Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2002.05a
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- Pages.603-608
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- 2002
A Study on Curving noise control by absorption treatment in Urban Rail Transit System
흡음에 의한 도시철도 곡선부 소음저감에 관한 연구
Abstract
Sound absorbing materials are applied to the exposed surfaces of curved subway tunnel for the reduction of curving noise level. Before the treatment, acoustical engineering simulation is performed to predict the noise level reduction for different kinds and amounts of absorbing material. The principle of geometrical acoustics is utilized to Peform the simulation efficiently and accurately. The noise levels of the inside and outside of running car body are measured to find the noise level reduction. The average noise level reduction of 8 ㏈ has been attained. It has been shown that the simulated results are comparable to the measured ones.
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