Experimental investigation of steel-concrete composite push-out tests with embedded corrugated web

Abstract

The application of steel trapezoidal corrugated web in steel-concrete composite girders has been widespread in building structures and has also appeared in bridges for a few decades, due to their advantageous mechanical properties. Embedding the trapezoidal web in the concrete slab leads to additional advantages such as omitting the welds of the top flange, a greater extent of the accordion effect and extra resistance in the load transfer between the two materials. Despite these advantages and their increasing use, there are not many experimental studies to analyse the behaviour of the embedded trapezoidal web and its involvement in shear connection resistance. In order to expand the experimental studies, laboratory tests are executed between 2017–18 at the Department of Structural Engineering of the Budapest University of Technology and Economics on large-scale test specimens, with a total number of 43 embedded specimens. The current paper introduces the executed test program, the analysed specimens, their specialties regarding the geometrical layout and the obtained results. The paper gives a quantitative comparison of the 43 specimens and evaluates the analysed shear connectors regarding their static performance.