A Numerical Model for Re-radiated Noise in Buildings from Underground Railways

DOI: 10.1007/978-3-540-74893-9_16

ABSTRACT A numerical prediction model is developed to quantify vibrations and re-radiated noise due to underground railways. A coupled
FE-BE model is used to compute the incident ground vibrations due to the passage of a train in the tunnel. This source model
accounts for three-dimensional dynamic interaction between the track, tunnel and soil. The incident wave field is used to
solve the dynamic soil-structure interaction problem on the receiver side and to determine the vibration levels along the
essential structural elements of the building. The soil-structure interaction problem is solved by means of a 3D boundary
element method for the soil coupled to a 3D finite element method for the structural part. An acoustic 3D spectral finite
element method is used to predict the acoustic response. The Bakerloo line tunnel of London Underground has been modelled
using the coupled periodic FE-BE approach. The free-field response and the re-radiated noise in a portal frame office building
is predicted.


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May 21, 2014