In-Car Noise Control for Epping to Chatswood Rail Link
Sydney’s Epping to Chatswood Rail Link (ECRL) is a landmark rail tunnel project (12.5 km long) which opened to the public in 2009. During commissioning, in-car passenger noise levels within older style non-air-conditioned trains were found to exceed 100dBA at some locations.
Several noise mitigation strategies were optimised and implemented within a short timeframe to reduce in-car noise levels by an average of 10dBA. These included a new rail grinding technique, installation of additional sound absorptive panels on the walls and between the rails, and rail dampers (in a tunnel environment).
This paper presents a summary of the works undertaken to mitigate in-car noise, calculation methods and achieved noise reductions.
KeywordsNoise Level Sound Absorption Reverberation Time Generation Train Ballast Track
Unable to display preview. Download preview PDF.
- 1.CityRail Website. CityRail Fleet Information, http://www.cityrail.info/about/fleet/
- 2.International Standards Organisation: ISO 3381:2005 Railway applications – Acoustics – Measurement of noise inside railbound vehicles (2005) Google Scholar
- 3.Frommer, G.H.: Handbook of Noise and Vibration, ch. 96 (2007) Google Scholar
- 4.American Public Transit Association (APTA) Noise and Vibration Guidelines (1981)Google Scholar
- 6.Poisson, F., Boullet, I.: The loudness: a new indicator to specify the acoustic comfort inside trains. In: Proceedings of the 8th World Congress on Railway Research (WCRR 2008), Seoul, Korea (2008)Google Scholar
- 7.Thrane, H.W.: Handbook of Noise and Vibration, ch. 97 (2007) Google Scholar
- 8.Anderson, D., Weber, C.: Recent developments in operational rail noise and vibration in NSW, Australia. In: Proceedings of the 9th International Workshop on Railway Noise (IWRN9), Munich, Germany (2007)Google Scholar