THE INFLUENCE OF NEGATIVE ATMOSPHERIC TEMPERATURES ON THE STRESS STATE AND THE SIZE OF THE CROSS-SECTIONS OF COMPOSITE BEAMS MADE OF WOOD-AND-REINFORCED CONCRETE IN AUTO ROAD BRIDGES

The article presents the derivation and solution of the differential equation of the ultimate limit state of the wooden and reinforced concrete beam under the influence of negative atmospheric temperatures, as well as the results of studies of the effect of negative atmospheric tempera- tures on the stressed state and the size of the cross-sections of the composite beams made of wood and reinforced concrete, in auto road bridges obtained by the developed program of computer-aided design.

composite beam, atmospheric temperature, differential equation, the shear stress on the concrete-wood contact, the normal stresses in the concrete and wood