Influence and Analysis of Road Width on Modeling of Expressway Sound Source

DOI

10.2991/msmee-17.2017.95How to use a DOI?

Keywords

Road Width, Expressway, Noise

Abstract

At present, most of the traffic noise forecasting models in the domestic and international expressway are concentrated on a line source for noise prediction, and the influence of road width on sound source modeling is rarely considered, which is different from the actual situation. And the noise prediction by the acoustic point is also less analyzed from the viewpoint of the spectral sound pressure level. In this paper, acoustic simulation software is used to simulate the four-lane, six-lane and eight-lane three kinds of expressways. The sound pressure level and comprehensive noise values at different distances from the shoulder are calculated under single and dual noise prediction models, and they have been compared and analyze from the frequency domain aspects. The results show that with the increase of pavement width, such as four-lane, six-lane and eight-lane, the difference of noise forecast between two kinds of sound source models is gradually increased. The dual sound source model is more in line with the actual situation of road traffic noise than using single sound source model. This paper provides a reference for the noise forecasting of expressway.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xintan Ma
AU  - Shichang Feng
PY  - 2017/05
DA  - 2017/05
TI  - Influence and Analysis of Road Width on Modeling of Expressway Sound Source
BT  - Proceedings of the 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017)
PB  - Atlantis Press
SP  - 477
EP  - 480
SN  - 2352-5401
UR  - https://doi.org/10.2991/msmee-17.2017.95
DO  - 10.2991/msmee-17.2017.95
ID  - Ma2017/05
ER  -