A videogrammetric technique for measuring the vibration displacement of stay cables

Zhou, X; Xia, Y; Wei, Z; Wu, Q

Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7629

DC Field	Value	Language
dc.contributor	Department of Civil and Environmental Engineering	-
dc.creator	Zhou, X	-
dc.creator	Xia, Y	-
dc.creator	Wei, Z	-
dc.creator	Wu, Q	-
dc.date.accessioned	2015-08-28T04:30:56Z	-
dc.date.available	2015-08-28T04:30:56Z	-
dc.identifier.issn	1009-5020	-
dc.identifier.uri	http://hdl.handle.net/10397/7629	-
dc.language.iso	en	en_US
dc.publisher	Taylor & Francis Asia Pacific (Singapore)	en_US
dc.subject	Stay cable	en_US
dc.subject	Vibration	en_US
dc.subject	Displacement measurement	en_US
dc.subject	Videogrammetric technique	en_US
dc.subject	Tension force	en_US
dc.title	A videogrammetric technique for measuring the vibration displacement of stay cables	en_US
dc.type	Journal/Magazine Article	en_US
dc.identifier.spage	135	-
dc.identifier.epage	141	-
dc.identifier.volume	15	-
dc.identifier.issue	2	-
dc.identifier.doi	10.1080/10095020.2012.714105	-
dcterms.abstract	Stay cables in cable-stayed bridges are prone to large amplitude oscillations under external excitations. The vibration of the cables is predominantly measured by using accelerometers to measure the acceleration. The dynamic displacement is then usually obtained indirectly from the double integration of the acceleration data. This paper reports an experimental method of measuring the displacement of stayed cables using a digital video camera. With the newly developed videogrammetric technique, the video clips are transferred into image frames, from which the shape and location of the target are identified. The displacement time history is then captured. The technique is applied to a cable-stayed bridge to measure the dynamic displacement of stay cables. The displacement is compared with the acceleration data in the frequency and time domains. The results show that the displacement measured by the digital video camera is comparable to the counterparts integrated from the acceleration data. The vibration frequencies identified from the acceleration are finally used to estimate the tension forces of the cables. The results show that the tension forces have insignificant changes after one year’s operation.	-
dcterms.accessRights	open access	en_US
dcterms.bibliographicCitation	Geo-spatial information science (地球空间信息科学学报), 2012, v. 15, no. 2, p. 135-141	-
dcterms.isPartOf	Geo-spatial information science (地球空间信息科学学报)	-
dcterms.issued	2012	-
dc.identifier.eissn	1993-5153	-
dc.identifier.rosgroupid	r66208	-
dc.description.ros	2012-2013 > Academic research: refereed > Publication in refereed journal	-
dc.description.oa	Accepted Manuscript	en_US
dc.identifier.FolderNumber	OA_IR/PIRA	en_US
dc.description.pubStatus	Published	en_US
Appears in Collections:	Journal/Magazine Article

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