Abstract
This paper presents a full-scale dynamic testing on a simply supported railway bridge with integrated end-shields, by using a hydraulic exciter. Experimental frequency response functions are determined based on load controlled frequency sweeps. Apart from accurate estimates of natural frequencies, damping and mode shapes, the experimental testing also gives valuable information about the dynamic characteristics at resonance and amplitude dependent nonlinearities. Numerical models are used to simulate the dynamic response from passing trains which is compared to experimental testing of similar train passages. The results show that the bridge deck is partially constrained due to the interaction between the end-shields and the wing walls with the surrounding soil. Measurements at the supports also show that the flexibility of the foundation needs to be accounted for. An updated numerical model is able to accurately predict the response from passing trains. The response is lower than that predicted from the initial simulations and the bridge will fulfil the design requirements regarding vertical deck acceleration.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Andersson, A., Ülker-Kaustell, M., Borg, R., Dymén, O., Carolin, A., Karoumi, R.: Pilot testing of a hydraulic bridge exciter. In: EVACES 2015. Empa, Dübendorf, Switzerland (2015)
Grafe, H.: Model updating of large structural dynamics models using measured response functions. Doctoral Thesis, Imperial College, London, England (1998)
Östlund, J.: Soil-structure interaction of end-frames for high-speed railway bridges. Master Thesis, Royal Institute of Technology, Stockholm, Sweden (2016)
Acknowledgements
The development of the hydraulic exciter and the experimental campaign was performed by the first author together with Laboratory technicians Mr. Stefan Trillkott and Mr. Claes Kullberg, assisted by Ph.D. student Hesham Elgazzar and Ph.D. student Abbas Zangeneh Kamali. The work was co-funded by the Swedish Transport Administration and the KTH Railway Group.
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
Andersson, A., Östlund, J., Ülker-Kaustell, M., Battini, JM., Karoumi, R. (2018). Full-Scale Dynamic Testing of a Railway Bridge Using a Hydraulic Exciter. 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_30
Download citation
DOI: https://doi.org/10.1007/978-3-319-67443-8_30
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-67442-1
Online ISBN: 978-3-319-67443-8
eBook Packages: EngineeringEngineering (R0)