Materials and Structures

, Volume 49, Issue 7, pp 2701–2713 | Cite as

Damping properties of FRP cables for long-span cable-stayed bridges

  • Yaqiang Yang
  • Xin Wang
  • Zhishen Wu
  • Changhai Peng
Original Article


In this study, the damping properties of carbon fiber reinforced polymer (CFRP) and basalt fiber reinforced polymer (BFRP) cable potentially applied in long-span cable-stayed bridges were simulated and evaluated based on experimental data and theoretical derivations. The modal shapes were first identified according to a previous dynamic test on FRP cables, based on which the modal damping ratios of the in-plane vibration were estimated by the structural damping model of mode-dependence. Meanwhile, the modal damping ratios of the out-of-plane vibration were evaluated by the combined Rayleigh and frequency independent damping (CRFID) model. The results show that (1) the modified equation for the modal damping ratio validated by the results of in-plane vibration of the steel cable can be used for modeling the damping ratios of FRP cables, (2) the coefficients of dynamic strain damping energy of CFRP and BFRP cables were derived by backward calculating and fitting the experimental data, which can represent the damping difference among each material, and (3) the modal damping ratios of the out-of-plane modes of different stayed cables were fitted by the CRFID model and show good agreement with the test results.


FRP cables Super long-span cable-stayed bridge Model dynamic test Dynamic strain Modal shape 



The authors gratefully acknowledge the financial support provided by the National Key Basic Research Program of China, 973 Program (No. 2012CB026200), the National Science Foundation of China (NSFC, 51378109) and the National High Technology Research and Development Program of China (No. 2012AA03A204).


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Copyright information

© RILEM 2015

Authors and Affiliations

  • Yaqiang Yang
    • 1
  • Xin Wang
    • 1
    • 2
  • Zhishen Wu
    • 1
    • 2
  • Changhai Peng
    • 3
  1. 1.National and Local Unified Engineering Research Center for Basalt Fiber Production and Application Technology, International Institute for Urban Systems EngineeringSoutheast UniversityNanjingChina
  2. 2.Key Laboratory of C & PC Structures Ministry of EducationSoutheast UniversityNanjingChina
  3. 3.School of ArchitectureSoutheast UniversityNanjingChina

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