Damping Behavior of Hybrid Fiber-Reinforced Polymer Cable with Self-Damping for Long-Span Bridges
Publication: Journal of Bridge Engineering
Volume 22, Issue 7
Abstract
This paper studies the vibration characteristics and damping properties of a newly developed fiber-reinforced polymer (FRP) cable with a self-damping function using a model vibration experiment. To verify the self-damping effect of the designed FRP cable, the scaled model vibration test of the FRP cable was designed according to the real cables of the Su-tong Bridge. The damping properties of the FRP cable with self-damping were studied by excitation with small amplitude, middle amplitude, and high amplitude, respectively. The experimental results show that the model vibration test, designed based on similarity criteria, could effectively simulate the vibration characteristics of the real cable according to the experimental results of the natural frequencies. The properties of the energy dissipation of the self-damping FRP cable were superior to those of the FRP cable without self-damping based on the comparison of the modal damping ratios. Furthermore, the modal damping ratios of the FRP cable with self-damping increase with the vibration amplitude of the cable, indicating that the designed FRP cable can efficiently dissipate vibration energy with respect to the vibration amplitude.
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Acknowledgments
The authors gratefully acknowledge the financial support provided by the Key Consulting Project of Chinese Academy of Engineering (Grant 2016-XZ-13), the National Twelfth Five-year Plan Science & Technology Support Development Program of China (Grant 2014BAB15B01), and the National Science Foundation of China (NSFC) (Grant 51378109).
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Published In
Journal of Bridge Engineering
Volume 22 • Issue 7 • July 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Sep 26, 2016
Accepted: Jan 24, 2017
Published online: Apr 20, 2017
Published in print: Jul 1, 2017
Discussion open until: Sep 20, 2017
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