The world's longest aluminum bridge is about to be built in Norway

Views:2144 Author:Site Editor Publish Time:2018-11-13 11:06:58 Orgin:Site

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　　Hydro news, a new study recently completed by a number of Norwegian agencies shows that in the construction of new coastal roads in Norway, aluminum will be a low-cost, climate-friendly bridge construction material that can be used Steel alternatives.

　　Hydro and an external team of well-known structural engineers, business experts, and researchers investigated the feasibility and cost of using aluminum instead of traditional steel as the construction material for long-hanging bridges.

　　Thomas B. Svendsen, marketing manager for Hydro extrusion solutions, said, "This research is encouraging and may become a model for future bridge construction, as well as an example of cooperation between various parties to open up new uses for aluminum. The most important thing is It will be the longest aluminum bridge in the world with a length of 1,720 meters, of which 1,250 meters will be made of aluminum, corresponding to the amount of aluminum equivalent to 8,000 to 10,000 tons,"

　　In the Norwegian Langenuen Bridge project, the collaborative team investigated whether all relevant design standards of the bridge, including overall stability, local stability, fatigue, ultimate overall stress level and deflection, can be met with aluminum solutions.

　　Daniel Tran, a risk engineer at the Norwegian Public Roads Administration, said: "Aluminum for bridges has many advantages. Aluminum bridges will not corrode because the aluminum oxide layer prevents corrosion. Therefore, no paint is needed. The aluminum in the bridge is The material can be completely recycled with a recovery rate of 100%. Therefore, the use of aluminum bridges is an excellent choice, which can not only meet the climate adaptability, but also reduce costs."

　　The proposed Langenuen Bridge is one of Norway’s largest infrastructure projects and is part of the new E39 coastal highway route. It aims to replace ferries with bridges and other means to increase travel efficiency and reduce costs.

　　The report "Langenuen Suspension Bridge-Aluminum Bridge Alternatives" believes that by shifting from a steel structure to an aluminum structure, you can save time and money in production, materials, and maintenance. In addition, the technology can also be applied to the main beams of other suspension bridges.

　　This report was written by many organizations, including independent structural engineering consulting companies Dr.techn, Olav Olsen, Hydro, leading EPC (engineering, procurement and construction) supplier Leirvik AS and Norwegian University of Science and Technology (NTNU) . DNV GL also participates as a third-party verification agency.

　　Guido Sabatini, Construction and Standards Technical Manager, European Aluminal Association, said, "We are very pleased to see the potential of aluminum in new methods of structural application. In addition, the new version of Eurocode 9 (Aluminum Structural Design Reference Standard) will include applicable Additional regulations for structural design of aluminum bridges. This is interesting because structural engineers will then be able to refer to a unified set of design rules that will help replace more and more traditional steel with aluminum in their projects,"

　　Trond Furu, research manager at the Hydro Technology Center, said, “Since the results of the Langenuen study are very positive and exciting, this may be the beginning of a new method that treats aluminum as a durable material and is available For large-scale infrastructure projects. The main advantages of aluminum bridges can be summarized as: light weight; no maintenance (no rust), no paint or surface treatment; compared to steel, the carbon footprint is lower and the production speed is faster; the formability and Climate adaptability has unique opportunities and advantages; less welding work is required during construction; faster construction; recyclable, etc."

　　At present, the project team has entered the second stage to review the remaining technical issues and methods and determine whether the project can become a reality.

　　Furu said, "There is good cooperation between the Hydro Technology Center and Hydro Business Division, which is conducive to the development of such projects. We believe that aluminum has huge application opportunities in a series of new application fields, and Many fields of application compete effectively with steel and other materials."