Bibik D. Deflected mode of precast and cast-in-situ steel-concrete composite beams considering physical nonlinearity

The object is precast and cast-in-situ steel-concrete composite beams; the purpose - is definition of deflected mode and strength of precast and cast-in-situ steel-concrete composite beams considering phases of production, physical and geometrical nonlinearities; the novelty - the procedure of evaluating of deflected mode of section and strength and deformability analysis of steel-concrete composite beams considering physical nonlinearity and staging of making was improved, the analysis of sections deflected mode for precast and cast-in-situ steel-concrete composite beams with different geometric and strength parameters got further development, the new results of experimental-theoretical research of steel-concrete composite beams with large ratio of reinforcement had the further development; the results - the dependencies were determined for beams cross sections deflected mode with various grades of concrete and various geometric sizes of section, the practical recommendations were developed for selecting the optimum geometric dimensions and reinforcement of steel-concrete composite beams for different spans and loads; the field is construction.