Analysis of a Steel-Concrete Composite Girder Made without the Use of Welding

Abstract

The work presents a solution for a steel-concrete ceiling girder made without the use of welding. Experimental and numerical tests carried out on a real-scale girder model were discussed, on the basis of which the value of the destructive load, the value of the destructive bending moment and the amount of girder deflection were determined. The results obtained from experimental tests were consistent with the results of numerical calculations. The bending load-bearing capacity was calculated for various variants of the girder structure, showing that it depends mainly on the height of the steel section and the type of steel from which it was made. The impact of the other analyzed parameters is less important. Eliminating the welding process during the construction of the girder allows for reducing the energy consumption of its production while maintaining strength parameters comparable to elements in which welding was used. Moreover, the connector attachment technique used (unlike welding) does not cause any microstructure transformations, allows maintaining the homogeneity of the material and avoiding internal stresses and deformations.