Experimental and Theoretical Analysis of Hollow Steel Columns Strengthening by CFRP

Keykha, Amir Hamzeh; Nekooei, Masoud; Rahgozar, Reza

doi:10.9744/ced.17.2.101-107

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…The mechanical properties of steel-FRP hybrid laminate are dependent on the mechanical properties of steel, fiber and epoxy resin, as well as the resin volume. 40 In accordance with Refs., 41,42 the position of neutral layer is one of the most important parameter to describe a hybrid laminate, and the distance of the neutral layer to the outer surface at the bare steel side (i.e., ynormaln illustrated in Figure 3) in this study can be calculated by equation (7).…”

Section: Analytical Modelingsupporting

confidence: 88%

“…The equivalent elastic modulus of steel-FRP hybrid laminate can be calculated by equation (39) according to Liu et al 49 By substituting equation (39) into equation (38), g can be re-expressed by equation (40).…”

Section: Reinforcing Effects Of Frp On the Initial Stiffness Of Steel...mentioning

confidence: 99%

“…According to equation (40), the improvement of the initail stiffness shows a linear increase with an increase of E FRP t FRP for a given steel material. Particularly, in the case of t FRP ¼0 and E FRP ¼ 0, i.e., without the reinforcement of FRP, the value of g equals to one.…”

Section: Reinforcing Effects Of Frp On the Initial Stiffness Of Steel...mentioning

confidence: 99%

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Analytical modeling for the axial compression performance of steel-fiber-reinforced polymer hybrid laminates

Lin

Min

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hybrid structures from metal and fiber-reinforced polymer (FRP) hybrid laminates offer an attractive solution to enhance strength and structural stiffness as well as to achieve lightweight effect. The behavior of steel-FRP hybrid laminates subject to axial compression is not well understood due to lack of experimental and analytical investigations. The axial compression performance of steel-FRP hybrid laminates was studied by using axial compression test in this study. Hybrid laminates from DP980-CFRP (carbon fiber-reinforced polymer) and DP980-AFRP (aramid fiber-reinforced polymer) were fabricated and studied. An analytical model was deduced to analyze the maximum axial compressive load of steel-FRP hybrid laminates. The results demonstrate that steel-FRP hybrid laminates exhibit significantly higher maximum compressive loads and initial stiffnesses in axial compression in comparison with the single steel sheet.

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Section: Analytical Modelingsupporting

confidence: 88%

Section: Reinforcing Effects Of Frp On the Initial Stiffness Of Steel...mentioning

confidence: 99%

See 1 more Smart Citation

Analytical modeling for the axial compression performance of steel-fiber-reinforced polymer hybrid laminates

Lin

Min

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Structural behaviors of strengthened deficient steel square hollow section columns under axial compressive loads

Shahraki

Darmiyan

2022

Innov. Infrastruct. Solut.

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

Keykha¹

2018

ced

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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.

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Experimental and Theoretical Analysis of Hollow Steel Columns Strengthening by CFRP

Cited by 3 publications

References 8 publications

Analytical modeling for the axial compression performance of steel-fiber-reinforced polymer hybrid laminates

Analytical modeling for the axial compression performance of steel-fiber-reinforced polymer hybrid laminates

Structural behaviors of strengthened deficient steel square hollow section columns under axial compressive loads

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

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