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"Finite element modeling of square high-strength concrete short columns" by Mohamed Emara, Mizan Ahmed et al.

Conventional steel bars in Reinforced Concrete (RC) square columns are utilized as longitudinal reinforcement and steel ties are utilized as transverse reinforcement for concrete confinement. The concrete confinement in RC columns with square section is less than that with circular section. Recently, Steel-Equal Angle (SEA) as longitudinal reinforcement has been investigated for square RC columns. The RC columns with SEA as longitudinal reinforcement exhibit higher strength and ductility than the RC columns with conventional steel bars as longitudinal reinforcement. However, experimental and computational investigations have been very limited on RC columns with SEA as longitudinal reinforcement. Existing studies investigated only the effects of lateral tie spacing on the performance of RC columns reinforced with SEA sections. However, the effects of the other important column parameters, such as the width and thickness of SEA sections, yield stress of SEA sections, and the concrete com ....

Reinforced Concrete , Steel Equal Angle , Finite Element Modeling , Nelastic Analysis , Steel Equal Angle , Teel Reinforced Concrete Columns ,

"Numerical simulation of axially loaded square high-strength concrete s" by Mizan Ahmed, M. Neaz Sheikh et al.

Steel Equal-Angle (SEA) can be used to replace the longitudinal reinforcement in concrete columns to improve their strength and ductility. However, as a novel concept of applying SEA as longitudinal reinforcement in concrete columns, experimental and numerical studies are very limited on the behavior of SEA Reinforced Concrete (SEARC) columns constructed with high-strength concrete. This paper presents a numerical simulation model based on the fiber-element method for computing the axial performance of square SEARC short columns loaded axially. The model accounts for the inelastic buckling of SEA sections and confinement effects provided by SEA to the confined concrete. Available test data is used to examine the accuracy of the numerical model. It is shown that there is a good agreement between numerical simulation and experimental data. The numerical model is employed to investigate the influences of important parameters on the responses of short SEARC columns subjected to axial compr ....

Fiber Element Modeling , Nelastic Behavior , Teel Equal Angles , Teel Reinforced Concrete Columns ,