Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Damping determination of FRP-confined reinforced concrete columns

  • Li, Xiaoran (Department of Civil Engineering, Beijing Jiaotong University) ;
  • Wang, Yuanfeng (Department of Civil Engineering, Beijing Jiaotong University) ;
  • Su, Li (Department of Civil Engineering, Beijing Jiaotong University)
  • Received : 2013.08.21
  • Accepted : 2014.05.23
  • Published : 2014.08.25
⟨ Previous Next ⟩

Abstract

Damping as a material property plays an important role in decreasing dynamic response of structures. However, very little is known about the evaluation and application of the actual damping of Fiber Reinforced Polymer Confined Reinforced Concrete (FRP-C RC) material which is widely adopted in civil engineering at present. This paper first proposes a stress-dependent damping model for FRP-C RC material using a validated Finite Element Model (FEM), then based on this damping-stress relation, an iterative scheme is developed for the computations of the non-linear damping and dynamic response of FRP-C RC columns at any given harmonic exciting frequency. Numerical results show that at resonance, a considerable increase of the loss factor of the FRP-C RC columns effectively reduces the dynamic response of the columns, and the columns with lower concrete strength, FRP volume ratio and axial compression ratio or higher longitudinal reinforcement ratio have stronger damping values, and can relatively reduce the resonant response.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation

