Urban acoustic screens
|Coordinator||CHALMERS TEKNISKA HÖGSKOLA AKTIEBOLAG - Institutionen för bygg- och miljöteknik|
|Funding from Vinnova||SEK 4 892 579|
|Project duration||November 2013 - February 2018|
Purpose and goal
The project has shown that our original concept of low-height acoustic screens for road traffic in the urban environment can be implemented successfully. We estimate that the concept has become more well-known and accepted during the project period. Our case at Holmiaparken and Liljeholmsbron, presented in the produced information material, constitute good examples for attracting further interest. The built-in knowledge and experience are important to spread further so that more low screens can be implemented in more locations, both nationally and internationally.
Expected results and effects
The acoustic effect on road traffic noise for the installed screen at Liljeholmsbron was measured to 5 dB on the walking/cycling track, which is a significant improvement. Calculations showed a similar effect in the closest parts of the adjacent green area Tantolunden. With passages of approximately 6000 cyclists and 3000 pedestrians, as a total of over the bridge, and a few thousand visitors estimated for the green area, the environmental impact is considered to be significant.
Planned approach and implementation
The concept of low-height acoustic screens for road traffic has taken a significant step forward with the project. In addition to screen performance, the project has implemented the planned noise and perception measurements; the auralizations (sound synthesis); as well as the calculations of acoustic insertion loss data that can be used as a correction in calculations with existing noise mapping software. Apart from workshops, project results have been distributed to key persons, through articles at acoustics conference and at SKL:s Trafik- och gatudagar.