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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">27077</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2021-17-2-175-187</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Theory of elasticity</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Теория упругости</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Areas of rational operation of steel rolling beams secured against curvatures</article-title><trans-title-group xml:lang="ru"><trans-title>Области рациональной работы стальных прокатных балок, закрепленных от потери устойчивости</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6588-6031</contrib-id><name-alternatives><name xml:lang="en"><surname>Golikov</surname><given-names>Aleksandr V.</given-names></name><name xml:lang="ru"><surname>Голиков</surname><given-names>Александр Владимирович</given-names></name></name-alternatives><bio xml:lang="en"><p>Associate Professor of the Department of Building Structures, Foundations and Reliability of Structures, Institute of Architecture and Construction, Candidate of Technical Sciences</p></bio><bio xml:lang="ru"><p>доцент кафедры строительных конструкций, оснований и надежности сооружений, Институт архитектуры и строительства, кандидат технических наук</p></bio><email>alexandr_golikov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8121-0338</contrib-id><name-alternatives><name xml:lang="en"><surname>Veremeev</surname><given-names>Dmitry V.</given-names></name><name xml:lang="ru"><surname>Веремеев</surname><given-names>Дмитрий Валерьевич</given-names></name></name-alternatives><bio xml:lang="en"><p>student of the Department of Building Structures, Foundations and Reliability of Structures, Institute of Architecture and Construction</p></bio><bio xml:lang="ru"><p>студент кафедры строительных конструкций, оснований и надежности сооружений, Институт архитектуры и строительств</p></bio><email>alexandr_golikov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Volgograd State Technical University</institution></aff><aff><institution xml:lang="ru">Волгоградский государственный технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-07-20" publication-format="electronic"><day>20</day><month>07</month><year>2021</year></pub-date><volume>17</volume><issue>2</issue><issue-title xml:lang="en">VOL 17, NO2 (2021)</issue-title><issue-title xml:lang="ru">ТОМ 17, №2 (2021)</issue-title><fpage>175</fpage><lpage>187</lpage><history><date date-type="received" iso-8601-date="2021-07-20"><day>20</day><month>07</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Golikov A.V., Veremeev D.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Голиков А.В., Веремеев Д.В.</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Golikov A.V., Veremeev D.V.</copyright-holder><copyright-holder xml:lang="ru">Голиков А.В., Веремеев Д.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/27077">https://journals.rudn.ru/structural-mechanics/article/view/27077</self-uri><abstract xml:lang="en"><p style="text-align: justify;">Relevance. Beam cages are the most common type of floor covering for working areas of buildings and structures. Based on the results of a critical analysis of the existing methods for calculating and arranging the dimensions of beam cells, it was established that there are no clear recommendations on the rational range of selection of the sizes of beam cells depending on the surface load. The purpose of the study is to present the areas of rational operation of steel rolling beams, secured against buckling, based on the requirements of the calculation by the method of limit states. Methods. The tasks set in the work, aimed at achieving the research goal, are solved by analytical methods, relying on the basic laws of structural mechanics and existing knowledge about the actual operation of steel rolling beams under load. Methods of mathematical statistics were used to construct the main dependencies presented on the nomograms. Results. Areas of rational operation of steel rolling beams, secured against curvatures, are determined. The area of rational operation of beams is presented in the form of nomograms, which allow at the design stage to use a beam cell of maximum dimensions. As a criterion for rationalization, the criterion of the simultaneous satisfaction of the accepted section of the beam with the requirements of two groups of limiting states with minimum reserves was chosen. A refined algorithm for the layout of the beam cages and a refined method for calculating the cross-section of rolled beams are proposed, which make it possible to arrange the dimensions of the beam cage with a minimum steel consumption. The increase in the overall dimensions of the cells of the working platforms is substantiated.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Актуальность. Балочные клетки наиболее распространенный тип перекрытий рабочих площадок зданий и сооружений. По результатам критического анализа существующих методов расчета и компоновки размеров балочных клеток установлено отсутствие четких рекомендации по рациональной области выбора размеров балочных клеток в зависимости от поверхностной нагрузки. Цель исследования - представить области рациональной работы стальных прокатных балок, закрепленных от потери устойчивости, исходя из требований расчета по методу предельных состояний. Методы. Поставленные в работе задачи, направленные на достижения цели исследования, решены аналитическими методами, опираясь на основные закономерности строительной механики и существующие знания о действительной работе стальных прокатных балок под нагрузкой. Для построения основных зависимостей, представленных на номограммах, применены методы математической статистики. Результаты. Определены области рациональной работы стальных прокатных балок, закрепленных от потери устойчивости. Область рациональной работы балок представлена в виде номограмм, позволяющих на стадии проектирования применить ячейку балочной клетки максимальных размеров. В качестве критерия рационализации выбран критерий одновременного удовлетворения принятого сечения балки требованиям двух групп предельных состояний с минимальными запасами. Предложен уточненный алгоритм компоновки балочных клеток и уточненная методика расчета сечения прокатных балок, позволяющие компоновать размеры балочной клетки с минимальным расходом стали. Обосновано увеличение габаритных размеров ячеек рабочих площадок.</p></trans-abstract><kwd-group xml:lang="en"><kwd>steel rolled beams</kwd><kwd>calculation methodology</kwd><kwd>rationalization</kwd><kwd>range of rolled profiles</kwd><kwd>limit state design</kwd><kwd>bearing capacity</kwd><kwd>stiffness</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>стальные прокатные балки</kwd><kwd>методика расчета</kwd><kwd>рационализация</kwd><kwd>сортамент прокатных профилей</kwd><kwd>предельное состояние</kwd><kwd>несущая способность</kwd><kwd>жесткость</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Perelmuter A.V. The constructive form number one. Metal constructions. 2012;18(1):27-39. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Перельмутер А.В. Конструктивна форма номер один // Металлические конструкции. 2012. Т. 18. № 1. 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