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This study describes experimental and numerical investigations into the inelastic performance of hybrid structural configurations consisting of reinforced concrete (RC) beams connected to steel columns by means of fully-embedded structural steel profiles (shear-keys). Experimental observations from a series of fourteen full-scale hybrid steel/RC specimens are presented. To provide further insights into the key response characteristics, detailed numerical analyses for the tested configurations are also carried out. The numerical studies are undertaken using nonlinear finite element procedures which are validated against the experimental results from the hybrid tests presented in this paper. The ability of the numerical models to provide faithful predictions, using a consistent set of material parameters, provides a high level of confidence in the reliability of the simulation techniques. Data from the numerical models are then sutilised to evaluate the shear-force distribution along the length of the shear-key. The contribution from the shear-key to the overall vertical force transferred to the column is comparatively assessed amongst the various configurations presented. For more simplified design considerations, an idealised distribution of the effective shear forces along the shear-key is also proposed in the current study. Bases on the findings, recommendations for the practical design of shear-keys in hybrid specimens are suggested and discussed.

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