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Structural Engineering and Mechanics
  Volume 66, Number 4, May25 2018, pages 439-444
DOI: http://dx.doi.org/10.12989/sem.2018.66.4.439
 


Numerical investigation of continuous hollow steel beam strengthened using CFRP
Amir Hamzeh Keykha

 
Abstract
    This paper presents a numerical study on the behavior of continuous hollow steel beam strengthened using carbon fiber reinforced polymers (CFRP). Most previous studies on the CFRP strengthening of steel beams have been carried out on the steel beams with simple boundary conditions. No independent study, to the researcher\'s knowledge, has studied on the CFRP strengthening of square hollow section (SHS) continuous steel beam. However, this study explored the effect of the use of adhesively bonded CFRP flexible sheets on the behavior of the continuous SHS steel beams. Finite Element Method (FEM) has been employed for modeling. Eleven specimens, ten of which were strengthened using CFRP sheets, were analyzed under different coverage length, the number of layers, and the location of CFRP composite. ANSYS software was used to analyze the SHS steel beams. The results showed that the coverage length, the number of layers, and the location of CFRP composite are effective in increasing the ultimate load capacity of the continuous SHS steel beams. Application of CFRP composite also caused the ductility increase some strengthened specimens.
 
Key Words
    hollow continuous steel beam; CFRP strengthening; ultimate capacity; numerical investigation
 
Address
Amir Hamzeh Keykha: Department of Civil Engineering, Zahedan Branch, Islamic Azad University, Zahedan, Iran
 

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