The Research of Noise Characteristics on Shenzhen Metro Platform

Abstract:

The noise SPL and spectrum characteristics were tested and analyzed for the Shenzhen metro platform when the metro is inbound and outbound by using the noise and vibration measurement and analysis system. Time-domain SPL distribution diagrams shows, causing the largest noise level inside platform is mainly from the station radio, when no station radio, metro wheel-rail noise and air-conditioning fan noise have become a major SPL source in platform. The noise level at the platform is between 73dB-76dB. Frequency domain noise spectrum diagram shows, the noise SPL peak appeared in both low frequency and mid frequency ranges. Low frequency noise peak appears at 125Hz and 250Hz frequency band, mainly from the site of passengers talking and footsteps. Mid frequency noise peak is located in the 500Hz-1000Hz range, mainly from station radio, metro wheel-rail noise and air-conditioning fan and so on. This study provides a reference for noise reduction design of the metro platform.

• Periodical: Applied Mechanics and Materials (Volume 741)
• Pages: 426-430
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.741.426
• Online since: March 2015
• Authors: Jian Hui Tian, Bing Li*, Lian Jian
• Keywords: Metro Platform, Noise, Spectrum Analysis

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