Structural Mechanics of Engineering Constructions and BuildingsStructural Mechanics of Engineering Constructions and BuildingsСтроительная механика инженерных конструкций и сооружений1815-52352587-8700Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)5314810.22363/1815-5235-2026-22-4-431-441LWBQCEExperimental researchesЭкспериментальные исследованияResearch ArticleThe Graphical Method of Design for Flexural Members Using the SP 16.13330.2017 StandardГрафический метод проектирования изгибаемых элементов с использованием стандарта СП 16.13330.2017https://orcid.org/0000-0003-2493-72552765-7069GalishnikovaVera V.ГалишниковаВера Владимировна

Doctor of Technical Sciences, Professor of the department of Architecture and Restoration, Academy of Engineering

доктор технических наук, профессор кафедры архитектуры и реставрации, инженерная академия

galishni@yandex.ruhttps://orcid.org/0000-0002-7168-57869753-3906GebreTesfaldet H.ГебреТесфалдет Хадгембес

Candidate of Technical Sciences, Associate Professor of the Department of Architecture and Restoration, Academy of Engineering, RUDN University; Associate Professor of the Department of Structural and Theoretical Mechanics, Moscow State University of Civil Engineering

кандидат технических наук, доцент кафедры архитектуры и реставрации, инженерная академия, Российский университет дружбы народов; доцент кафедры строительной и теоретической механики, Национальный исследовательский Московский государственный строительный университет

tesfaldethg@gmail.comRUDN UniversityРоссийский университет дружбы народовMoscow State University of Civil Engineering (National Research University)Национальный исследовательский Московский государственный строительный университет29102026224VOL 22, NO4 (2025)ТОМ 22, №4 (2025)43144129102026Copyright ©; 2026, Galishnikova V.V., Gebre T.H.Copyright ©; 2026, Галишникова В.В., Гебре Т.Х.2026Galishnikova V.V., Gebre T.H.Галишникова В.В., Гебре Т.Х.https://creativecommons.org/licenses/by-nc/4.0https://journals.rudn.ru/structural-mechanics/article/view/53148

The objective of this paper is to propose the graphical design method for doubly symmetric steel beam section under flexural load compliant to the latest draft of the SP 16.13330.2017 standard. There are different design approaches for steel structures, including manual calculation, computer programs and hybrid methods which are used in different design standards for calculating allowable strength of flexural members. The graphical approach is commonly used in American Institute of Steel Construction as an alternative method and aims in improving the design efficiency for elastic and inelastic flexural members. The current method is intended to design flexural members according to the Russian design standards of the steel construction (SP 16.13330.2017) for steel sections commonly used, and available in the Russian Federation. The results consist of graphical demonstration of the relationships between the nominal flexural strength and the effective member length for various crosssectional sizes. Using this graphical method to design flexural members can help the designer to select the optimum steel sections, furthermore it will be more helpful to the steel manufacturer to recommend more new Russian steel sections to narrow the gaps between the consecutive section dimensions. With the increasing demands of slender members, the graphical approach is a quick method of design for engineers and researchers to select an optimum steel beam section. In addition, this paper provides a practical example which confirms the efficiency and simplicity of designing a flexural member using this method.

Цель исследования - предложить метод графического проектирования двусимметричного сечения стальной балки при изгибе в соответствии с последним проектом СП 16.13330.2017. Существуют различные подходы к проектированию стальных конструкций, включая ручной расчет, компьютерные программы и гибридные методы, которые используются в разных нормах проектирования для расчета допустимой прочности элемента на изгиб. Графический подход широко используется в Американском институте стальных конструкций в качестве альтернативного метода и направлен на повышение эффективности проектирования упругих и неупругих изгибаемых элементов. Настоящий метод предназначен для проектирования изгибаемых элементов в соответствии с российскими нормами проектирования стальных конструкций (СП 16.13330.2017) для стальных профилей, широко используемых и доступных в Российской Федерации. Результаты работы представляют собой графическую демонстрацию соотношения между номинальной прочностью на изгиб и эффективной длиной элемента для различных размеров поперечного сечения. Использование этого графического метода для проектирования изгибаемых элементов может помочь проектировщику в дальнейшем подборе оптимальных стальных профилей, а производителю стали будет полезен для рекомендации большего количества новых российских стальных профилей для уменьшения зазоров между последовательными размерами профиля. В связи с растущими требованиями к гибким элементам графический подход является быстрым методом проектирования, позволяющим инженерам и исследователям выбрать оптимальное сечение стальной балки. Кроме того, в данной статье приводится практический пример, подтверждающий эффективность и простоту проектирования гибких элементов.

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