Abstract
In order to study the mechanical properties of shear connectors for a composite beam under complex stress conditions, two 1:2 reduced-scale model tests with different types of shear connectors are conducted. These models are designed base on a real composite beam bridge in Guangzhou. Comparative analysis about the relative slipping on the steel-concrete interface of the rigid shear connector model and flexible shear connector model under the same boundary conditions is studied in detail. Responses of two types of shear connectors under three different load cases are also compared. The model test results show that the ultimate bearing capacity of concrete is the key factor of relative slipping on the steel–concrete interface and differences between rigid and flexible shear connectors are large. It is useful as references for future research and designs of shear connectors in composite beams.
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