Efficiency comparison of material usage in various approaches to design the columns made of reinforced concrete

Abstract

This article touches on the topic of calculating pipe-concrete columns with a different approach when selecting a section of a suitable diameter. In the first case, the column was calculated under the influence of loads at the minimum permissible cross-section of the reinforcement, in the second case, the calculation was made with identical loads, but with an increased cross-section of the reinforcement rods, in both cases, the section of the steel pipe of the column was selected, considering compliance with all critical conditions and strength checks. According to the results of the study, we can say that the rational method of calculation, in terms of material consumption, is the first option with the minimum allowable cross-section of reinforcement, on average, the amount of metal spent on such a column will be 14.4% less than in the second option, but the required volume of concrete in this case will increase by 10.4%. Based on the results obtained, we can say that the first approach to calculation is more efficient in terms of metal costs, which is the prevailing factor in the design of steel-reinforced concrete structures.