Tiedotteet

Reducing Noise

08.03.2017 02:00:00

Noise created by rail traffic is reduced through technical solutions.

Noise created by rail traffic is reduced through technical solutions involving the rolling stock, and with various structural methods such as noise ramparts and barriers. Of these the commonest are high noise barriers, which, however, are not the most cost-efficient solution to the noise problem. Destia is investigating the effects of placing low noise barriers right beside the tracks.

What is holding back the adoption of low noise barriers is the 3D noise modelling software that is used in planning; it doesn’t take account of the actual noise-reduction properties of low barriers. The results of noise measurements show, however, that measured on noise damping, absorption, and insulation properties, low noise barriers are an effective alternative to high barriers.

Destia has built a total of 2,400 metres of noise barriers along the Ring Rail Line, which came into use in 2015. Building noise barriers on this location was made difficult by the many exits and openings for maintenance work, and bridge points. Most of the noise barrier was erected on the embankment beside the track. Part of the barrier was attached directly to the bridge structures using separate fitting elements.

Unlike other noise barriers, a low noise barrier can be fitted directly onto the track embankment without the need for laying any separate foundations. ­Being close to the track, the ­barrier very effectively deflects the noise made by the contact of the wheels with the track. Compared to high noise barriers and ramparts that are further from the track, low noise barriers free up land alongside the track for construction use. Low noise barriers also have a beneficial effect on the landscape, and provide a more pleasant view for train ­passengers.
Destia’s low noise barriers are 100 percent recyclable.


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