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An experimental study of cable tension identification based on measurements of mode shapes

An experimental study of cable tension identification based on measurements of mode shapes
Auteur(s): , ORCID, ,
Présenté pendant IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021, publié dans , pp. 1651-1657
DOI: 10.2749/ghent.2021.1651
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Cable tension identification based on mode shapes extracted from vibration measurements is a relatively new method. In this method, the cable is equivalent to a beam model hinged at its ends and un...
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Détails bibliographiques

Auteur(s): (Department of Bridge Engineering, Tongji University, Shanghai 200092, China)
ORCID (Department of Bridge Engineering, Tongji University, Shanghai 200092, China)
(Department of Bridge Engineering, Tongji University, Shanghai 200092, China)
(Liuzhou OVM Machinery Ltd., Liuzhou 545006, China‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021
Publié dans:
Page(s): 1651-1657 Nombre total de pages (du PDF): 7
Page(s): 1651-1657
Nombre total de pages (du PDF): 7
DOI: 10.2749/ghent.2021.1651
Abstrait:

Cable tension identification based on mode shapes extracted from vibration measurements is a relatively new method. In this method, the cable is equivalent to a beam model hinged at its ends and under axial tension with an unknown length to eliminate the effects of boundary conditions. This study focuses on the influences of sensor arrangement in the measurements on the accuracy of the tension identification. For this purpose, full-scale cable experiments have been carried out, where a number of sensors were attached to the cable to record cable acceleration during artificial excitation. The eigenvalue realization algorithm (ERA) has then been applied to identify the mode shapes and frequencies of the cables from the multiple acceleration measurements. The effects of different sensor arrangement schemes and cable tension identification method based on higher- order modes are compared and discussed.

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