The district of Rosaleda, a new residential area in the town of Sant Fruitos that holds more than 6% of its population, was isolated from the commercial area of Casanova and the rest of the urban core by the state road N-141C. The crossing of this four lane road, which connects the town of Manresa with the town of Vic, has caused many accidents over the last few years. For this reason, the Municipality decided to completely eliminate this risk by building a signature pedestrian bridge.
The two main concepts proposed for this bridge are the use of a classical arch structure as the main element and the use of high-performance and structurally innovative materials Stainless Steel and GFRP (Glass Fiber Reinforced Polymer). The arch, with a span of 40 m, is leaned to create a dynamic and tense feeling, and joins the deck for greater structural efficiency. The structure is conceived in a way that does not transmit the horizontal forces from the arch to the ground, avoiding expensive foundation systems. The arch is anchored directly to the deck on one side of the slab edge and through a strut element on the other.
The construction processes with stainless steel are similar to those with carbon steel, but not identical. Specific techniques for cutting, bending, welding and finishing have been adopted.
Sobrino, J.A.; “Aesthetics of urban steel bridges”, Modern Steel Construction, AISC Magazine (ISSN 0026-8445), pp 52-55, March 2012.
Sobrino J.A.; Pedestrian bridges with hybrid Stainless Steel-GFRP Structure.
Proceedings of the International Bridge Conference (IBC-11-51).
Pittsburgh (USA), June 2011.