Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Strengthening of steel hollow pipe sections subjected to transverse loads using CFRP

  • Narmashiri, Kambiz (Department of Civil Engineering, College of Engineering, Zahedan Branch, Islamic Azad University) ;
  • Mehramiz, Ghadir (Department of Civil Engineering, College of Engineering, Zahedan Branch, Islamic Azad University)
  • Received : 2015.11.14
  • Accepted : 2016.07.19
  • Published : 2016.10.10
⟨ Previous Next ⟩

Abstract

Nowadays using Carbon Fiber Reinforced Polymer (CFRP) has been expanded in strengthening steel structures. Given that few studies have taken about strengthening of steel hollow pipe sections using CFRP, in present study, the effects of CFRP sheets using two layers as well as in combination with additional reinforcing strips has been assessment. Strengthening of five specimens was carried out in laboratory tests. As well as numerical simulation was performed for all specimens by Finite Element Method (FEM) using ABAQUS software and high correlation between the results of numerical models with experimental data indicate the power of FEM in this field. The results of both laboratory and simulated specimens showed that load-bearing capacity of circular cross-sections can be significantly increased using CFRP retrofitting technique. Also, application of additional CFRP reinforcing strips and layers caused more strength for the strengthened specimens.

Keywords

Acknowledgement

Supported by : Islamic Azad University

References

  1. Carolin, A. (2003), "Carbon fiber reinforced polymers for strengthening of structural elements", PhD Thesis, Lulea University of Technology.
  2. Duell, J.M., Wilson, J.M. and Kesseler, M.R. (2008), "Analysis of a carbon composite overwrap pipeline repair system", Int. J. Press. Ves. Pip., 85, 782-788. https://doi.org/10.1016/j.ijpvp.2008.08.001
  3. Edalati, S.A., Yadollahi, Y., Pakar, I. and Bayat, M. (2015), "On the effect of GFRP fibers on retrofitting steel shear walls with low yield stress", Earthq. Struct., 8(6), 1453-1461. https://doi.org/10.12989/eas.2015.8.6.1453
  4. Gablbraith, D.N. and Barnes, F. (1995) "Beryl bravo-blast walls conversion: development and testing of steel/carboon fiber composite", Proceeding of 5th International Offshore and Polar Engineering Conference, The Hague, Netherlands, June.
  5. Gangarao, H., Taly, N. and Vijay, P. (2007), Reinforced Concrete Design with FRP Composite, Taylor & Francis Group.
  6. Lenwari, A., Thepchatri, T. and Watanabe, E. (2002), "Prediction of premature separation of bonded CFRP plates from strengthened steel beams using a fracture criterion", Struct. Eng. Mech., 14(5), 565-574. https://doi.org/10.12989/sem.2002.14.5.565
  7. Mokhtari, M. and Alavi Nia, A. (2015), "The influence of using CFRP wraps on performance of buried steel pipelines under permanent ground deformations", Soil Dyn. Earthq. Eng., 73, 29-41. https://doi.org/10.1016/j.soildyn.2015.02.014
  8. Narmashiri, K. (2011), "Carbon fiber reinforced polymer strips for flexural and shear strengthening steel Ibeams", PhD Thesis, University of Malaya.
  9. Narmashiri, K., Jumaat, M.Z. and Ramli Sulong, N.H. (2010), "Shear strengthening of steel I-beams by using CFRP strips", Sci. Res. Essays, 5(16), 2155-2168.
  10. Park, J.W. and Choi, S.M. (2013), "Structural behavior of CFRP strengthened concrete-filled steel tubes columns under axial compression loads", Steel Compos. Struct., 14(5), 453-472. https://doi.org/10.12989/scs.2013.14.5.453
  11. Park, J.W. and Yoo, J.H. (2015), "Flexural and compression behavior for steel structures strengthened with Carbon Fiber Reinforced Polymers (CFRPs) sheet", Steel Compos. Struct., 19(2), 441-465. https://doi.org/10.12989/scs.2015.19.2.441
  12. Wang, L., Hou, W., Han, H. and Huo, J. (2015), "Repair of flange damage steel-concrete composite girders using CFRP sheets", Struct. Eng. Mech., 55(3), 511-523. https://doi.org/10.12989/sem.2015.55.3.511
  13. Zhao, X.L. and Al-Mahaidi, R. (2009), "Web buckling of light steel beams strengthened with CFRP subjected to end-bearing forces", Thin Wall. Struct., 47(10), 1029-1036. https://doi.org/10.1016/j.tws.2008.10.009
  14. Zhao, X.L., Fernando, D. and Al-Mahaidi, R. (2006), "CFRP strengthened RHS subjected to transverse end bearing force", Eng. Struct., 28(11), 1555-1565. https://doi.org/10.1016/j.engstruct.2006.02.008

Cited by

  1. Experimental and numerical investigation of strengthened deficient steel SHS columns under axial compressive loads vol.67, pp.2, 2016, https://doi.org/10.12989/sem.2018.67.2.207
  2. Finite element simulation for steel tubular members strengthened with FRP under compression vol.72, pp.5, 2019, https://doi.org/10.12989/sem.2019.72.5.569
  3. Compressive behavior of galvanized steel wire mesh (GSWM) strengthened RC short column of varying shapes vol.7, pp.3, 2020, https://doi.org/10.12989/smm.2020.7.3.215
  4. Shear strengthening of plate girders using carbon-fibre-reinforced polymer composites vol.174, pp.2, 2021, https://doi.org/10.1680/jcoma.16.00078
  5. Static strength of CFRP-strengthened tubular TT-joints containing initial local corrosion defect vol.236, pp.None, 2016, https://doi.org/10.1016/j.oceaneng.2021.109484