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  5. Indirect Monitoring of Railway Bridges by Direct Integration
 
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Indirect Monitoring of Railway Bridges by Direct Integration

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Download 2018_Glasgow_Yifei_Indirect monitoring of railway bridges by direct integration.pdf432.3 KB
Author(s)
Keenahan, Jennifer 
O'Brien, Eugene J. 
Ren, Yifei 
Uri
http://hdl.handle.net/10197/10468
Date Issued
15 June 2018
Date Available
15T10:43:48Z May 2019
Abstract
Railway bridges are of importance as critical elements in transportation networks. Unfortunately, many railway bridges are old and these structures are subject to degradation over time. To monitor bridge structures, many methods are introduced. In recent years, indirect bridge monitoring methods have become more popular. These methods use passing vehicles to measure dynamic responses such as accelerations. In this paper, a new direct integration approach is introduced to directly calculate the apparent railway track profile (AP) that is consistent with the measured accelerations. An adaptation of the Newmark Beta numerical method is used for this purpose. Using AP, bridge displacement profile difference (BDPD) is calculated to monitor bridges. The BDPD is the difference between the baseline (healthy) profile and the apparent profile after damage and environmental effects. BDPD is sensitive to temperature change and bridge damage. It has its own frequency which is close to the bridge frequency.
Sponsorship
University College Dublin
Other Sponsorship
China Scholarship Council
Type of Material
Conference Publication
Publisher
ECCOMAS
Keywords
  • Railway

  • Bridges

  • SHM

  • Drive-by

  • Direct integration

  • Apparent profile

  • BDPD

Web versions
http://www.eccomas.org/vnews/1042/eccm-ecfd-conferences-2018-
Language
English
Status of Item
Not peer reviewed
Description
(Joint conferences) ECCM - ECFD 2018 6th European Conference on Computational Mechanics (Solids, Structures and Coupled Problems) and 7th European Conference on Computational Fluid Dynamics 11-15 June, 2018, Glasgow, United Kingdom
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Civil Engineering Research Collection
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752
Acquisition Date
Feb 5, 2023
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