Resistance of Concrete Slender Columns

Fillo, Ĺudovít; Čuhák, Marek; Minárová, Mária

doi:10.1016/j.proeng.2017.06.033

Cited by 1 publication

(2 citation statements)

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“…From equation ( 6), it can be clearly understood that σ t (0) � f tm and σ t (w c ) � 0. erefore, w c can be considered as the fracture crack opening and given as [9] w c � 5.14G F f tm . (7) In this proposed method, the actual crack spacing was not studied, but single crack per element has been assumed. According to Alfarah et al, the assumption was suitable for global-purpose simulation.…”

Section: Tensile Strength Behaviormentioning

confidence: 99%

“…A recent research indicates that an approximate method for calculating the secondorder moment is not always results the safe side of the design. Relatively, a discrete model which take account the x-sectional nonlinearity, nonlinear behavior of concrete in compression, influence of cracking, and tension stiffening provides fair results [7].…”

Section: Introductionmentioning

confidence: 99%

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Construction of Uniaxial Interaction Diagram for Slender Reinforced Concrete Column Based on Nonlinear Finite Element Analysis

Ahmed

Zerfu

Agon

2021

Advances in Civil Engineering

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Slender reinforced concrete column may fail in material failure or instability failure. Instability failure is a common problem which cannot be analyzed with first-order analysis. So, second-order analysis is required to analyze instability failure of slender RC column. The main objective of this study was to construct uniaxial interaction diagram for slender reinforced concrete column based on nonlinear finite element analysis (FEA) software. The key parameters which were studied in this study were eccentricity, slenderness ratio, steel ratio, and shape of the column. Concrete damage plasticity (CDP) was utilized in modeling the concrete. Material nonlinearity, geometric nonlinearity, effect of cracking, and tension stiffening effect were included in the modeling. The results reveal that, as slenderness ratio increases, the balanced moment also increases, but the corresponding axial load was decreased. However, increasing the amount of steel reinforcement to the column increases the stability of the column and reduces the effect of slenderness ratio. Also, the capacity of square slender RC column is larger than rectangular slender RC column with equivalent cross section. However, the result is close to each other as slenderness ratio increased. Finally, validation was conducted by taking a benchmark experiment, and it shows that FEA result agrees with the experimental by 85.581%.

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Section: Tensile Strength Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%