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444 - Lärmspoiler, friendly noise, innvoative noise abatement technology along tracks and roads
Brunbauer W.
Abstract
LÄRMSPOILER, Friendly noise ; Innovative noise abatement technology along raiwaytracks and roads; By CALMA-TEC Noise abetment barriers along railway tracks and motorways are essential elements of environmental protection. Essential improvements of the shielding performance, acoustic quality and design are urgently needed. Noise is the cause of mental depression and physical exhaustion of people. Improved noise abatement is a growing challenge to townplanners, urbanists and architects, road design and relevant industry and engineering. The European Parliament and Council have established new standards of tolerance versus traffic noise. Noise protection products on the market are of poor quality . The innovative element of the LÄRMSPOILER® is the special design of the refraction edge, the design and use of special shapes and materials. The outward bending is the most characteristic element . *Noise protection walls supported by tilted or curved vertical columns, absorptive pads, the top edge is of round shape and soft absorptive material and tilted outwards *Noise protection tunnels (or semi tunnels) *A prototype of 2 m height realized in Bavaria shows a performance of 4,5 dB(A) better than traditional noise barrier . * A prototype of 3m along the A1Autobahn, Upper_Austria proved a shielding performance equal to a traditional wall of 4m height. * A new design curved Lärmspoiler was lately installed at the S35. A transparent solution is under construction. * High-speed trains produce vibrations which may destroy noise barriers when hitting the resonance frequency *Lärmspoiler was developed to provide durability and dynamic performance for high speed train air shocks (5 million of 300 km/h). Research and scientific evidence : 1. Less noise behind the wall. Friendly noise: improvement of noise spectrum and psycho-acoustic effects 2. Innovative design and construction 3. Open view from the road 4. High durability and shock resistance Wolfgang Brunbauer
Citation
Brunbauer W.: Lärmspoiler, friendly noise, innvoative noise abatement technology along tracks and roads, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7