Connolly, DP, Galvín, P, Olivier, B et al. (2 more authors) (2019) A 2.5D time-frequency domain model for railway induced soil-building vibration due to railway defects. Soil Dynamics and Earthquake Engineering, 120. pp. 332-344. ISSN 0267-7261
Abstract
A new hybrid time-frequency modelling methodology is proposed to simulate the generation of railway vibration caused by singular defects (e.g. joints, switches, crossings), and its propagation through the track, soil and into nearby buildings. To create the full source-to-received model, first the force density due to wheel-rail-defect interaction is calculated using a time domain finite element vehicle-track-soil model. Next, the frequency domain track-soil transfer function is calculated using a 2.5D boundary/finite element approach and coupled with the force densities to recover the free-field response. Finally, the soil-structure interaction of buildings close to the line is computed using a time domain approach. The effect of defect type, train speed and building type (4-storey office block and 8-storey apartment building) on a variety of commonly used international vibration metrics (one-third octaves, PPV, MTVV) is then investigated. It is found that train speed doesn't correlate with building vibration and different defect types have a complex relationship with vibration levels both in the ground and buildings. The 8-storey apartment building has a frequency response dominated by a narrow frequency range, whereas the modal contribution of the 4-storey office building is over a wider frequency band. This results in the 8-storey building having a higher response.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Elsevier Ltd. This is an author produced version of a paper published in Soil Dynamics and Earthquake Engineering. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Switches-crossings-joints; Railway singular defects; Ground-borne vibration; Building vibration; 2.5D finite element railroad track; Structure-borne rail vibration; Rail vehicle dynamics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 21 Mar 2019 11:17 |
Last Modified: | 28 Feb 2020 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.soildyn.2019.01.030 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:143958 |