Our engineering achievements
From the outset, our focus was clear: deliver a technically superior structure that preserves the design intent while introducing groundbreaking innovation.
1. World-first use of carbon hangers
The most significant achievement of this project is the introduction of carbon tension elements as primary load-bearing hanger cables in a network arch railway bridge—a global first.
Carbon offers exceptional fatigue performance and tensile strength, corrosion resistance, and durability, making it ideal for hangers subject to fatigue impact. Although specific approval based on testing and expert statements was required German Railway went for this technical alternative solution as it allowed a reduction of the deck weight and thus offered savings of more than 20 % of steel tonnage in the primary structure.
This innovation enhances durability and sets a new standard for sustainable bridge design.
2. Technical optimisation without compromise
The architectural concept envisioned a delicate network arch, with seamless transition to the side spans. Within the development of the technical alternative design, we strived to meet the original visual design intent of the competition win.
Modifications of the arch shape to ideally follow the bending-neutral axis as well as the implementation of a variable arch section tailored to the structural performance needs were implemented as well as a network hanger layout optimized to make use of the performance of the carbon tension members.
3. Pioneering approval process
Introducing a new material into a critical railway application required an unprecedented approval process. Within a single case approval process guided by independent experts and the Federal Railway Authority, technical guidelines, safety factors, and inspection protocols tailored to carbon components were developed.
copyright: Wilfred Dechau