Noise prediction considering differences of sound characteristics of noise barrier

Daigo Sato, Akira Omoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In noise prediction for railway viaducts using numerical analysis, walls such as noise barriers made of adequately thick concrete are often treated as rigid walls. A sound-insulating panel such as a polycarbonate sheet of 8mm thick is sometimes used as additional noise barriers, but its sound insulation performance is generally lower than that of concrete noise barrier. Therefore, it is desirable to consider the realistic sound insulation performance to enhance the accuracy of noise prediction. In this study, the sound insulation performance of the panel is regarded as a damping component and its characteristics is given by associating the complex sound speed with the transmission loss of the panel. The variation of noise levels outside a railway viaduct in increasing the height of the noise barrier is calculated by a finite element method and indicate good agreement with the past findings.

Original languageEnglish
Title of host publicationINTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering
EditorsAntonio Calvo-Manzano, Ana Delgado, Antonio Perez-Lopez, Jose Salvador Santiago
PublisherSOCIEDAD ESPANOLA DE ACUSTICA - Spanish Acoustical Society, SEA
ISBN (Electronic)9788487985317
Publication statusPublished - 2019
Event48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID - Madrid, Spain
Duration: Jun 16 2019Jun 19 2019

Publication series

NameINTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering

Conference

Conference48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID
CountrySpain
CityMadrid
Period6/16/196/19/19

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Fingerprint Dive into the research topics of 'Noise prediction considering differences of sound characteristics of noise barrier'. Together they form a unique fingerprint.

Cite this