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Conference Paper: Constructing mode shapes of a girder bridge using responses of a moving vehicle under impact excitation

TitleConstructing mode shapes of a girder bridge using responses of a moving vehicle under impact excitation
Authors
KeywordsImpact excitation
Measurement noise
Mode shapes
Road surface roughness
Vehicle-bridge interaction
Issue Date2016
PublisherInternational Association for Bridge and Structural Engineering. The Journal's web site is located at http://www.iabse.org/publications/iabsereports/index.php
Citation
The 2016 IABSE Conference, Guangzhou, China, 8-11 May 2016. In IABSE Symposium Report, 2016, p. 180-187 How to Cite?
AbstractThe mode shapes of a bridge are important modal properties for many purposes. Traditional methods for constructing mode shapes often require installation of instruments on the bridge for collection of dynamic responses. However, these methods are not only costly but also inconvenient. Therefore a method for constructing the mode shapes of simply supported bridges based on Hilbert Transform is developed. By using the dynamic responses extracted from a moving vehicle, an algorithm is devised to construct the mode shapes. Compared with the traditional methods, the proposed method uses only the information from the moving vehicle. Moreover, additional impact excitation on the vehicle helps to excite the bridge. This helps to improve the accuracy. A numerical study is presented to discuss the effects of measurement noise, road surface roughness and vehicle speed on the accuracy of results.
DescriptionConference Theme: Bridges and Structures Sustainability - Seeking Intelligent Solutions
Persistent Identifierhttp://hdl.handle.net/10722/235308
ISBN
ISSN

 

DC FieldValueLanguage
dc.contributor.authorAu, FTK-
dc.contributor.authorQi, Z-
dc.date.accessioned2016-10-14T13:52:29Z-
dc.date.available2016-10-14T13:52:29Z-
dc.date.issued2016-
dc.identifier.citationThe 2016 IABSE Conference, Guangzhou, China, 8-11 May 2016. In IABSE Symposium Report, 2016, p. 180-187-
dc.identifier.isbn978-385748142-0-
dc.identifier.issn2221-3783-
dc.identifier.urihttp://hdl.handle.net/10722/235308-
dc.descriptionConference Theme: Bridges and Structures Sustainability - Seeking Intelligent Solutions-
dc.description.abstractThe mode shapes of a bridge are important modal properties for many purposes. Traditional methods for constructing mode shapes often require installation of instruments on the bridge for collection of dynamic responses. However, these methods are not only costly but also inconvenient. Therefore a method for constructing the mode shapes of simply supported bridges based on Hilbert Transform is developed. By using the dynamic responses extracted from a moving vehicle, an algorithm is devised to construct the mode shapes. Compared with the traditional methods, the proposed method uses only the information from the moving vehicle. Moreover, additional impact excitation on the vehicle helps to excite the bridge. This helps to improve the accuracy. A numerical study is presented to discuss the effects of measurement noise, road surface roughness and vehicle speed on the accuracy of results.-
dc.languageeng-
dc.publisherInternational Association for Bridge and Structural Engineering. The Journal's web site is located at http://www.iabse.org/publications/iabsereports/index.php-
dc.relation.ispartofIABSE Symposium Report-
dc.subjectImpact excitation-
dc.subjectMeasurement noise-
dc.subjectMode shapes-
dc.subjectRoad surface roughness-
dc.subjectVehicle-bridge interaction-
dc.titleConstructing mode shapes of a girder bridge using responses of a moving vehicle under impact excitation-
dc.typeConference_Paper-
dc.identifier.emailAu, FTK: francis.au@hku.hk-
dc.identifier.authorityAu, FTK=rp00083-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.2749/222137816819258447-
dc.identifier.scopuseid_2-s2.0-84979598140-
dc.identifier.hkuros269882-
dc.identifier.spage180-
dc.identifier.epage187-
dc.publisher.placeUnited States-
dc.customcontrol.immutablesml 161026-

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