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2022 | OriginalPaper | Buchkapitel

Analysis and Characterization of Noise Generated in Heavy-Haul Railways in Brazil

verfasst von: Thiago Antonio Fiorentin, Yesid Asaff, Laura Dacoreggio Volpato Braz

Erschienen in: Sustainable Rail Transport 4

Verlag: Springer International Publishing

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Abstract

The noise generated by transportation systems is one of the most important causes of noise-induced annoyance, since exposure to high level noises for long periods of time can be detrimental to health. Amongst the different types of noise that originate from railroads, the squeal noise generated at curves, the impact noise generated at rail joints and the rolling noise stand out. To propose mitigation measures to this problem, noise generation must be understood as well as by which parameters it is influenced. To that end, analytical models have been developed to predict the generated Sound Pressure Level (SPL) and to verify which factors are related to noise generation. This paper aims to validate analytical models for impact noise, squeal noise and rolling noise, which were originally designed for urban railways, used for passenger transportation. In this work, the validation is made using SPL measurements taken at a Brazilian heavy-haul railway, and a railway which carries bulk cargo in general. The models are implemented on a numerical computation software considering vehicle and track characteristics, train speed and a reference SPL. The results obtained from the models were compared with SPL measurements performed at the railroad during regular operation for the three cases (rolling, squeal and impact), which, despite the measurement limitations imposed by practical constraints during regular traffic operation, showed good agreement.

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Metadaten
Titel
Analysis and Characterization of Noise Generated in Heavy-Haul Railways in Brazil
verfasst von
Thiago Antonio Fiorentin
Yesid Asaff
Laura Dacoreggio Volpato Braz
Copyright-Jahr
2022
DOI
https://doi.org/10.1007/978-3-030-82095-4_6