The influence of standard tolerances of reinforcing bars on the technical and economic indicators of reinforced concrete elements
Abstract
The influence of standard tolerances of reinforcing bars on the technical and economic indicators of reinforced concrete elements
Incoming article date: 27.02.2021A theoretical study of the influence of geometric tolerances of reinforcement on the correspondence between delivery by weight and total length in meters of wire or rods is presented. The issues of efficiency and strength of bent reinforced concrete elements are considered, taking into account the influence of geometric deviations from the nominal values established by the norms for reinforcement of various classes. The documents of the regulatory framework regulating the design and construction and construction activities in the Russian Federation, as well as the works of domestic and foreign scientists, corresponding to the research in this area, were used. Used research methods such as structural and analytical analysis. The types of supplies of reinforcing steels, regulated by the current legislative framework and widely used in the practice of design and construction, are analyzed. Specific proposals have been developed for determining the need for reinforcement in weight and linear measurements, as well as for calculating the strength of reinforced concrete elements. It was revealed that the normalized deviation of the cross-sectional area significantly affects the length of the bar in unit of weight. Boundary values for the length of the rods have been determined for various diameters and classes of reinforcement.
Keywords: reinforcement, reinforcing bars, diameter, tolerance, reinforced concrete, reinforcement delivery, strength, cross-section, technical and economic indicators