The chosen steel, SSAB Weathering in grade of 355 (S355J5W+M), coupled with SSAB's thermomechanically rolled weathering steel, makes the bridge's construction more efficient and environmentally friendly. This innovative steel enables seamless welding without preheating – accelerating the manufacturing process and conserving valuable energy resources. Its exceptional impact resistance – even under temperatures as low as minus 50 degrees Celsius – coupled with its extended fatigue endurance, positions it as the ideal material for meeting the demands of rigorous bridge structures.
The use of thermomechanically rolled steel not only made welding and assembly on-site smoother but also seamlessly aligned with the use of robotic laser welding technology. This combination eliminated the necessity for preheating the steel components during assembly, which in turn made the construction process more streamlined and added to the project's overall environmental efficiency. It's important to note that this steel successfully underwent a series of rigorous tests, confirming its reliability and strength in real-world scenarios.
The manufacturing of the Ya Bridge by Prodtex has been characterized by high quality and lower energy consumption compared to traditional methods. Although weight reduction was not the central goal of this project, the potential of the steel was well understood. Pre-fabricated plates supplied by SSAB revolutionized the manufacturing process, enabling faster production, minimizing waste, and reducing logistical costs. This innovative approach not only improved construction efficiency but also mitigated environmental impacts. And the laser welding requires less energy and produces fewer CO2 emissions compared to traditional welding methods. Prodtex AS's novel technique emerges as an environmentally friendly alternative, applicable not only to bridges but to various other steel structures. The Ya Bridge embodies the future of bridge construction, seamlessly merging innovation, sustainability, and efficiency.