A Numerical Investigation on the Structural Behavior of Deficient Steel Frames Strengthened using CFRP Composite

Authors

  • Amir Hamzah Keykha

DOI:

https://doi.org/10.9744/ced.20.1.1-7

Keywords:

CFRP strengthening, deficient steel frames, numerical study, ultimate load capacity.

Abstract

Carbon fiber reinforced polymers (CFRP) is one of the materials that is used to strengthen steel structures. Most studies on CFRP strengthening steel on structures have been done on beams and steel columns. No independent study has studied the effect of CFRP strengthening on the structural behavior of steel frames having initial deficiency.The deficiency in steel structures may be created due to the errors caused by construction and others.This study aims to carry out a numerical study on the efficiency of CFRP sheet on strengthening square hollow section (SHS) steel frames having initial deficiency. Seven specimens, five of which were strengthened using CFRP sheets, were analyzed. ANSYS software was used to analyze the SHS steel frames. The results showed that the coverage length, the width, and the number of CFRP layers have a significant effect on increasing and recovering the ultimate load capacity of the SHS steel frames having initial deficiency.

References

Teng, J.G. and Hu, Y.M., Behaviour of FRP-Jacketed Circular Steel Tubes and Cylindrical Shells under Axial Compression, Construction and Building Materials, 21(4), 2007, pp. 827-838.

Bambach, M.R., Jama, H.H., and Elchalakani, M., Axial Capacity and Design of Thin-Walled Steel SHS Strengthened with CFRP, Thin-Walled Structures, 47(10), 2009, pp. 1112-1121.

Haedir, J. and Zhao, X.L., Design of Short CFRP-Reinforced Steel Tubular Columns, Journal of Constructional Steel Research, 67(3), 2011, pp. 497-509.

Fanggi, B.A.L. and Ozbakkaloglu, T., Square FRP–HSC–Steel Composite Columns: Behavior under Axial Compression, Engineering Structures, 92, 2015, pp. 156-171.

Ozbakkaloglu, T. and Xie, T., Behavior of Steel Fiber-Reinforced High-Strength Concrete-Filled FRP Tube Columns under Axial Compression, Engineering Structures, 90, 2015, pp. 158-171.

Kim, Y.J. and Harries, K.A., Behavior of Tee-Section Bracing Members Retrofitted with CFRP Strips Subjected to Axial Compression, Composites Part B: Engineering, 42(4), 2011, pp. 789-800.

Keykha, A.H., Nekooei, M., and Rahgozar, R., Experimental and Theoretical Analysis of Hollow Steel Columns Strengthening by CFRP, Civil Engineering Dimension, 17)2(, 2015, pp. 101-107.

Keykha, A.H., Nekooei, M., and Rahgozar, R., Analysis and Strengthening of SHS Steel Columns using CFRP Composite Materials, Composites: Mechanics, Computations, Applications. An International Journal, 7(4), 2016, pp. 275–290.

Deng, J., Lee, M.M., and Moy, S.S., Stress Analysis of Steel Beams Reinforced with A Bonded CFRP Plate, Composite Structures, 65(2), 2004, pp. 205-215.

Youssef, M.A., Analytical Prediction of the Linear and Nonlinear Behaviour of Steel Beams Rehabilitated using FRP Sheets, Engineering Structures, 28(6), 2006, pp. 903-911.

Islam, S.Z. and Young, B., Strengthening of Ferritic Stainless Steel Tubular Structural Members using FRP Subjected to Two-Flange-Loading, Thin-Walled Structures, 62, 2013, pp. 179-190.

Al-Zubaidy, H., Al-Mahaidi, R., and Zhao, X.L., Finite Element Modeling of CFRP/Steel Double Strap Joints Subjected to Dynamic Tensile Loadings, Composite Structures, 99, 2013, pp. 48-61.

Chahkand, N.A., Jumaat, M.Z., Sulong, N.R., Zhao, X.L., and Mohammadizadeh, M.R., Experimental and Theoretical Investigation on Torsional Behaviour of CFRP Strengthened Square Hollow Steel Section, Thin-Walled Structures, 68, 2013, pp. 135-140.

Photiou, N.K., Hollaway, L.C., and Chryssanthopoulos, M.K., Strengthening of an Artificially Degraded Steel Beam utilizing a Carbon/Glass Composite System, Construction and Building materials, 20(1), 2006, pp. 11-21.

Sundarraja, M.C. and Prabhu, G.G., Finite Element Modeling of CFRP Jacketed CFST Members under Flexural Loading, Thin-Walled Structures, 49(12), 2011, pp. 1483-1491.

Al Zand, A.W., Badaruzzaman, W.H., Mutalib, A.A., and Qahtan, A.H., Finite Element Analysis of Square CFST Beam Strengthened by CFRP Composite Material, Thin-Walled Structures, 96, 2015, pp. 348-58.

Keykha, A.H., Nekooei, M., and Rahgozar, R., Numerical and Experimental Investigation of Hollow Steel Columns Strengthened with Carbon Fiber Reinforced Polymer, Journal of Structural and Construction Engineering, 3(1), 2016, pp. 49-58.

Keykha, A.H., CFRP Strengthening of Steel Columns Subjected to Eccentric Compression Loading, Steel and Composite Structures, 23(1), 2017, pp. 87-94.

Keykha, A.H., Effect of CFRP Location on Flexural and Axial Behavior of SHS Steel Columns Strengthened using CFRP, Journal of Structural and Construction Engineering, 4(2), 2017, pp. 33-46.

Keykha, A.H., Numerical Investigation of SHS Steel Beam-Columns Strengthened using CFRP Composite, Steel and Composite Structures, 25 (5), 2017, pp. 593-601.

Keykha, A.H., Structural Behaviors of Deficient Steel Members Strengthened Using CFRP Composite Subjected to Torsional Loading, 3rd International Conference on Mechanics of Composites Conference Proceedings, Bologna, Italy, 2017.

Keykha, A.H., Finite Element Investigation on the Structural Behavior of Deficient Steel Beam-Columns Strengthened using CFRP Composite, 3rd International Conference on Mechanics of Composites Conference Proceedings, Bologna, Italy, 2017.

Keykha, A.H., 3D Finite Element Analysis of Deficient Hollow Steel Beams Strengthened using CFRP Composite under Torsional Load, Composites: Mechanics, Computations, Applications, An International Journal, 8(4), 2017, pp. 287-297.

Downloads

Published

2018-04-07

How to Cite

Keykha, A. H. (2018). A Numerical Investigation on the Structural Behavior of Deficient Steel Frames Strengthened using CFRP Composite. Civil Engineering Dimension, 20(1), 1–7. https://doi.org/10.9744/ced.20.1.1-7

Issue

Vol. 20 No. 1 (2018): MARCH 2018

Section

Articles

License

Authors who publish with this journal agree to the following terms:
  1. Authors retain the copyright and publishing right, and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) followingthe publication of the article, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).