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Structural Engineering and Mechanics
  Volume 60, Number 1, October10 2016 , pages 163-173

Strengthening of steel hollow pipe sections subjected to transverse loads using CFRP
Kambiz Narmashiri and Ghadir Mehramiz

    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.
Key Words
    retrofitting; steel hollow pipe section; transverse load; CFRP
Kambiz Narmashiri and Ghadir Mehramiz: Department of Civil Engineering, College of Engineering, Zahedan Branch, Islamic Azad University, Zahedan, Iran

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