Improved approach for composite steel-concrete slab continuous beams: Analysis of interfacial sliding stresses - Tahar, Hassaine Daouadji; Abbes, Boussad; Bensatallah, Tayeb; Abbes, Fazilay (Computers and Concrete, 2026)
This paper investigates the interfacial slip stresses in continuous steel-concrete composite beams reinforced with externally bonded composite plates. The study employs mathematical formulations to capture the nonlinear behavior of continuous composite beams, accounting for both equilibrium and deformation compatibility throughout all components of the reinforced structure. An analytical nonlinear modeling approach is developed alongside a finite element model to analyze interfacial slip in continuous composite beams. The results demonstrate that adhesive bonding between the concrete slab and steel beam can significantly reduce cracking in the negative moment regions of continuous beams. The theoretical and numerical predictions are validated through comparison with existing experimental and analytical results, enhancing the understanding of the mechanical behavior of continuous composite beams and informing the design of hybrid steel-concrete structures.
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