Influence of Geometric Imperfections on Buckling Resistance of Reinforcing Bars during Inelastic Deformation

Korentz, Jacek

doi:10.3390/ma13163473

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…First, there is crushing and spalling of the concrete cover, followed by buckling in the longitudinal bars and crushing in the concrete in the core of the section, accompanied by large deformations. It should be mentioned that buckling in the reinforcement bars in the columns can be accelerated by geometrical imperfections of these bars caused by transverse deformations of the concrete [30].…”

Section: Performance Of Columns Reinforced With Frp Barsmentioning

confidence: 99%

Prediction of Ultimate Capacity of Concrete Columns Reinforced with FRP Bars

Korentz

Czarnecki

2023

Polymers

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FRP bars are used in concrete structures as an alternative to steel bars as they have many advantages such as high tensile strength, high strength-to-weight ratio, electromagnetic neutrality, lightweight and no corrosion. There is a perceived lack of standard regulations for the design of concrete columns with FRP reinforcement, e.g., in Eurocode 2. This paper describes a procedure for predicting the bearing capacity of concrete columns with FRP reinforcement based on the interaction of axial force and bending moment, which was developed on the basis of existing design recommendations and standards. It was shown that the bearing capacity of eccentrically loaded RC sections depends on two parameters, which are the mechanical reinforcement ratio ω and the location of the reinforcement in the cross-section expressed by the β factor. The analyses carried out showed the existence of a singularity in the n–m interaction curve indicating the fact that in a certain loaded range, the curve is concave, and more it was shown that the balance failure point for sections with FRP reinforcement takes place for eccentric tension. A simple procedure for calculating the required reinforcement from any FRP bars in concrete columns was also proposed. Nomograms developed from n–m interaction curves provide for the accurate and rational design of FRP reinforcement in columns.

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Section: Performance Of Columns Reinforced With Frp Barsmentioning

confidence: 99%

Prediction of Ultimate Capacity of Concrete Columns Reinforced with FRP Bars

Korentz

Czarnecki

2023

Polymers

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“…Korentz, in the paper [22], analysed the aspects of the behaviour of compressed elements. The author presented the results of FEM simulation on three main factors and their influence on the buckling resistance of rebars and on their behaviour in the range of post-critical deformations.…”

Section: Reinforced Concrete Structuresmentioning

confidence: 99%

“…Also, the advanced FEM models could be used in future analyses. The original methods of validation were used to develop reliable and advanced models of reinforced concrete [1], slab and column systems [8], columns [22], and strengthening [19]. The FEM analyses were also used to model the thermomechanical process in ageing mass reinforced concrete constructions [6,18].…”

Section: Reinforced Concrete Structuresmentioning

confidence: 99%