Pedestrian Bridge, Rosenburg, Austria
The pedestrian bridge over the Taffa River functions not only as a bridge, but also includes a garden toolshed and seating along the platform. Additionally, the delicate top truss chords provide a pedestrian railing along the bridge's length.
The 2019 Austrian Steel Construction Award was presented to both the structural engineering firm KonstruktING GmbH and the architecture firm 4juu architekten for their mutual design of the project.
The pedestrian bridge has a total length of 74 ft, 6 in with a free span of 50 ft, 4 in. The top and bottom truss chords consist of 0.20 in x 3.94 in solid steel bars. The truss web members are round steel bars 0.71 in diameter, arranged between the chords at varying angles and spacing. Depending on the force distribution along the structure, additional web members are placed at necessary locations. The round bars are arranged in four planes, which increase the transverse stiffness.
A thin deck of flat bars and channel sections spans the bottom chords. The hardwood plank flooring is further placed on top of the deck. The pedestrian bridge widens to a Y-shape at the garden entrance. The garden toolshed is integrated at this location.
Due to the low material costs, the pedestrian bridge is an ecologically optimized structure that integrates seamlessly with the surrounding area.
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A model or drawing of a structure that provides information about the essential load-bearing elements.
SHAPE-THIN determines the effective cross-sections according to EN 1993-1-3 and EN 1993-1-5 for cold-formed sections. You can optionally check the geometric conditions for the applicability of the standard specified in EN 1993‑1‑3, Section 5.2.
The effects of local plate buckling are considered according to the method of reduced widths and the possible buckling of stiffeners (instability) is considered for stiffened sections according to EN 1993-1-3, Section 5.5.
As an option, you can perform an iterative calculation to optimize the effective cross-section.
You can display the effective cross-sections graphically.
Read more about designing cold-formed sections with SHAPE-THIN and RF-/STEEL Cold-Formed Sections in this technical article: Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3.
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