Railway Bridge Condition Monitoring Using Numerically Calculated Responses from Batches of Trains
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|Title:||Railway Bridge Condition Monitoring Using Numerically Calculated Responses from Batches of Trains||Authors:||Ren, Yifei; O'Brien, Eugene J.; Cantero, Daniel; Keenahan, Jennifer||Permanent link:||http://hdl.handle.net/10197/12969||Date:||14-May-2022||Online since:||2022-07-04T15:36:25Z||Abstract:||This study introduces a novel method to determine apparent profile of the track and detect railway bridge condition using sensors on in-service trains. The concept uses a type of Inverse Newmark-β integration scheme on data from a batch of trains. In a self-calibration process, an optimization algorithm is used to find vehicle dynamic properties and speed. For bridge health monitoring, the apparent profile of the bridge is first determined, i.e., the true profile plus components of ballast and bridge deflection under the moving train. The apparent profile is used, in turn, to calculate the moving reference deflection influence line, i.e., the deflection due to a moving (static) unit load. The moving reference influence line is shown to be a good indicator of bridge stiffness. This numerical approach is assessed using an elaborate finite element model operated by an independent research group. The results show that the moving reference influence line can be found accurately and that it constitutes an effective indicator of the condition of a bridge.||Funding Details:||University College Dublin||Funding Details:||Chinese Scholarship Council||Type of material:||Journal Article||Publisher:||MDPI||Journal:||Applied Sciences||Volume:||12||Issue:||10||Start page:||1||End page:||24||Copyright (published version):||2022 The Authors||Keywords:||Drive-by; Optimisation; Track profile; Bridge damage; Apparent profile; Moving reference; Influence line||DOI:||10.3390/app12104972||Language:||en||Status of Item:||Peer reviewed||ISSN:||2076-3417||This item is made available under a Creative Commons License:||https://creativecommons.org/licenses/by/3.0/ie/|
|Appears in Collections:||Civil Engineering Research Collection|
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