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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">construction</journal-id><journal-title-group><journal-title xml:lang="ru">Строительство и реконструкция</journal-title><trans-title-group xml:lang="en"><trans-title>Building and Reconstruction</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7416</issn><publisher><publisher-name>Орловский государственный университет имени И.С. Тургенева</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33979/2073-7416-2024-112-2-28-38</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-718</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ТЕОРИЯ ИНЖЕНЕРНЫХ СООРУЖЕНИЙ. СТРОИТЕЛЬНЫЕ КОНСТРУКЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORY OF ENGINEERING STRUCTURES. BUILDING UNITS</subject></subj-group></article-categories><title-group><article-title>Несовершенства для расчета стальных конструкций методом конечных элементов. Часть 1</article-title><trans-title-group xml:lang="en"><trans-title>Imperfections for the calculation of steel structures by the finite element method. Part 1</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Надольский</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nadolski</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Надольский Виталий Валерьевич - кандидат технических наук, доцент, доцент кафедры «Технологии строительного производства», г. Брест;</p><p>доцент кафедры «Строительных конструкций», г. Минск</p></bio><bio xml:lang="en"><p>Nadolski Vitali V. - candidate of technical science (PhD), docent, associated professor of the department of Building constructions;</p><p>Associate Professor of the Department of Building Structures,</p><p>Minsk</p></bio><email xlink:type="simple">nadolskivv@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>УО «Брестский государственный технический университет»;&#13;
Белорусский национальный технический университет</institution></aff><aff xml:lang="en"><institution>Brest State Technical University;&#13;
Belarusian National Technical University (BNTU)</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>06</day><month>05</month><year>2024</year></pub-date><volume>0</volume><issue>2</issue><fpage>28</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Надольский В.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Надольский В.В.</copyright-holder><copyright-holder xml:lang="en">Nadolski V.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://construction.elpub.ru/jour/article/view/718">https://construction.elpub.ru/jour/article/view/718</self-uri><abstract><p>Хорошо известно, что несовершенства всегда присутствуют в элементах конструкций. Несовершенства могут существенно влиять на поведение и несущую способность стальных конструкций, особенно в случае задач, связанных с устойчивостью. Поэтому несовершенства должны учитываться в модели несущей способности и их правильное приложение (задание формы и значения) является ключевым моментом в процессе численного анализа. В последние десятилетия в отечественном научном пространстве уделяется мало внимания актуализации моделей несовершенств для применения в численных моделях, в том числе с учетом современных более точных технологий изготовления и монтажа стальных конструкций. Целью данного исследования является аналитический обзор и анализ научных исследований и технической литературы с последующим синтезом и выработкой рекомендаций по несовершенствам применительно к расчету стальных конструкций посредством технологии компьютерного моделирования, в том числе методом конечных элементов. Результаты исследования содержат указания по способам задания форм и значений несовершенств для разных групп несовершенств. Статья состоит из двух частей. Первая часть посвящена вопросам изучения геометрических несовершенств, остаточных напряжений и правилам комбинации несовершенств, вторая часть статьи – эквивалентным несовершенствам.</p></abstract><trans-abstract xml:lang="en"><p>It is well known that imperfections are always present in structural elements. Imperfections can significantly affect the behavior and bearing capacity of steel structures, especially in the case of stability-related tasks. Therefore, inconsistencies must be taken into account in the loadbearing capacity model and their correct application (setting the shape and value) is a key point in the numerical analysis process. In recent decades, much attention has been paid in the domestic scientific space to updating imperfection models for use in numerical models, including taking into account modern more accurate manufacturing and installation technologies for steel structures. The purpose of this study is an analytical review and analysis of scientific research and technical literature, followed by synthesis and elaboration of recommendations on imperfections in relation to the calculation of steel structures using computer modeling technology, including the finite element method. The results of the study contain instructions on how to set the shapes and values of imperfections for different groups of imperfections. The article consists of two parts. The first part is devoted to the study of geometric imperfections, residual stresses and rules for the combination of imperfections, the second part of the article is devoted to equivalent imperfections.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерное моделирование</kwd><kwd>несовершенства</kwd><kwd>дефекты</kwd><kwd>остаточные напряжения</kwd><kwd>метод конечных элементов</kwd><kwd>искривления балки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computer modeling</kwd><kwd>imperfections</kwd><kwd>defects</kwd><kwd>residual stresses</kwd><kwd>finite element method</kwd><kwd>beam curvature</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Graciano C., Ayestarán A. Steel plate girder webs under combined patch loading, bending and shear // Journal of Constructional Steel Research. 2013. Vol. 80. P. 202–212. 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