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Simulation and Analysis of Road Traffic Noise among Urban Buildings Using Spatial Subdivision-Based Beam Tracing Method

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  • Haibo Wang

    (School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China
    School of Intelligent Systems Engineering, Sun Yat-sen University, Guangzhou 510006, China)

  • Ming Cai

    (School of Intelligent Systems Engineering, Sun Yat-sen University, Guangzhou 510006, China)

  • Hongjun Cui

    (School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China)

Abstract

In order to realize the simulation and evaluation of road traffic noise among urban buildings, a spatial subdivision-based beam-tracing method is proposed in this study. First, the road traffic source is divided into sets of point sources and described with the help of vehicle emission model. Next, for each pair of source and receiver, spatial subdivision-based beam-tracing method is used in noise paths generation. At last, noise distribution can be got by noise calculation of all receivers considering the complex transmission among urban buildings. A measurement experiment with a point source is carried out to validate the accuracy of the method; the 0.8 m height and 2.5-m height average errors are about 0.9 dB and 1.2 dB, respectively. Moreover, traffic noise analysis under different building layouts and heights are presented by case applications and conclusions can be reached: (1) Different patterns result in different noise distributions and patterns designed as self-protective can lead to an obvious noise abatement for rear buildings. Noise differences between the front and rear buildings are about 7–12 dB with different patterns. (2) Noise value might not show a linear variation along with the height as shielding of different layers is various in reality.

Suggested Citation

  • Haibo Wang & Ming Cai & Hongjun Cui, 2019. "Simulation and Analysis of Road Traffic Noise among Urban Buildings Using Spatial Subdivision-Based Beam Tracing Method," IJERPH, MDPI, vol. 16(14), pages 1-16, July.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:14:p:2491-:d:247919
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