Noise barriers efficiency dependence on their shape and geometry


The work examines noise barriers and evaluates their effectiveness when changing their geometry and shape. Noise barriers are one of the most effective and widely used methods of reducing noise caused by road and railway transport. The effectiveness of the barrier depends on the materials used in the construction, the barrier’s height, geometry, shape, and the acoustic properties of the additional elements installed on top of the barriers. The aim of the work is to review and analyze the scientific literature, which would allow to evaluate the dependence of the acoustic characteristics of noise-reducing barriers on the geometry and shape of the barrier, and to provide recommendations for the design and selection of noise barriers.

Article in Lithuanian.

Triukšmą mažinančių barjerų efektyvumo priklausomybė nuo formos ir geometrijos


Straipsnyje nagrinėjami triukšmą mažinantys barjerai ir vertinamas jų efektyvumas kintant jų geometrijai ir formai. Triukšmą mažinantys barjerai – viena efektyviausių ir plačiai naudojamų priemonių, užtikrinančių kelių ir geležinkelių transporto sukeliamo triukšmo mažinimą. Barjero efektyvumas priklauso nuo konstrukcijoje naudojamų medžiagų, barjero aukščio, geometrijos, formos, ant barjerų viršaus įrengtų papildomų elementų akustinių savybių. Darbo tikslas – apžvelgti ir išanalizuoti mokslinę literatūrą, kuri leistų įvertinti triukšmą mažinančių barjerų akustinių charakteristikų priklausomybę nuo barjero geometrijos ir formos. Straipsnyje apžvelgtas Y, T, L, U formos barjerų efektyvumas, nustatyta, kad daugumoje atvejų geriausi barjerų triukšmo slopinimo rezultatai gaunami ant barjerų viršaus įrengiant T formos ir Y formos profilius. Tokio tipo triukšmą mažinančių barjerų efektyvumas gali padidėti nuo 15 % iki 30 %. Pastebėta, kad triukšmui nuo greitaeigių traukinių mažinti mokslininkai kuria ir tiria lenktus, pusiau uždarus L formos arba visiškai uždarus U formos barjerus.

Reikšminiai žodžiai: triukšmas, triukšmo mažinimas, triukšmo barjerų efektyvumas, triukšmo barjerų forma.

Keyword : noise, noise reduction, efficiency of noise barriers, shape and geometry of noise barriers

How to Cite
Strazdas, E., & Januševičius, T. (2023). Noise barriers efficiency dependence on their shape and geometry. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania, 15.
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Sep 18, 2023
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