Quantificação do efeito benéfico de passagem inferior como barreira acústica

Authors

  • Adalice Flavia Duarte de Medeiros Universidade Federal da Paraíba
  • Roberto Leal Pimentel Universidade Federal da Paraíba
  • Ricardo Almeida de Melo Universidade Federal da Paraíba

DOI:

https://doi.org/10.14295/transportes.v26i3.1622

Keywords:

Traffic noise, Underpass, Noise barrier.

Abstract

The use of noise barriers is one of the measures employed to minimize the impact generated by noise due to the sound level attenuation produced by restricting the passage of sound directly from the source to the receiver. Below level segments of highways have being used to avoid at-level intersections between roads. It is assumed that this difference of level can act as an acoustic barrier, contributing to the reduction of noise in the surrounding areas without causing a substantial visual impact. In this paper, the underpass constructed in the BR-230 was analyzed in order to quantify the effect on the reduction of the emitted noise. This study, which involves local measurements and acoustic simulations using CoRTN’s models, demonstrates the benefits that underpasses can provide as an acoustic solution. Comparing the estimated values without underpass with the on-site measurements, an average reduction of 11.8 dB (A) was obtained. Underpasses can thus cause a significant attenuation in noise levels for locations in the acoustic shadow zone.

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Author Biographies

Adalice Flavia Duarte de Medeiros, Universidade Federal da Paraíba

Engenheira Civil e aluna de Mestrado no Programa de Pós-Graduação em Engenharia Civil e Ambiental.

Roberto Leal Pimentel, Universidade Federal da Paraíba

Professor do Departamento de Engenharia Civil e Ambiental da UFPB, com ênfase na área vibrações e acústica.

Ricardo Almeida de Melo, Universidade Federal da Paraíba

Professor do Departamento de Engenharia Civil e Ambiental da UFPB, com ênfase na área geotécnica (pavimentos e gerência) e transportes rodoviário e impactos ambientais.

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V. 26, N. 3, 2018 -- Prêmio ANPET de Produção Científica

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Published

2018-11-04

How to Cite

Medeiros, A. F. D. de, Pimentel, R. L., & Melo, R. A. de. (2018). Quantificação do efeito benéfico de passagem inferior como barreira acústica. TRANSPORTES, 26(3), 63–74. https://doi.org/10.14295/transportes.v26i3.1622

Issue

Vol. 26 No. 3 (2018): Artigos vencedores do Prêmio ANPET 2017

Section

Artigos Vencedores do Prêmio ANPET Produção Científica

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