Klyuka E. The Calculation of Concrete Elements Normal Cutover Durability of Flexure with Twisting on the Basis of Nonlinear Deformation Model.

The object - linear reinforced concrete elements, working on bending with torsion purpose - improving the methods of evaluating stress-strain state and strength of reinforced concrete elements, working on bending with torsion, taking into account the nonlinearity of deformation of concrete and develop practical methods of calculation; methods - analytical review of the literature, experimental research, comparative analysis of theoretical and experimental data, development of calculation formulas, algorithms, flowcharts, and software for symbolic calculations using the computer, comparing theoretical and experimental data; novelty - proposed and implemented the idea of further improving the method of experimental strain diagrams full of concrete, which enables the following chart under steady deformation, first performed targeted experiments that helped to get a stable value different points of complete parametric diagrams strain of concrete, including on descending section of the chart, which will improve their mathematical model; further developed methods of determining the boundary deformation of compressed concrete cross section of reinforced concrete elements subject to bending with torsion; The improved deformation based on the method of calculating the strength of reinforced concrete elements for joint action of bending and torque, the introduction - in the draft regulations and the design of 3 at structures in the Poltava region.; the branch - building.