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dc.contributor.authorSelvakumaran, Sakthy
dc.contributor.authorSadeghi, Zahra
dc.contributor.authorCollings, Matthew
dc.contributor.authorRossi, Cristian
dc.contributor.authorWright, Tim
dc.contributor.authorHooper, Andrew
dc.date.accessioned2022-01-29T00:30:17Z
dc.date.available2022-01-29T00:30:17Z
dc.date.issued2022-06-01
dc.identifier.issn2397-8759
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/333400
dc.description.abstractAsset owners responsible for the management and maintenance of bridges value the collection of data which can be processed into useful information to inform decisions about future management of structures. Installing, powering and receiving data from sensors is not always convenient or possible, but satellite monitoring may provide the ability to measure bridge movements and thus provide an indication of potential problems for asset owners to take action on. This study presents the results of satellite monitoring of the Hammersmith Flyover, London, using the Interferometric Synthetic Aperture Radar (InSAR) technique. Sentinel-1 (free) and COSMO-SkyMed (commercial) satellite radar data was processed to provide millimetre-scale measurements of the Flyover and surrounding region and validated with in-situ sensor measurements. A method was developed for selecting and comparing InSAR measurements with in-situ displacement and temperature measurements, making use of bridge geometrical and structural modelling information. The results compare in-situ sensor measurements with remote InSAR measurements and show the suitability of such measurements in measuring thermal expansion for some (but not all) bridge assets. The proposed techniques, illustrated with the case study of Hammersmith Flyover, will enable asset owners to collect regular measurements of bridge movements to complement and add value to current inspection methods and potentially give early warning to defective bridge bearings.
dc.description.sponsorshipCentre for Digital Built Britain (part of the Construction Innovation Hub)
dc.publisherICE publishing
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.titleComparison of in-situ and InSAR monitoring for the assessment of bridge thermal expansion
dc.typeArticle
dc.publisher.departmentNewnham College
dc.date.updated2022-01-27T18:43:04Z
prism.publicationNameProceedings of the Institution of Civil Engineers - Smart Infrastructure and Construction
dc.identifier.doi10.17863/CAM.80824
dcterms.dateAccepted2022-01-26
rioxxterms.versionofrecord10.1680/jsmic.21.00008
rioxxterms.versionAM
dc.contributor.orcidSelvakumaran, Sakthy [0000-0002-8591-0702]
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEPSRC (1636878)
pubs.funder-project-idEPSRC (1636878)
cam.issuedOnline2022-03-29
cam.orpheus.success2022-05-05: updated embargo lift date
cam.orpheus.counter6
cam.depositDate2022-01-27
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
rioxxterms.freetoread.startdate2023-04-11


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