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2026

Axial load and strain prediction of square FRP–concrete–steel double-skin tubular columns using machine learning and nonlinear finite element analysis

Feature importance analysis revealed that axial load (Pu) is primarily governed by FRP stiffness, steel yield strength, and concrete strength, whereas ultimate axial strain (εcu) is dominated by steel tube geometry and strength, confirming that axial load and strain are controlled by distinct governing mechanisms.

P. Kumar, S. B. Singh, S. Barai · 0 citations
Open access Sep 2026

Finite Element Modeling and Experimental Verification of CFRP-Confined CFST Columns Under Compression

This study develops and evaluates a three-dimensional nonlinear finite element (FE) framework for carbon fiber-reinforced polymer (CFRP)-confined concrete-filled steel tube (CFST) short columns subjected to concentric axial compression. The concrete core is represented using C3D8R solid elements, and the steel tube and...

Bzhar Muheddin Mohammed, Esra Mete Güneyisi · 0 citations
Open access Oct 2026

Experimental and Theoretical Analysis Using FEA of Fiber-Reinforced Concrete Beam Flexural Performance

An experimental and theoretical program was conducted to enhance comprehension with regard to how variations in fibre ratio affect the structural performance of concrete beams. In this research a concrete mix with Three fibre volume fractions of 0.5%, 1.0%, and 1.5%were tested to evaluate the fibre effect on concrete s...

D. Witwit, Maytham Khalid Gatea, Hka al-Farttoosi et al. · 0 citations
Open access Sep 2026

Repeated Loading Behavior of CFRP-Strengthened Continuous RC Beams: Experimental Investigation, Finite Element Analysis, and Predictive Modeling

This study investigates the repeated-loading performance and moment redistribution of continuous reinforced concrete (RC) T-beams strengthened with carbon fiber-reinforced polymer (CFRP) using a combined experimental and numerical approach. The experimental part studies the effect of reinforcement percentage and the CF...

Zeinab Moubarek, Ehab Lotfy, M. Ahmed et al. · 0 citations
Open access Aug 2026

Axial compression behavior of FRP reinforced concrete columns based on database analysis and finite element validation

This study presents a comprehensive analytical evaluation of the axial compression behavior of fiber-reinforced polymer–reinforced concrete (FRP-RC) columns. The investigation focuses on the combined effects of transverse confinement, FRP material type, column geometry, and concrete compressive strength, while explicit...

Mohammad Awad · 0 citations
Open access Sep 2026

Probabilistic Analysis of the Failure Time of Concrete-Filled Steel Tube (CFST) Columns under Post-Blast Fire Loading

This study examines the behavior and resistance of concrete-filled steel tube (CFST) columns under post-blast fire conditions, where prior explosions cause initial structural damage affecting fire performance. A blast equivalent to 20 kg TNT at a 1.5 m distance was simulated, followed by fire exposure. Seven numerical...

Alireza Afaghi-Darabi, M. Moradi, Sadegh Rezaei · 0 citations

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