Abstract
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.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Rebelo, C., Simões Da Silva, L., Pircher, M.: Dynamic behavior of twin single-span ballasted railway bridges—field measurements and modal identification. Eng. Struct. 30(9), 2460–2469 (2008)
Ülker-Kaustell, M., Karoumi, R.: Application of the continuous wavelet transform on the free vibrations of a steel-concrete composite railway bridge. Eng. Struct. 33, 911–919 (2011)
Ülker-Kaustell, M., Karoumi, R.: Influence of rate-independent hysteresis on the dynamic response of a railway bridge. Int. J. Railw. Transp. 1(4), 237–257 (2013)
Ülker-Kaustell, M.: Essential modelling details in dynamic FE-analyses of railway bridges. TRITA-BKN Bulletin 120, KTH, Royal Institute of Technology (2013)
Bouc, R.: Forced vibration of mechanical systems with hysteresis. In: Proceedings of the Fourth International Conference on Nonlinear Oscillations, Prague, 5–9 September 1967
Wen, Y.K.: Method for random vibration of hysteretic systems. J. Eng. Mech. Div. ASCE 102(2), 249–263 (1976)
Dolce, M., Cardone, D., Croatto, F.: Frictional behavior of steel-PTFE interfaces for seismic isolation. Bull. Earthq. Eng. 3, 75–99 (2005)
Lomiento, G., Bonessio, N., Benzoni, G.: Friction model for sliding bearings under seismic excitation. J. Earthq. Eng. 17(8), 1162–1191 (2013)
Nikfar, F., Konstantinidis, D.: Effect of the stick-slip phenomenon on the sliding response of objects subjected to pulse excitation. J. Eng. Mech. ASCE (2016). doi:10.1061/(ASCE)EM.1943-7889.0001183
Constantinou, M.C., Mokha, A., Reinhorn, A.M.: PTFE bearings in base isolation: modelling. J. Earthq. Eng. 116(2), 455–472 (1990)
Acknowledgments
The authors gratefully acknowledge Tyréns AB and the Swedish Transport Administration for providing the financial support for this project.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG
About this paper
Cite this paper
Ülker-Kaustell, M., Boschmonar, G.F., Isusi, P.B., Trillkott, S., Kullberg, C., Karoumi, R. (2018). Modelling of Pot Bearings – A Preliminary Study. In: Conte, J., Astroza, R., Benzoni, G., Feltrin, G., Loh, K., Moaveni, B. (eds) Experimental Vibration Analysis for Civil Structures. EVACES 2017. Lecture Notes in Civil Engineering , vol 5. Springer, Cham. https://doi.org/10.1007/978-3-319-67443-8_29
Download citation
DOI: https://doi.org/10.1007/978-3-319-67443-8_29
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-67442-1
Online ISBN: 978-3-319-67443-8
eBook Packages: EngineeringEngineering (R0)