Analysis behavior of composite cellular steel-concrete beams reinforced by composite plate - Tayeb, Bensatallah; Tahar, Hassaine Daouadji; Boussad, Abbes; Aberezak, Rabahi; Rabia, Benferhat; Fazilay, Abbes (Earthquakes and Structures, 2026)
This study investigates the interfacial stresses in composite steel-concrete cellular beams reinforced by composite plates, focusing on their nonlinear behavior. The study examines the impact of adhesive nature and irregular thickness of the adhesive joint on the mechanical performance of the holed beams, examining key parameters such as stiffness, bearing capacity, and stress distribution. Nonlinear elastic theory is used to analyze sliding and linear interfacial stresses in these beams, considering bonded shear deformations and linear shear stress throughout the beam's depth. The study is intended for applications with holed beams made of various materials joined by a thin composite plate. The stresses at the interface are influenced by the material and geometry parameters of the composite beam. The study recommends structural design that balances the size and number of web holes and load-bearing capacity, and recommends using reinforcements around web openings for stability. This research is useful for understanding the mechanical behavior of the interface and designing hybrid structures.
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