Urban construction and architectureUrban construction and architecture2542-01512782-2109Eco-vector12567310.17673/Vestnik.2022.04.02Research ArticleSearch for the optimal section area annular section ecentrally compressed elements of reinforcementMordovskySergey S.<p>PhD in Engineering Science, Associate Professor of the Reinforced Concrete Structures Chair, Academy of Civil Engineering and Architecture</p>qaer1@yandex.ruFrantsevaDaria O.<p>Master’s Degree Student of the Faculty of Industrial and Civil Engineering, Academy of Civil Engineering and Architecture</p>qaer1@yandex.ruSamara State Technical University2001202312411141901202319012023Copyright © 2023, Mordovsky S.S., Frantseva D.O.2023<p>This article deals with the search for the optimal cross-sectional area of reinforcement of eccentrically compressed reinforced concrete elements of an annular section using the Mathcad software package. The determination of the optimal cross-sectional area of the reinforcement is carried out using the implementation of algorithms for finding the minimum that meets the requirements of the strength and stability of reinforced concrete elements. An analysis of the obtained data is given by comparison with the problem solved in the Handbook to SP 63.13330. The developed programs make it possible to save the designers time when choosing the reinforcement section and checking the strength and stability of reinforced concrete elements.</p>annular columneccentrically compressed elementreinforced concrete columnreinforcement cross-sectional areastrengthколонна кольцевого сечениявнецентренно сжатый элементжелезобетонная колоннаплощадь сечения арматурыпрочность[Ilyin N.A., Mordovsky S. S., Vasilyeva E. E., Talanova V. N. Determination of the area of reinforcement of reinforced concrete columns of circular cross section. Gradostroitel'stvo i arhitektura [Urban Construction and Architecture], 2018, vol.8, no.3, p.8-11. (in Russian) DOI: 10.17673/Vestnik.2018.03.2][Mordovsky S. S., SHarafutdinov K. B. Grafiki nesushchej sposobnosti vnecentrenno szhatyh elementov kol'cevogo secheniya [Graphs of the bearing capacity of eccentrically compressed elements of the annular section]. Certificate RF on the state registration of the computer program, 2019, art. no. 2019663245,][Murashkin G.V., Murashkin V.G. Modeling of concrete deformation diagram and scheme of stress-strain state. Izvestiya vysshih uchebnyh zavedenij. Stroitel'stvo [Izvestiya of Higher Educational Institutions. Construction], 1997, no.10, pp. 4–6. (in Russian)][Murashkin G.V., Mordovsky S.S. Application of the deformation diagram for calculating the increased activity of eccentrically compressed reinforced concrete elements. Zhilishchnoe stroitel'stvo [Housing Construction], 2013, no.3, pp. 38-40. (in Russian)][Karpenko N.I., Sokolov B.S., Radaikin O.V. Analysis and improvement of curvilinear diagrams of concrete deformation for the calculation of reinforced concrete structures according to the deformation model. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2013, no.1, pp. 25-27. (in Russian)][Mordovsky S.S. Sovershenstvovanie raschyota prochnosti vnecentrenno szhatyh zhelezobetonnyh elementov. Kand, Diss. [Improving the calculation of the strength of extra-centered compressed reinforced concrete elements. Ph.Doct, Diss]. Kazan, 2013. 214 p.][Toshin D.S., Anisimova M.P. Search for the optimal way to implement the iterative approximation in the calculation of the deformation model. Nauchnoe obozrenie [Scientific Review], 2016, no.17, pp. 25-29. (in Russian)]