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Remote monitoring to predict bridge scour failure using Interferometric Synthetic Aperture Radar (InSAR) stacking techniques

Selvakumaran, Sivasakthy and Plank, Simon and Geiß, Christian and Rossi, Cristian and Campbell, Middleton (2018) Remote monitoring to predict bridge scour failure using Interferometric Synthetic Aperture Radar (InSAR) stacking techniques. International Journal of Applied Earth Observation and Geoinformation, 73, pp. 463-470. Elsevier. doi: 10.1016/j.jag.2018.07.004. ISSN 0303-2434.

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Official URL: https://doi.org/10.1016/j.jag.2018.07.004


Scour is the removal of ground material in water bodies due to environmental changes in water flow. It particularly occurs at bridge piers and the holes formed can make bridges susceptible to collapse. The most common cause of bridge collapse is due to scour occurring during flooding, some failures causing loss of life and most resulting in significant transport disruption and economic loss. Consequently, failure of bridges due to scour is of great concern to bridge asset owners, and is currently very difficult to predict since conventional assessment methods foresee very resource-demanding monitoring efforts in situ. This paper presents evidence of how InSAR techniques can be used to monitor bridges at risk of scour, using Tadcaster Bridge, England, as a case study. Tadcaster Bridge suffered a partial collapse due to river scour on the evening of December 29th, 2015 following a period of severe rainfall and flooding. 48 TerraSAR-X scenes over the bridge from the two-year period prior to the collapse are analysed using the small baseline subset (SBAS) interferometric synthetic aperture radar (InSAR) approach. The study highlights a distinct movement in the region of the bridge where the collapse occurred prior to the actual event. This precursor to failure observed in the data over a month before actual collapse suggests the possible use of InSAR as a means of an early warning system in structural health monitoring of bridges at risk of scour.

Item URL in elib:https://elib.dlr.de/121228/
Document Type:Article
Title:Remote monitoring to predict bridge scour failure using Interferometric Synthetic Aperture Radar (InSAR) stacking techniques
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Selvakumaran, SivasakthyUniversity of CambridgeUNSPECIFIED
Plank, Simonsimon.plank (at) dlr.deUNSPECIFIED
Geiß, Christianchristian.geiss (at) dlr.deUNSPECIFIED
Rossi, CristianSatellite Applications Catapult, UKUNSPECIFIED
Campbell, MiddletonUniversity of CambridgeUNSPECIFIED
Date:July 2018
Journal or Publication Title:International Journal of Applied Earth Observation and Geoinformation
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1016/j.jag.2018.07.004
Page Range:pp. 463-470
Keywords:Differential SAR interferometry, TerraSAR-X, Bridge collapse, Bridge failure, Structural monitoring, Scour
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Remote Sensing and Geo Research
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Geo Risks and Civil Security
Deposited By: Plank, Simon Manuel
Deposited On:01 Aug 2018 19:53
Last Modified:19 Nov 2021 20:49

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