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Modelling of Pot Bearings - A Preliminary Study
Tyrens AB, Stockholm, Sweden..
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
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2018 (English)In: EXPERIMENTAL VIBRATION ANALYSIS FOR CIVIL STRUCTURES: TESTING, SENSING, MONITORING, AND CONTROL / [ed] Conte, JP Astroza, R Benzoni, G Feltrin, G Loh, KJ Moaveni, B, SPRINGER INTERNATIONAL PUBLISHING AG , 2018, p. 343-353Conference paper, Published paper (Refereed)
Abstract [en]

Previous research indicates that roller and pot bearings may give rise to considerable non-linear effects in certain bridges. These effects appear as variations in natural frequency, mode shape and modal damping ratio, depending on the amplitude of vibration. At small amplitudes of vibration, it seems reasonable to assume that the rolling or sliding mechanism is inactive, thus yielding a stiffer structure and no additional dissipation of energy due to friction. At slightly larger amplitudes of vibration, although still remaining small with respect to geometrical non-linearity, the rolling or sliding mechanism activates, whereby the corresponding constraints are relieved. At the same time, because of the rolling or sliding friction, a certain amount of energy dissipates to the surroundings. In order to improve our understanding of these mechanisms and their practical implications, a preliminary experimental study has been performed with the aim of developing a simple model of these mechanisms, which can be included in theoretical models of bridges and other structures. In this paper, we give a short description of the outcome of our laboratory tests and the status of our model development process.

Place, publisher, year, edition, pages
SPRINGER INTERNATIONAL PUBLISHING AG , 2018. p. 343-353
Series
Lecture Notes in Civil Engineering, ISSN 2366-2557 ; 5
Keywords [en]
Bridges, Pot bearings, Friction, Laboratory tests, Non-linear modes of vibration
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-242274DOI: 10.1007/978-3-319-67443-8_29ISI: 000455235800029Scopus ID: 2-s2.0-85060250849ISBN: 978-3-319-67443-8 (print)ISBN: 978-3-319-67442-1 (print)OAI: oai:DiVA.org:kth-242274DiVA, id: diva2:1284850
Conference
International Conference on Experimental Vibration Analysis for Civil Engineering Structures (EVACES), JUL 12-14, 2017, Univ California San Diego, San Diego, CA
Note

QC 20190201

Available from: 2019-02-01 Created: 2019-02-01 Last updated: 2019-02-01Bibliographically approved

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Boschmonar, Gabriel F.Isusi, Pablo B.Trillkott, StefanKullberg, ClaesKaroumi, Raid
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