ArcelorMittal

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Steel-concrete Composite Bridges with Hot-rolled Sections

ArcelorMittal – Luxembourg

• Net-arch bridges with cold-bent hot-rolled sections for the arches allow for a slender and aesthetical bridge design.
• Net-arch bridges are suited for road and railway bridges due to small amount of steel to be used which results in low construction costs.
• Heavy hot-rolled sections (e.g. HD sections) offer high compression strength and a suitable for long span bridges : >120m for road bridges and >100m for railway bridges.
• Long spans exceeding 100m over rivers without the need of any intermediate pillars significantly
  decrease the risk of damage during floods.
• First introduction of heavy hot-rolled sections in net-arch bridges in Poland in the years 2007-2009

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Characteristics

• High Structural Efficiency
  – Hot-rolled high-strength steel enables lightweight, long-span composite bridges.
• Quick and Easy Installation
  – Prefabricated girders simplify transport and crane-assisted erection.
• Weathering Steel for Cost Savings
  – Durable steel (e.g., Arcorox
  ) lowers maintenance and construction time.
• Eco- Friendly Construction 
  – Uses 100% recycled and renewable-energy-based steel (e.g., XCarb) to reduce carbon footprint.

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Applications

MS-15 viaduct over river Lyna in Olsztyn, Poland, opened in traffic in 2017. Two separate net arch structures, each one with a span of 120m. The arches have a height of 21m, an axis – distance of 13.4m and are realised with hot-rolled profiles HD 400 x 744 and HD 400 x 1086 in HISTAR® 460.

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Categories

Restoration Solution, Road & Bridge