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Comparative analysis of the influence of concrete class on the bearing capacity of reinforced concrete columns of small flexibility with mixed reinforcement

Abstract

Comparative analysis of the influence of concrete class on the bearing capacity of reinforced concrete columns of small flexibility with mixed reinforcement

Umarov A.G., Umarov R.G., Blyagoz A.M.

Incoming article date: 23.05.2020

The effective use of high-strength reinforcement in reinforced concrete structures is an important task today. In order to reduce the consumption of materials, especially steel, it is necessary to use high-strength materials more widely in the production of reinforced concrete structures. In recent years, researchers have significantly increased interest in reinforced concrete structures with mixed reinforcement. To determine the effect of the concrete class on the bearing capacity of reinforced concrete columns, a numerical experiment was performed. According to the results of the experiment, it was found that the maximum increase in bearing capacity with all variants of relative eccentricity is observed in racks with previously stretched and non-tensile reinforcement. Thus, the studies showed that the use of columns with mixed reinforcement is advisable. The use of mixed reinforcement in reinforced concrete racks in all cases is more effective than racks with non-tensile reinforcement.

Keywords: concrete, reinforcement, reinforced concrete, prestressing, the relative eccentricity, mixed reinforcement, column, bearing capacity