Influence estimation of the inclination angle of the top of the noise protection barrier on its efficiency

Authors

DOI:

https://doi.org/10.15587/2706-5448.2021.225474

Keywords:

noise barrier, inclination angle, wide frequency range, noise reduction, traffic flow noise

Abstract

The object of research is the sound field from linear sound sources around a rounded noise barrier of the same height and different angles of inclination of the top part of the barrier. It is known that the effectiveness of noise protection barriers depends primarily on the geometric dimensions of the barrier and the relative position of the sound source, barrier and area of noise protection. A large number of publications have been devoted to the study of the influence of these factors and some others, such as the influence of the earth's surface, sound absorption, sound insulation of the barrier. However, these works did not study the effect of the angle of the top part of the barrier on the change in the barrier efficiency.

In this paper, the reduction of sound levels from linear sound sources around noise barriers with different inclination angle of the top part of the barrier is investigated. Rounded barriers of the same height with different radii are considered, which made it possible to simulate barriers in which the top part of the barrier has a different inclination angle. An effectiveness of such barriers for various locations of the sound source, which could also affect the establishment of a pattern of changes in the effectiveness of barriers, is also considered. In addition, the results were analyzed over a wide frequency range. The calculation of the field around such a barrier was carried out using computer simulation using the finite element method. This method allows to easily change the geometric parameters of the barrier and the position of the sound source. The barriers were considered acoustically hard.

Thus, an influence of the inclination angle of the top part of the barrier on the sound field around the barrier from various locations of sound sources in a wide frequency range is analysed. The results must be taken into account when designing noise barriers to reduce noise levels from traffic flows

Author Biography

Vitaly Zaets, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»

PhD, Associate Professor

Department of Acoustic and Multimedia Electronic Systems

References

  1. Maekawa, Z. (1968). Noise reduction by screens. Applied Acoustics, 1 (3), 157–173. doi: http://doi.org/10.1016/0003-682x(68)90020-0
  2. Kurze, U. J., Anderson, G. S. (1971). Sound attenuation by barriers. Applied Acoustics, 4 (1), 35–53. doi: http://doi.org/10.1016/0003-682x(71)90024-7
  3. Simón, F., Pfretzschner, J., de la Colina, C., Moreno, A. (1998). Ground influence on the definition of single rating index for noise barrier protection. The Journal of the Acoustical Society of America, 104 (1), 232–236. doi: http://doi.org/10.1121/1.423273
  4. Isei, T. (1980). Absorptive noise barrier on finite impedance ground. Journal of the Acoustical Society of Japan (E), 1 (1), 3–10. doi: http://doi.org/10.1250/ast.1.3
  5. Hothersall, D. C., Chandler-Wilde, S. N., Hajmirzae, M. N. (1991). Efficiency of single noise barriers. Journal of Sound and Vibration, 146 (2), 303–322. doi: http://doi.org/10.1016/0022-460x(91)90765-c
  6. Oldham, D. J., Egan, C. A. (2011). A parametric investigation of the performance of T-profiled highway noise barriers and the identification of a potential predictive approach. Applied Acoustics, 72 (11), 803–813. doi: http://doi.org/10.1016/j.apacoust.2011.04.012
  7. Kim, K. H., Yoon, G. H. (2015). Optimal rigid and porous material distributions for noise barrier by acoustic topology optimization. Journal of Sound and Vibration, 339, 123–142. doi: http://doi.org/10.1016/j.jsv.2014.11.030
  8. Yang, C., Pan, J., Cheng, L. (2013). A mechanism study of sound wave-trapping barriers. The Journal of the Acoustical Society of America, 134 (3), 1960–1969. doi: http://doi.org/10.1121/1.4816542
  9. Wang, Y., Jiao, Y., Chen, Z. (2018). Research on the well at the top edge of noise barrier. Applied Acoustics, 133, 118–122. doi: http://doi.org/10.1016/j.apacoust.2017.12.018
  10. Zhao, S., Qiu, X., Cheng, J. (2015). An integral equation method for calculating sound field diffracted by a rigid barrier on an impedance ground. The Journal of the Acoustical Society of America, 138 (3), 1608–1613. doi: http://doi.org/10.1121/1.4929933
  11. Ishizuka, T., Fujiwara, K. (2004). Performance of noise barriers with various edge shapes and acoustical conditions. Applied Acoustics, 65 (2), 125–141. doi: http://doi.org/10.1016/j.apacoust.2003.08.006
  12. Monazzam, M. R., Lam, Y. W. (2005). Performance of profiled single noise barriers covered with quadratic residue diffusers. Applied Acoustics, 66 (6), 709–730. doi: http://doi.org/10.1016/j.apacoust.2004.08.008
  13. Okubo, T., Fujiwara, K. (1998). Efficiency of a noise barrier on the ground with an acoustically soft cylindrical edge. Journal of Sound and Vibration, 216 (5), 771–790. doi: http://doi.org/10.1006/jsvi.1998.1720
  14. Didkovskyi, V., Zaets, V., Kotenko, S. (2020). Improvement of the efficiency of noise protective screens due to sound absorption. Technology Audit and Production Reserves, 3 (1 (53)), 11–15. doi: http://doi.org/10.15587/2706-5448.2020.206018
  15. Fujiwara, K., Hothersall, D. C., Kim, C. (1998). Noise barriers with reactive surfaces. Applied Acoustics, 53 (4), 255–272. doi: http://doi.org/10.1016/s0003-682x(97)00064-9
  16. Huang, X., Zou, H., Qiu, X. (2020). Effects of the Top Edge Impedance on Sound Barrier Diffraction. Applied Sciences, 10 (17), 6042. doi: http://doi.org/10.3390/app10176042
  17. Wang, Y., Jiao, Y., Chen, Z. (2018). Research on the well at the top edge of noise barrier. Applied Acoustics, 133, 118–122. doi: http://doi.org/10.1016/j.apacoust.2017.12.018
  18. Zaets, V. P. (2012). Noise reduction with soundproof screens. Eastern-European Journal of Enterprise Technologies, 6 (10), 25–33. Available at: http://journals.uran.ua/eejet/article/view/5605
  19. Trochymenko, M. P., Zaets, V. P., Osipchuk, L. N., Kotenko, S. G. (2019). The efficiency calculation method for noise barriers located on bridge structures. Science & construction, 22 (4), 45–51. Available at: http://journal-niisk.com/index.php/scienceandconstruction/article/view/119/114
  20. Sotnikova, T. A. (2009). Akusticheskie svoistva shumozaschitnogo barera s kozyrkom. Akustichnii vіsnik, 12 (2), 57–64. Available at: http://hydromech.org.ua/content/pdf/av/av-12-2(57-64).pdf
  21. Zaets, V., Kotenko, S. (2017). Investigation of the efficiency of a noise protection screen with an opening at its base. Eastern-European Journal of Enterprise Technologies, 5 (5 (89)), 4–11. doi: http://doi.org/10.15587/1729-4061.2017.112350

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Published

2021-02-26

How to Cite

Zaets, V. (2021). Influence estimation of the inclination angle of the top of the noise protection barrier on its efficiency. Technology Audit and Production Reserves, 1(1(57), 12–16. https://doi.org/10.15587/2706-5448.2021.225474

Issue

Vol. 1 No. 1(57) (2021): Industrial and technology systems

Section

Mechanics: Original Research

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Copyright (c) 2021 Vitaly Zaets

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