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AluBridge

AluBridge

The Potential of Aluminum as a Construction Material

AluBridge (2020–2025) was a research project examining the feasibility of using aluminum in bridges where this material is not traditionally employed. Although aluminum offers benefits such as recyclability, corrosion resistance and low weight, its cost and relative novelty require further study and optimization to make it a practical alternative to steel or concrete in larger bridge applications.

Overcoming Wind-Resistance Challenges in Aluminum Long-Span Bridges

A key aspect in designing long-span suspension bridges is their response to wind loads. While the introduction of aluminum bridge decks reduces the dead loads, it can also increase susceptibility to wind-induced vibrations. These effects may include flutter and other aerodynamic instabilities. AluBridge focuses on verifying wind resistance, with particular attention to the shape of the bridge cross section, since small geometric changes can affect aerodynamic performance.

Within the framework of AluBridge, NTNU performs wind tunnel testing on several bridge deck configurations. Data from these tests is used to analyze aerodynamic stability and to support the development of new approaches for efficient aerodynamic modeling. This includes machine learning techniques applied to aerodynamic data to identify optimal bridge designs that meet structural criteria and minimize material usage.

Collaborative Partners

AluBridge is conducted by a consortium led by Hydro and includes NTNU, SINTEF, Statens vegvesen, Leirvik, Dr. Tech. Olav Olsen, DNV, and Hydal. This collaboration combines industry expertise with academic research, focusing on topics such as fatigue, aerodynamic stability, production techniques, and standardization.

The Research Council of Norway supports the project through the Programme for User-driven Research-based Innovation (No. 314063).


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Contact

  • Øyvind Wiig Petersen

    Øyvind Wiig Petersen Associate Professor

    +4795054612 oyvind.w.petersen@ntnu.no Department of Structural Engineering
  • Ole Andre Øiseth

    Ole Andre Øiseth Professor

    +47-73591493 +4797080892 ole.oiseth@ntnu.no Department of Structural Engineering

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