To the calculation of concrete structures with polymer composite reinforcement

Abstract

The issues of calculation of concrete structures reinforced with polymer composite reinforcement are considered. The paper presents proposals for the normalization of relative deformations at the base point of a two-line diagram of concrete under axial tension, used for calculating reinforced concrete elements for the second group of limit States. Recommendations on a coefficient that takes into account the inelastic properties of concrete of the stretched section zone of elements when calculating the moment of crack formation are given. The paper presents proposals for calculating perforated structures of t-shaped or I-shaped cross-sections with a shelf in the narrow zone and for selecting the working armature of such structures.