References

  1. Saadatmanesh, H., Ehsani, M.R. and Jin, L. (1996), "Seismic strengthening of circular bridge pier models with fiber composites", ACI Struct. J., 93(6), 639-647.
  2. Seible, F., Priestley, M.J.N., Hegemier, G.A. and Innamorato, D. (1997), "Seismic retrofit of RC columns with continuous carbon fiber jackets", J. Compos. Constr., 1(2), 52-62. https://doi.org/10.1061/(ASCE)1090-0268(1997)1:2(52)
  3. Iacobucci, R.D., Sheikh, S.A. and Bayrak, O. (2003), "Retrofit of square concrete columns with carbon fiber-reinforced polymer for seismic resistance", ACI Struct. J., 100(6), 785-794.
  4. Haroun, M.A. and Elsanadedy, H.M. (2005), "Behavior of cyclically loaded squat reinforced concrete bridge columns upgraded with advanced composite-material jackets", J. Bridge. Eng., 10(6), 741-748. https://doi.org/10.1061/(ASCE)1084-0702(2005)10:6(741)
  5. Yalcin, C., Kaya, O. and Sinangil, M. (2008), "Seismic retrofitting of RC columns having plain bars using CFRP sheets for improved strength and ductility", Constr. Build. Mater., 22(3), 295-307. https://doi.org/10.1016/j.conbuildmat.2006.08.017
  6. Zhu, Z.Y., Ahmad, I. and Mirmiran, A. (2006), "Fiber element modeling for seismic performance of bridge columns made of concrete-filled FRP tubes", Eng. Struct., 28, 2023-2035. https://doi.org/10.1016/j.engstruct.2006.03.031
  7. Jerome, D.M. and Ross, C.A. (1997), "Simulation of the dynamic response of concrete beams externally reinforced with carbon-fiber reinforced plastic", Comput. Struct., 64(5/6), 1129-1153. https://doi.org/10.1016/S0045-7949(97)00022-9
  8. Capozucca, R., and Nild, Cerri, M. (2002), "Static and dynamic behavior of RC beam model strengthened by CFRP-sheets", Constr. Build. Mater., 16(2), 91-99. https://doi.org/10.1016/S0950-0618(01)00036-8
  9. Meftah, S. A., Yeghnem, R., Tounsi, A. and Adda, bedia, E.A. (2007), "Seismic behavior of RC coupled shear walls repaired with CFRP laminates having variable fibers spacing", Constr. Build. Mater., 21, 1661-1671. https://doi.org/10.1016/j.conbuildmat.2006.05.011
  10. Lazan, B.J. (1982), "Damping of material and members in structural mechanics", Pergamon press, London. (1968)
  11. Kume, Y., Hashimoto, F. and Maeda, S. (1982), "Material damping of cantilever beams", J. Sound. Vib., 80(1), 1-10. https://doi.org/10.1016/0022-460X(82)90386-8
  12. Newmark, N.M. and Hall, W.J. (1969), "Seismic design criteria for nuclear reactor facilities", Proceeding of the 4th International Conference on Earthquake Engineering, Santiago, Chile, 37-50.
  13. Audenino, A.L. and Calderale, P.M. (1996), "Measurement of non-linear internal damping in metals: processing of decay signals in a uniaxial stress field." J. Sound. Vib., 198(4), 395-409. https://doi.org/10.1006/jsvi.1996.0578
  14. Audenino, A.L., Zanetti, E.M. and Calderale, P.M. (1998), "Assessment of internal damping in uniaxially stressed metals: exponential and autoregressive methods", J. Dyn. Syst. Meas. Contr., 120(2), 177-184. https://doi.org/10.1115/1.2802407
  15. Audenino, A.L., Crupi, V. and Zanetti, E.M. (2003), "Correlation between thermography and internal damping in metals", Int. J. Fatigue., 25, 343-351. https://doi.org/10.1016/S0142-1123(02)00137-8
  16. Gounaris, G.D. and Anifantis, N.K. (1999), "Structural damping determination by finite element approach", Comput. Struct., 73, 445-452. https://doi.org/10.1016/S0045-7949(98)00257-0
  17. Gounaris, G.D., Antonakakis, E. and Papadopoulos, C.A. (2007), "Hysteretic damping of structures vibrating at resonance: An iterative complex eigensolution method based on damping-stress relation", Comput. Struct., 85, 1858-1868. https://doi.org/10.1016/j.compstruc.2007.02.026
  18. Liu, H.Z., Wang, J.P., Zhang, Z.M., Yuan, D.N. and Liu, L.L. (2005), "Strain-dependent nonlinear damping and application to dynamic analysis of elastic linkage mechanism", J. Sound. Vib., 281, 399-408. https://doi.org/10.1016/j.jsv.2004.03.033
  19. Wen, J. and Wang, Y.F. (2005), "The influence of damping change on dynamic response of concrete-filled steel tubular arch bridges", Proceeding of the4th Int. Conference on Advances in Steel Structures, Shanghai, China.
  20. Wang, Y.F. and Li, P. (2008), "Analysis of influence of material damping on the dynamic response of reinforced concrete frame structures", China. Civil Eng. J., 41(11), 39-43.
  21. Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain model for FRP-confined concrete", Constr. Build. Mater., 17, 471-489. https://doi.org/10.1016/S0950-0618(03)00045-X
  22. Lam, L. and Teng, J.G. (2003), "Design-oriented stress-strain model for FRP-confined concrete in rectangular columns", J. Reinf. Plast. Comp., 22(13), 1149-1186. https://doi.org/10.1177/0731684403035429
  23. Taucer, F.F., Spaone, E. and Filippou, F.C. (1991), "A fiber beam-column element for seismic response analysis of reinforced concrete structures", Earthquake Engineering Research Center, University of California, Berkeley.
  24. Scott, B.D., Park, R. and Priestley, M. (1982), "Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates", ACI J., 79(1), 13-27.
  25. Filippou, F.C., Popov, E.P. and Bertero, V.V. (1983), "Effects of bond deterioration on hysteretic behavior of reinforced concrete joints", Earthq. Eng.Res. Center, University of California, Berkeley.
  26. Yoneda, K., Kawashima, K. and Shoji, G. (2001), "Seismic retrofit of circular reinforced bridge columns by wrapping of carbon fiber sheets", J. Struct. Mech. Earthq. Eng., 682, 41-56.
  27. Ye, L.P., Zhang, K., Zhao, S.H. and Feng, P. (2003), "Experimental study on seismic strengthening of RC columns with wrapped CFRP sheets", Constr. Build. Mater., 17, 499-506. https://doi.org/10.1016/S0950-0618(03)00047-3
  28. Tao, Z. and Yu, Q. (2006), "New type composite structure column-the experiment, theory and methods", Science press, Beijing, 317-351.

Cited by

  1. Buckling of concrete columns retrofitted with Nano-Fiber Reinforced Polymer (NFRP) vol.18, pp.5, 2016, https://doi.org/10.12989/cac.2016.18.5.1053
  2. Experimental study and modelling of CFRP-confined damaged and undamaged square RC columns under cyclic loading vol.21, pp.2, 2016, https://doi.org/10.12989/scs.2016.21.2.411
  3. Research of RC columns strengthened by carbon FRP under loading vol.174, pp.2261-236X, 2018, https://doi.org/10.1051/matecconf/201817404017
  4. Effect of Bond-Slip on Dynamic Response of FRP-Confined RC Columns with Non-Linear Damping vol.11, pp.5, 2014, https://doi.org/10.3390/app11052124