridge they are inclined as well because their stay wires must not limit the free traffic space on the deck. The bridge railings, which are also inclined, are assembled from stainless steel components. The lightning is placed in the railing. |