Experimental analysis of the structural behavior of different types of shear connectors in steel-concrete composite beams

Abstract

The present work aims to compare the structural behavior of steel-concrete composite-section beams for three types of shear connectors made of U hot rolled section and cold-formed sections of U and L. Experimental tests were performed with the three types of connectors associated with I section laminated steel beams and reinforced concrete slabs. For each type of connector, three push-out tests were performed, as well as six simple supported beam tests to evaluate the positive bending moment region. The results indicated that the direct shear behavior among the different types of connectors presents significant differences, however they do not significantly influence the average flexural strength of the composite beams. These, however, present considerable differences in deflections and deformations due to the stiffness differences of the connectors.

Behavior of Steel–Lightweight Self Compacting Concrete Composite Beams with Various Degrees of Shear Interaction

“…The improvement in the structural properties of such composite beams primarily depends on the type and efficiency of the shear connections between the steel beam and concrete slab, as well as the structural performance of the two components [1][2][3][4]. Although many researchers have investigated the structural behavior of steel-concrete composites considering the effect of different states of loading along with the effect of different material parameters and different shear interaction methods [5][6][7][8][9][10][11][12][13], the study of the behavior of composite beams made from new types of concrete, like self-compacting concrete, sometimes called green concrete, is still limited.…”