Experimental Study of Vibration Characteristics of FRP Cables for Long-Span Cable-Stayed Bridges
Publication: Journal of Bridge Engineering
Volume 20, Issue 4
Abstract
This study describes an investigation of vibration characteristics of carbon fiber-reinforced polymer (CFRP) and basalt FRP (BFRP) cables that can potentially be used in long-span cable-stayed bridges, compared with the traditional steel cable. Reduced-scale cable models were designed using similarity criteria and verified by examination of their dynamic characteristics. In-plane and out-of-plane vibration experiments on model cables were conducted using the step excitation method. The natural frequencies and modal damping of the cables were analyzed further, and the modeling of the damping ratios was studied using Rayleigh’s method. The results indicate that (1) the model cables well represent the dynamic properties, i.e., the equivalent natural frequencies of real long-span cables; (2) the probability of cable-deck resonance of bridges with FRP cables is lower than that of bridges with steel cables; (3) the damping properties of FRP are complex because of their inherent nonlinear material characteristics, but the equivalent damping of in-plane vibration of FRP cables is generally much larger than that of steel cables, whereas the equivalent damping of out-of-plane vibration of FRP cables is smaller than that of steel cables; and (4) the modal damping ratio of out-of-plane vibration can be accurately simulated by Rayleigh damping.
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Acknowledgments
The authors gratefully acknowledge the financial support of the National Key Basic Research Program of China (973 Program, No. 2012CB026200), the National Science Foundation of China (NSFC, No. 51108074 and No. 51378109), and the Jiangsu NSF (No. BK2010015).
References
American Concrete Institute (ACI). (2004). “Guide test methods for fiber-reinforced polymers (FRPs) for reinforcing or strengthening concrete structures.” ACI 440.3R-04, Farmington Hills, MI.
Caetano, E. D. S. (2007). Cable vibrations in cable-stayed bridges, International Association for Bridge and Structural Engineering (IABSE), Zurich, Switzerland.
Chen, Y., Xu, Y., Sun, B., Lou, W., Ni, Y., and Ko, J. (2005). “Experimental study on vibration control of non-linear hysteretic isolator-cable system.” Sys. Eng. Theor. Pract., 7(7), 67–74.
Chowdhury, I., and Dasgupta, S. P. (2003). “Computation of Rayleigh damping coefficients for large systems.” Electron. J. Geotech. Eng., 8(2), 21–31.
Irvine, H. M. (1978). “Free vibrations of inclined cables.” J. Struct. Div., 104(2), 343–347.
ISO. (1974). “Steel wire ropes for general purposes—Determination of actual breaking load.” ISO 3108-1974, Geneva.
Kou, C., Xie, X., Gao, C., and Huang, J. (2005). “Static behavior of long-span cable-stayed bridges using carbon fiber composite cable.” J. Zhejiang Univ., 39(1), 137–142.
Mehrabi, A. B., and Tabatabai, H. (1998). “Unified finite difference formulation for free vibration of cables.” J. Struct. Eng., 1313–1322.
Meier, U. (1987). “Proposal for a carbon fibre reinforced composite bridge across the Strait of Gibraltar at its narrowest site.” Proc. Inst. Mech. Eng. B J. Eng. Manuf., 201(2), 73–78.
Morse, P. M. (1986). Theoretical acoustics, Princeton University Press, Princeton, NJ.
Triantafyllou, M. S., and Grinfogel, L. (1986). “Natural frequencies and modes of inclined cables.” J. Struct. Eng., 139–148.
Wang, X., and Wu, Z. (2010a). “Evaluation of FRP and hybrid FRP cables for super long-span cable-stayed bridges.” Compos. Struct., 92(10), 2582–2590.
Wang, X., and Wu, Z. (2010b). “Integrated high-performance thousand-metre scale cable-stayed bridge with hybrid FRP cables.” Composites Part B, 41(2), 166–175.
Wang, X., and Wu, Z. (2011a). “Modal damping evaluation of hybrid FRP cable with smart dampers for long-span cable-stayed bridges.” Compos. Struct., 93(4), 1231–1238.
Wang, X., and Wu, Z. (2011b). “Vibration control of different FRP cables in long-span cable-stayed bridge under indirect excitations.” J. Earthquake Tsunami, 5(2), 167–188.
Wang, X., Wu, Z., Wu, G., Zhu, H., and Zen, F. (2013). “Enhancement of basalt FRP by hybridization for long-span cable-stayed bridge.” Composites Part B, 44(1), 184–192.
Wu, Z., Wang, X., and Wu, G. (2009). “Basalt FRP composite reinforcements in infrastructure.” Proc., 17th Annual Int. Conf. on Composites/Nano Engineering (ICCE-17), International Conference on Composites/Nano Engineering (ICCE), New Orleans, 21–24.
Wu, Z. S., and Wang, X. (2008). “Investigation on a 1000-m scale cable-stayed bridge with fiber composite cable.” Proc., 4th Int. Conf. on FRP Composite in Civil Engineering, International Institute for FRP in Construction (IIFC), Zurich, Switzerland, 1–6.
Xie, X., Kao, C., Kou, C., and Huang, J. (2005). “Dynamic characteristics of long-span cable-stayed bridges using carbon fiber composite cable.” J. Zhejiang Univ., 39(5), 728–733.
Xie, X., Nakamura, H., Maeda, K., Zhang, Z., and Enomoto, T. (2010). “Theoretical analysis and experimental test on damping characteristics of CFRP stayed cables.” Eng. Mech., 27(3), 205–211.
Xie, X., and Zhu, Y. (2007). “Study on behavior of long-span CFRP cable-stayed bridges.” Eng. Mech., 24(11), 113–120.
Zhang, X., and Chen, A. (2010). Kilometer-scale cable stayed bridge: Structural system, performance and design, China Communications Press, Beijing.
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© 2014 American Society of Civil Engineers.
History
Received: Jan 6, 2014
Accepted: May 19, 2014
Published online: Jun 30, 2014
Published in print: Apr 1, 2015
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