Abstract
This paper presents an analytical investigation of the local buckling of steel I-sections strengthened with bonded Fiber Reinforced Polymer (FRP) plates to improve their local buckling capacity. An analytical stability model is presented that considers the section as being composed of a group of plates that are linked together. The non-strengthened parts of the section were modeled as isotropic plates while each of the strengthened ones was dealt with as a sandwich composite plate that was modeled as an orthotropic material. A parametric study is presented to investigate the effect of each of the parameters of the problem including the strengthening scheme, the section geometry, and the properties of the strengthening material.
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