In Waidhofen an der Ybbs, Österreich, wurde im Sommer 2015 eine Fuß-und Radwegbrücke mit 60 m Spannweite als Ersatzneubau für eine bestehende Stegkonstruktion errichtet. Neben dem Neubau musste die bestehende Stegkonstruktion abgetragen werden, was in Kombination mit den weiteren örtlichen Gegebenheiten zu einem nicht alltäglichen Montage-bzw. Demontage konzept führte. Durch die konsequente Umsetzung einer ganzheitlichen Entwurfsstrategie konnte eine Stegkonstruktion geschaffen werden, die sich harmonisch in die Umgebung integriert und auch binnen kürzester Zeit umgesetzt werden konnte. Schlosssteg 2.0 -A new reconstruction of a bridge for pedestrians and cyclists across the river Ybbs in
<p>The new bridge in the rearmost Ötztal is not a touristic attraction, it is a simple necessity as the existing route over the glacier had become more and more dangerous and complicated to walk. The new bridge with a span of 137.20 m stays at a height of around 82 m over the glacier stream of the Gurgler Ferner. Since its construction in spring 2017, the bridge serves as a new connection between the Ramolhaus and the Langtalereckhütte. The remoteness of the construction site, rapidly changing weather conditions at 2500 m above sea level and the adversity in accessibility due to the valley slopes, which were up to 80° steep, brought along high demands for design and construction of the bridge.</p>
<p>This paper tells the story about the reconstruction of the so called “Schlosssteg”, a footbridge with 60 m span, located in Waidhofen an der Ybbs, Austria. The main topic deals with the personal relation to the site and the design approach, including the special construction sequence, the so called “noninvasive construction method”. After a short historical and technical overview the architectural approach to the design task will be disscused. It will be shown that the arcitectural approach is inseperable linked to the engineering task. Especialy the used construction method brought major influences to the final design of the structure. By using the old, allready damaged, footbridge for installing the new one, the old bridge had to fulfill a final loadtest, which not only stressed the structure, but also the engineers nerves. The hollistic design strategy led to a design which harmoniosusly blends with its enviroment an therefore became awarded with the “European Steel Bridge Award 2016”.</p>
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