Title
A calculation model for the noise from steel railway bridges
Author
Janssens, M.H.A.
Thompson, D.J.
Technisch Physische Dienst TNO - TH
Publication year
1996
Abstract
The sound level of a train crossing a steel railway bridge is usually about 10 dB higher than on plain track. In the Netherlands there are many such bridges which, for practical reasons, cannot be replaced by more intrinsically quiet concrete bridges. A computational model is described for the estimation of noise levels due to a train crossing a steel bridge. Despite the complexity and diversity of bridge structures, a highly simplified model of the bridge structure is used. An estimate of the noise emitted by wheel and rail is also incorporated. Comparisons with measurements on a number of typical bridges shows very good agreement. It is found that the increase in noise at a bridge is caused not only by the noise emission from the bridge structure itself, but also by increased noise radiation by the rail and a modified sound transmission from bridge to receiver. It is possible, in close collaboration with designers, to use the model in optimizing bridge structures. The model is also intended to complement the Dutch statutory prediction schemes for railway noise.
Subject
Traffic
Acoustic noise measurement
Acoustic wave transmission
Computer simulation
Parameter estimation
Railroad bridges
Railroad rolling stock
Railroad tracks
Vehicle wheels
Computational models
Noise emission
Noise levels
Noise radiation
Sound transmission
Steel railway bridges
Acoustic noise
To reference this document use:
http://resolver.tudelft.nl/uuid:b20863b6-650f-4815-8f99-e3e03639a581
TNO identifier
233328
Publisher
Academic Press, London, UK
ISSN
0022-460X
Source
Journal of Sound and Vibration, 193 (1), 295-305
Document type
article