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© Published under licence by IOP Publishing Ltd. Composite reinforcement is a good alternative to metal, for its high tensile strength, but its scope is limited due to its low deformation modulus and adhesion to concrete. The aim of the work is to propose a numerical model of the interaction of composite reinforcement with concrete in order to be able to simulate the operation of plastic-concrete (polymer-composite) structures of transport structures. During the study, the authors conducted a series of experiments to assess the strength of adhesion to concrete, the results of which were used to construct the "pulling force - reinforcement slippage relative to concrete" relationship. To approximate this relationship, a linear piecewise function was proposed, which was later used to implement a numerical model based on linear constraints with finite rigidity.

© 2019 IOP Publishing Ltd. As part of the work, experimental and numerical studies were carried out to assess the stress-strain state of concrete structures reinforced with polymer composite reinforcement. The experiment and numerical simulation obtained good consistency of the results. The research results showed that the pre-tension of links made of polymer composite reduces the deformability of the beams, by reducing the deflections by more than 4 times. Concrete structures, reinforced with pre-stressed strands of polymer composite, can be used in building structures for industrial and civil purposes, transport construction.