PREDICTION OF ROAD TRAFFIC NOISE AROUND TUNNEL MOUTH
Prediction of road traffic noise in the vicinity of a road tunnel mouth has been one of the most difficult problems. The build-up noise in the tunnel radiates towards outside the mouth. A practical calculation model for this noise radiation is developed in this paper which is based upon a sound energy balance inside the tunnel. Two imaginary sources are assumed. One is a point source that represents a direct sound from a vehicle in the tunnel. The other is a surface source that represents residual sound with multiple reflection between the walls of the tunnel. Results of sound pressure level (LAeq) measurements at a highway tunnel show good agreement with an accuracy of less than 2dB between the calculated and the measured. It is shown that this model is also applicable to road traffic noise around a tunnel with a noise control of absorptive treatment on the walls. For the covering abstract see ITRD E107776.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/2951561946
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Corporate Authors:
SOCIETE FRANCAISE D'ACOUSTIQUE
23 AVENUE BRUNETIERE
PARIS, France 75017 -
Authors:
- Takagi, K
- Miyake, T
- Yamamoto, K
- TACHIBANA, H
- Conference:
- Publication Date: 2000
Language
- English
Media Info
- Features: References;
- Pagination: p. 3099-104
Subject/Index Terms
- TRT Terms: Calculation; Forecasting; Measurement; Noise; Traffic; Tunnels
- ITRD Terms: 6464: Calculation; 132: Forecast; 6136: Measurement; 2492: Noise; 755: Traffic; 3374: Tunnel
- Subject Areas: Bridges and other structures; Environment; Operations and Traffic Management;
Filing Info
- Accession Number: 00807901
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 2-9515619-4-6
- Files: ITRD
- Created Date: Apr 4 2001 12:00AM