Abstract
The paper deals with optimisation of transversal disposition of steel and concrete composite road bridges in terms of the number of steel beams. For this purpose, a parametric study was performed, in which a total of 32 superstructures of steel and concrete composite road bridges, with different number of steel beams, different road widths and theoretical spans, were modelled and assessed. The reliability verification of the superstructure has been done according to Eurocodes. A result of parametric study is a comparison of advantages of the double-beam and the four-beam variants in terms of material consumption when considering different transverse dimensions and spans of the bridge. The individual variants are compared on the basis of the consumption of structural steel, concrete and reinforcing steel bars.
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