Changes in the code of rules for the design of structures made of concrete with polymer composite reinforcement

Abstract

The article presents information about the changes made to the code of rules for the design of concrete structures reinforced with polymer composite reinforcement. New rules for the formation of relative deformations at the base point of a two-line diagram of concrete under axial tension, used to calculate reinforced concrete elements for the second group of limit states, are described. The rules for calculating re-reinforced structures of T-or I-beam cross-sections with a shelf in a compressed zone by the method of limiting forces are presented. The rules for taking into account the inelastic properties of concrete of the stretched zone when determining the elastic-plastic moment of resistance for the extreme stretched fibre of concrete with a rectangular cross-section and a T-shape with a shelf located in the compressed zone are clarified.