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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.19 No.01

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Developments of monitoring system to measure sound absorbing coefficient and structural stability of sound absorbing panel on the concrete track in the urban train tunnel

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2017, v.19 no.01, pp.1-9
https://doi.org/10.9711/KTAJ.2017.19.1.001



& (2017). Developments of monitoring system to measure sound absorbing coefficient and structural stability of sound absorbing panel on the concrete track in the urban train tunnel. (사)한국터널지하공간학회, 19(01), 1-9, https://doi.org/10.9711/KTAJ.2017.19.1.001

Abstract

In this study, a test-bed system simulated a tunnel and concrete track is tested on cite and invested an allowed limit of multi-layered sound absorbing panel for reducing noise reflected on the concrete track in train tunnel considering the criteria and limitation on the theoretical back ground. The studied results are an effective evaluating system of the sound absorbing coefficient influenced fluid effects depending on the vehicle speed in the urban train tunnel and measuring not only structural behaviors of maximum displacement and acceleration of the panel but also dynamic characteristics of damping ratio and natural frequency.

keywords
콘크리트도상, 국소공명흡음판, 구조적 거동측정, 차량속도에 의해 증가되는 유동압력, 터널 내 유지관리항목, Concrete track, Sound absorbing panel, Structural behavior test, Increasing fluid pressure by the vehicle running speed, Maintenance criteria in tunnel

Reference

1.

1. Lee, D.H., Kwon, Y.P. (2004), “Estimation of the Absorption Performance of Multiple Layer Perforated Panel System by Transfer Matrix Method”, Science Direct, Journal of Sound and Vibration, Vol. 278, pp. 847-860.

2.

2. Lee, H.J., Oh, S.T., Lee, D.J. (2016), “An Optimal Mix Design of Sound Absorbing Block on Concrete Ballast in Urban Train Tunnel”, Journal of Korean Tunnel Underground Space Association, Vol. 18, No. 1, pp. 75-82.

3.

3. Morgan, P.A., Peeling, J. (2012), “Railway Noise Mitigation from Tunnels”, Technical Report, www.51m. co.uk/wp-content/uploads//Factsheet-04-nov-2012-Railway-Tunnels-Portals.pdf.

4.

4. Oh, S.T., Lee, D.J., Lee, D.H. (2016), “Structural Behavior Test and Specification of Sound Absorbing Panels on the Concrete Track”, Proceedings of 2016 autumn KSR Conference.

5.

5. Shimokura, R., Soeta, Y. (2011), “Characteristics of Train Noise in Above-Ground and Underground Stations with Side and Island Platforms”, Science Direct, Journal of Sound and Vibration, Vol. 330, pp. 16219-1633.

6.

6. Vogiatzis, K., Vanhonacker, P. (2015), “Noise Reduction in Urban LRT Networks by Combining Track Based Solutions”, Science of the Total Environment, http://dx.doi.org/10.1016/j.scitotenv. 2015.05.060.

7.

7. Yang, Y.S., Baek, D.S., Lee, D.H., Kim, J.C., Park, C.K. (2014), “An Experimental Study on the Multiple Layer Perforated Panel Sound Absorbing System for Railroad Noise Reduction”, International Symposium on Green Manufacturing and Applications Proceedings, pp. 117-119.

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