三维有限长声屏障声压简化算法

doi:10.3969/j.issn.1002-0268.2012.08.026

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摘要 To predict the performance of three-dimensional (3D) finite-length noise barriers, a simplified method is presented to calculate the acoustic pressure of noise barriers by a theoretical approach. Based on noise diffraction theory and acoustic calculations of two-dimensional barriers, the proposed method considers diffraction around 3D barriers. This method can calculate the acoustic pressure of a one-sided noise barrier and parallel noise barriers. Comparisons are made by the fast multipole boundary element method using Virtual. Lab software. The simulation results show that the acoustic pressure and curve tendency are in very good agreement in the frequency range from 20 to 2 000 Hz. When calculating the acoustic pressure of a one-sided barrier, the absolute error is 1.95 dB and the relative error is 2.98%. When calculating the acoustic pressure of parallel barriers, the absolute error is 2.43 dB and the relative error is 3.75 %. These results prove the accuracy of the simplified method. Compared with other complicated methods, the simplified method does not require integrals and is easier to perform and more useful. This method can be used to study and design 3D finite-length noise barriers.

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	作者相关文章
	王丽君
	郭萍

关键词 ： environment engineering, acoustic pressure, theoretical approach, noise barrier, noise diffraction, fast multipole boundary element method

Abstract：To predict the performance of three-dimensional (3D) finite-length noise barriers, a simplified method is presented to calculate the acoustic pressure of noise barriers by a theoretical approach. Based on noise diffraction theory and acoustic calculations of two-dimensional barriers, the proposed method considers diffraction around 3D barriers. This method can calculate the acoustic pressure of a one-sided noise barrier and parallel noise barriers. Comparisons are made by the fast multipole boundary element method using Virtual. Lab software. The simulation results show that the acoustic pressure and curve tendency are in very good agreement in the frequency range from 20 to 2 000 Hz. When calculating the acoustic pressure of a one-sided barrier, the absolute error is 1.95 dB and the relative error is 2.98%. When calculating the acoustic pressure of parallel barriers, the absolute error is 2.43 dB and the relative error is 3.75 %. These results prove the accuracy of the simplified method. Compared with other complicated methods, the simplified method does not require integrals and is easier to perform and more useful. This method can be used to study and design 3D finite-length noise barriers.

Key words： environment engineering acoustic pressure theoretical approach noise barrier noise diffraction fast multipole boundary element method

收稿日期: 2013-04-15

基金资助:Supported by the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China (No.531105050037);and the Subject Project of State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body of Hunan University of China (No.61075003)

通讯作者: WANG Li-jun, wang080806@163.com E-mail: wang080806@163.com

引用本文:

王丽君, 郭萍. 三维有限长声屏障声压简化算法[J]. Journal of Highway and Transportation Research and Development, 2013, 7(3): 105-110.
WANG Li-jun, GUO Ping. A Simplified Method to Calculate the Acoustic Pressure of Three-Dimensional Finite-Length Noise Barriers. Journal of Highway and Transportation Research and Development, 2013, 7(3): 105-110.

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[1] SCHOLES W E, SALVIDGE A C, SARGENT J W. Field Performance of a Noise Barrier[J]. Journal of Sound and Vibration, 1971, 16(4):627-642.
[2] MAY D N, OSMAN M M. Highway Noise Barriers:New Shapes[J]. Journal of Sound and Vibration, 1980, 71(1):73-101.
[3] HUTCHINS D A, PITCARN D. A Laser Study of Multiple Reflections within Parallel Barriers[J]. Journal of the Acoustical Society of America, 1983, 73(6):2216-2218.
[4] MAEKAWA Z. Noise Reduction by Screens[J]. Applied Acoustics, 1968, 1(3):157-173.
[5] HURST C J. Sound Transmission between Absorbing Parallel Planes[J]. Journal of the Acoustical Society of America, 1980, 67(1):206-213.
[6] MORGAN P A, HOTHERSALL D C, CHANDLER-WILDE S N. Influence of Shape and Absorbing Surface:A Numerical Study of Railway Noise Barriers[J]. Journal of Sound and Vibration, 1998, 217(3):405-417.
[7] MIKI Y. Acoustical Properties of Porous Materials Modification of Delany-Bazley Models[J]. Journal of the Acoustical Society of Japan, 1990, 11(1):19-24.
[8] PANNETON R. Development and Validation of a Model Predicting the Performance of Hard or Absorbent Parallel Noise Barriers[J]. Journal of the Acoustical Society of Japan (E), 1993, 14(4):251-258.
[9] LI Feng, CAI Ming, LIU Ji-ke, et al. Simulation of Dynamic Traffic Noise at Street Canyon Road Intersection[J]. Journal of Highway and Transportation Research and Development, 2011, 28(1):251-258.(in Chinese)
[10] HJ/T90-2004, Norm on Acoustical Design and Measurement of Noise Barriers[S]. (in Chinese)
[11] LI M, WONG H Y. A Review of Commonly Used Analytical and Empirical Formulae for Predicting Sound Diffracted by a Thin Screen[J]. Applied Acoustics,2005, 66(1):45-76.
[12] CIANFRINI C, CORCIONE M, FONTANA L. Experimental Verification of the Acoustic Performance of Diffusive Roadside Noise Barriers[J]. Applied Acoustics, 2007, 68(11/12):1357-1372.
[13] DU Gong-huan, ZHU Zhe-min, GONG Xiu-fen. Acoustic Foundation[M]. 2nd ed. Nanjing:Nanjing University Press, 2001:309-310. (in Chinese)
[14] CURZE U J, ANDERSON G S. Sound Attenuation by Barriers[J]. Applied Acoustics, 1971, 4(1):35-53.
[15] PIACENTINI A, INVERNIZZI M, PANNESE L. Computational Acoustics:Noise Reduction via Diffraction by Barriers with Different Geometries[J]. Computer Methods in Applied Machanics and Engineering, 1996, 130(1/2):81-91.
[16] KLINGNER R E, MCNERNEY M T. Design Guide for Highway Noise Barriers[R]. Texas:Texas Department of Transportation, 2003:8-11.