LAUSR

Abstract The paper presents solution for a steel-concrete composite beam structure. The connectors were executed from sections of a non-weldable top-hat profile 80 × 85 × 3 made of S235 steel. The connectors were fastened to the beam with four shot nails. In the first part of the work the push-out tests of connectors were carried out. The tests allowed to optimize the length of the connector. The connectors with a length of 60 and 100 mm were considered. The results were verified in a numerical analysis. In the second part of the work, for the best variant of the connector, two models of the composite ceiling beam were made: a numerical one and in real scale. The ceiling model was constructed from an IPE I-beam, galvanized trapezoidal sheet, concrete, reinforcing mesh and top-hat connectors. The values of normal stresses and displacements were determined based on the numerical analysis. These results were compared with the displacements obtained in experimental test. The numerical analysis was carried out using the ADINA System program based on the Finite Element Method. The stresses and displacements in the steel and concrete parts as well as cracking in concrete were assessed.