Bilokurov P. Strength and deformability of composite steel beams, strengthened with external steel reinforcement

The object of the research is strength and deformability of composite steel beams, strengthened with external steel reinforcement. The subject of the research to development of computation method for determination of durability, inflexibility and strain of the bending reinforced concrete elements with mixed reinforcement. The research methods are the semitheoretical method with application of the system approach, mathematical modeling of construction elements, computer modeling of structural elements. The scientific novelty of the research is the complex of experimental investigations of work of concrete and composite steel constructions increased by gluing of external metal and non-metal reinforcement or impregnation by polymer materials were performed. After the got results computation preconditions are formulated and design relations for estimation of the stress-strain state and determination of bending reinforced concrete elements with mixed reinforcement.