THE ANALYTICAL STUDY OF STRENGTHENING THE HORIZONTALLY CURVED STEEL BEAM WITH CFRP LAMINATES

  • Hayder M.K. Al-Mutairee Department of Civil Engineering, University of Babylon, Iraq
  • Ali I. AbdulAbbas Department of Civil Engineering, University of Babylon, Iraq

Abstract

This research is devoted to study the non-linear three dimensional behavior of horizontally curved steel girder strengthened by CFRP laminates under static loads. A new computer program NFASAC (Nonlinear Finite Element Analysis of Steel-Adhesive-CFRP) has been written for this purpose utilizing previous programs. Verification of present model is done by compare the predicted load-deflection curves and shear stresses profile over the adhesive material with experimental data. The static parametric studies proved that the increment in the ultimate load due to strengthening in some cases reaches up to 39%, 54%, and 110% whenever the CFRP has thickness 1.4mm, 2mm, and 4mm respectively. While the increment in the load of elastic stage due to strengthen reaches up to 32%, 50% and 75% for thickness of CFRP 1.4mm, 2mm, and 4mm respectively. Also the laminate of CFRP can confine the horizontally curved steel beam from twisting. The reduction in angle of twist was 89% and reduction in lateral deformation was 90% is some cases. The results showed that length of CFRP equal to 67 percent of length of span was adequate to achieve maximum strengthening. On the other hand the relation between thickness of CFRP laminate and increasing in ultimate load was linear. A governing equation was derivative to predict the increment in ultimate load of horizontally steel curved beam strengthening the bottom flange by CFRP laminate.

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Published
2015-12-30
How to Cite
Al-Mutairee, H. M., & AbdulAbbas, A. I. (2015). THE ANALYTICAL STUDY OF STRENGTHENING THE HORIZONTALLY CURVED STEEL BEAM WITH CFRP LAMINATES. European Scientific Journal, ESJ, 11(36). https://doi.org/10.19044/esj.2015.v11n36p%p