Unique experiments with railway bridge - Norrbotten's Courier

bridge would sag, that was the intention,

Photo: Transport Administration

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Luleå. On Thursday charged a railway bridge until it sagged

class=”Ing”> The purpose of this unique experiment is to save money and increase security.

life of the bridges can be extended by ten years, the saving of the order of 200 million annually just for the Swedish railway bridges. The result may also be possible to apply the road bridges. If the life of an iron road bridge can be extended by 20 years, it means that the change becomes free when compared with replacing prematurely.

Source: Transport Administration.

Behind experiment that took place earlier on Thursday is the Transport Administration and Luleå University of Technology. The bridge used is a former railroad bridge over Åbyälven in Norrbotten, it was decommissioned in 2012.

Traffic Authority owns and manages 4,000 railway bridges over time in both age and break down, being also increases the load. The aim was to find out whether it is possible to increase the lifespan, allow for higher loads and reduce maintenance costs.

class=”Rub5″> Confirmed uncertainties

experiment that is the start of a research project aimed to bridge charged until rupture. Transport Administration broexpert, Anders Carolin is delighted that everything went great.

– We got confirmed some of the uncertainties we had, he said hours after the trial.

can already Anders Carolin draw certain conclusions, including that the bridge was a little more than they bargained for when it came to the final breach.

Laboratory tests

Next, some parts of the bridge will be taken to a lab for more tests and fatigue tests, including research on data collected during the day continues.

– This is not something that ends with this experiment, but the Swedish Transport Administration is constantly trying to get better at using our designs.

Furthermore, he also says that some classification calculations that they already have, they do not really dare to put stamp on when they did not have black and white how structures behave in certain details.

– I hope we get the answers very soon, so we can put our stamp says Anders Carolin.

Ingela Rasimus
ingela.rasimus @ kuriren.com
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