Karabash L. Strength of Rectangular Reinforced Concrete Keys with the Account of Reinforcement and Compression Features

Object - rectangular keyed joints of concrete and reinforced concrete elements; the purpose - improvement of methods of calculation of the strength of keyed joints of concrete and reinforced concrete elements; the methods - are mechanics of solid body, variable method of theory plasticity of concrete, experimental, mathematical statistics; the novelty - the first time on the basis of variational methods of the theory of plasticity of concrete solve the problem of estimate of ultimate load of keys is solved by means of variable method of plasticity theory of concrete taking into account reinforcing features (reinforcement quantity and placement, dowel effect), obtained new experimental data on the deformation, failure mode and ultimate load some concrete (reinforced concrete) keys, the improved methods of calculation of the strength of rectangular reinforced concrete keys are propounded in this thesis, the methods are based on consideration of the character of state of stress of the fracture area and taking into account of the determining factors of strength. , the results - the influence of features of reinforcement (reinforcement quantity and placement, dowel effect), the degree of compression on the strength keys and improved methodology for calculating the strength of concrete and keys concrete, implemented in the design specifications for concrete structures prefabricated monolithic frame, the branch of application is construction.