Davydenko O. Stress-strain state and bearing capability of reinforced concrete elements of circular cross-section under the action of shear forces.

The dissertation is devoted to experimental and theoretical study of the stress-strain state and bearing capability of reinforced concrete elements of circular cross section under the action of shear forces. The obtained regularities of deformation and destruction of reinforced concrete elements of circular cross-section in the transverse and longitudinal-transverse bending at different spans of the slice. Experimentally established the influence of longitudinal compressive force and eccentricity on the bearing capability of reinforced concrete columns of circular cross section under the action of transverse forces and moments. Kinetics of the formation and development of inclined cracks at transverse bending is set on the basis of a new contactless method of digital image correlation. Deformation method of calculation of oblique sections of reinforced concrete elements of circular cross-section with transverse and longitudinal-transverse bending is developed using real diagrams of deformation of concrete and reinforcement. oblique cross sections. Keywords: concrete, circular section, stress-strain condition, the shear force, the deformation method.