| Title |
Investigation of noise barriers enhancement efficiency for attenuation of low frequency traffic noise / |
| Authors |
Saliunas, D ; Volkovas, V |
| DOI |
10.5755/j01.mech.21.1.10137 |
| Full Text |
|
| Is Part of |
Mechanika.. Kaunas : KTU. 2015, vol. 21, no. 1, p. 56-63.. ISSN 1392-1207. eISSN 2029-6983 |
| Keywords [eng] |
low frequency traffic noise ; noise barriers tops ; efficiency |
| Abstract [eng] |
This paper presents investigation of traffic noise barriers enhancement potentiality at low frequencies: regarding measurements results near motorway with 43.3- 49.8 percentage of heavy duty, the investigation assesses efficiency of existing (modelled and built according predicted overall A-weighted rated sound levels) noise barriers and simulates (using finite element method) improving of them by adding most common T-shape and octagonshape tops at low frequencies. According simulation results (model deals with divergence loss, diffraction from obstacles, absorption and reflection from surfaces of cylindrical sound waves), noise barrier enhancement with those tops has influence on additionally 0.6-6.5 dB reduction of SPL at low frequencies in a noise shadow zone. |
| Published |
Kaunas : KTU |
| Type |
Journal article |
| Language |
English |
| Publication date |
2015 |
| CC license |
|
