DBPapers
DOI: 10.5593/SGEM2014/B52/S20.094

THE EFFECTIVENESS OF A LOW HEIGHT NOISE BARRIER

P. Cizkova, L. Stulikova
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-18-6 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 2, 711-718 pp

ABSTRACT
Due to the ever growing demands for health protection from the adverse effects of noise and vibrations, the production of various types of noise control measures has been rising. In the spring of 2013, a low height noise barrier (LHNB) was used along a railway line in the Czech Republic for the first time. This barrier was placed along a 214 m long test section of a railway track (No. 520 A) in Prague – Hlubočepy. The study (Analysis of the Effectiveness of a Low Height Noise Barrier along a Section of the Hlubočepy – Rudná Railway Line) included the evaluation of the effectiveness of the low acoustic screen in terms of noise emissions in the respective area. Direct in-situ measurement at two measured points of the investigated section along a railway line was performed before and, successively, after the installation of low height noise barriers. The measured values of equivalent A–weighted sound pressure levels LAeq were used to determine the acoustic effectiveness of the newly built low noise screen. Furthermore, the investigated area was simulated in the LimA prediction software. The output from the LimA software were numerical values of equivalent Aweighted sound pressure levels LAeq computed at individual points for a situation without and with the use of the low noise screen. The values obtained from the LimA prediction software were subsequently compared against the direct in-situ measurement data. The resulting values served to determine the LHNB effectiveness within the investigated area.

Keywords: Noise control measures, Low height noise barriers, Effectiveness
evaluation, In-situ measurement, LimA software