DOI: 10.18503/1995-2732-2026-24-1-168-175
Abstract
Problem Statement (Relevance). The increasing use of concrete filled steel tube columns in our country makes it increasingly important to find the most effective structural solutions. Objectives. It is proposed to use round-section concrete filled steel tube columns made using pipes made of high-strength steel of at least C440 grade, high-strength concrete of B60 grade and higher, and high-strength reinforcing bars of A600C grade and higher as vertical heavily loaded structures. Additional indirect reinforcement also allows for a noticeable increase in the strength of the concrete core and, consequently, of the columns as a whole. For these purposes, it is advisable to use coils made of A500C or A600C grade reinforcement. Result. The calculation data are presented, indicating a significant reduction in the material content of a column made of high-strength materials compared with reinforced concrete and tube-reinforced concrete, which does not have reinforcement of the concrete core. Practical Relevance. A simplified calculation method for the improved design of a concrete filled steel tube column is proposed, which can be used in project practice. This method has been developed on the basis of a phenomenological approach and takes into account the main features of the force resistance of the columns. Unlike the well-known methods proposed by regulatory documents of various countries, it is applicable to all grades of concrete and reinforcement. In addition, it allows to calculate the strength of structures with spiral reinforcement. The method has already found practical use in the design of a high-rise building of the multifunctional complex “UMMC Business Center”, which began construction in the summer of 2024 in the center of the Yekaterinburg City business district. The technical and economic indicators of the project show the high efficiency of using tube-reinforced concrete made of high-strength materials as heavily loaded columns. A noticeable reduction in cross-sectional dimensions and content of basic materials has been obtained in the case of using concrete filled steel tube columns instead of reinforced concrete ones. The positive experience has demonstrated that the use of tube-reinforced concrete in high-rise construction is recommended for wide distribution.
Keywords
concrete filled steel tube column, axial compression, strength, deformability, high-strength concrete, high-strength reinforcing bar, spiral reinforcement
For citation
Krishan A.L., Astafieva M.A., Parfenov V.V., Vavilin N.V. Efficiency of Using Heavy Loaded Concrete Filled Steel Tube Columns. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2026, vol. 24, no. 1, pp. 168-175. https://doi.org/10.18503/1995-2732-2026-24-1-168-175
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