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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">mgssuvest</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник МГСУ</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik MGSU</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-0935</issn><issn pub-type="epub">2304-6600</issn><publisher><publisher-name>Moscow State University of Civil Engineering (National Research University) (MGSU)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/1997-0935.2024.10.1606-1616</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-394</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>Проектирование и конструирование строительных систем. Строительная механика. Основания и фундаменты, подземные сооружения</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Construction system design and layout planning. Construction mechanics. Bases and foundations, underground structures</subject></subj-group></article-categories><title-group><article-title>Коэффициенты надежности для стальных элементов, проектируемых на основе компьютерных численных моделей</article-title><trans-title-group xml:lang="en"><trans-title>Reliability factors for steel elements designed on the basis of computer numerical models</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4211-7843</contrib-id><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>Виталий Валерьевич Надольский — кандидат технических наук, доцент, доцент кафедры технологии строительного производства; доцент кафедры строительных конструкций</p><p>224017, г. Брест, ул. Московская, д. 267;220013, г. Минск, пр-т Независимости, д. 65</p><p>РИНЦ AuthorID: 859575, Scopus: 56153169800</p></bio><bio xml:lang="en"><p>Vitali V. Nadolski — Candidate of Technical Sciences, Associate Professor, Associate Professor of the Building Production Technologies; Associate Professor of the Department of Building Structures</p><p>267 Moskovskaya st., Brest, 224017; 65 Independence avenue, Minsk, 220013</p><p>RISC AuthorID: 859575, Scopus: 56153169800</p></bio><email xlink:type="simple">Nadolskiv@mail.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Брестский государственный технический университет (БрГТУ); Белорусский национальный технический университет (БНТУ)</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Brest State Technical University (BrSTU); Belarusian National Technical University (BNTU)</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>31</day><month>10</month><year>2024</year></pub-date><volume>19</volume><issue>10</issue><fpage>1606</fpage><lpage>1616</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://www.vestnikmgsu.ru/jour/article/view/394">https://www.vestnikmgsu.ru/jour/article/view/394</self-uri><abstract><sec><title>Введение</title><p>Введение. Сегодня для оценки несущей способности строительных конструкций все больше полагаются на компьютерные численные модели. Однако малое количество исследований затрагивает вопросы обеспечения надежности получаемых результатов. В существующей практике проектирования проектная надежность конструкций обеспечивается системой частных коэффициентов надежности, которые учитывают изменчивость случайных физических величин и точность модели. Поэтому важно закрепление значений коэффициентов надежности или методики их определения в нормах проектирования.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Предложенный метод установления коэффициентов надежности и их значения основаны на методе теории надежности первого порядка. Статистические характеристики случайных величин и метрики точности компьютерной модели (КМ) базируются на систематизации, анализе и обобщении имеющихся исследований.</p></sec><sec><title>Результаты</title><p>Результаты. Представлена система коэффициентов надежности и методика их определения для изученных конструктивных решений и стандартизированных параметров КМ. Приведены результаты исследований статистических характеристик метрики точности КМ. Предложены значения коэффициентов пересчета, позволяющие учитывать разные модели материала, степень дискретизации и значения несовершенств.</p></sec><sec><title>Выводы</title><p>Выводы. В области проектирования строительных конструкций следует выделить два крайних случая применения компьютерных численных моделей с позиции изученности моделируемого объекта (для новых конструктивных решений и для изученных конструктивных решений) и два крайних случая с позиции изученности параметров модели (применяются стандартизированные или нестандартизированные параметры КМ). В зависимости от рассматриваемого случая должны быть указаны процедуры проверки модели и назначены способы обеспечения проектной надежности.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Today, there is an increasing reliance on computer computational models to assess the load-bearing capacity of building structures. However, a very small number of studies address issues of ensuring the reliability of the obtained results. In the current design practice, the design reliability of structures is provided by a system of partial reliability factors that take into account the uncertainty of random variable and the accuracy of the model. Therefore, fixing the values of reliability factors or the methodology for determining them in the design standards is especially important.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The proposed method for determining reliability factors and their values are based on the methods of reliability theory and probability theory. Statistical characteristics of random variables and accuracy of the computer model are based on the systematization, analysis and generalization of existing studies.</p></sec><sec><title>Results</title><p>Results. The paper presents a system of reliability factors and a method for determining them for the studied construction solutions and standardized parameters of computer models. The results of studies of statistical characteristics of the measure of accuracy of computer models are presented. The values of conversion coefficients are proposed, which allow taking into account different models of the material, the degree of discretization and the values of imperfections.</p></sec><sec><title>Conclusions</title><p>Conclusions. In the field of design of building structures, two extreme cases of using computer numerical models from the position of knowledge of the studied object (for new structural solutions and for studied solutions) and two extreme cases from the position of knowledge of model parameters (validated (standardized) or non-validated (non-standardized) computer model parameters are used). Depending on the case under consideration, model verification procedures should be specified and ways to ensure design reliability should be assigned.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>метод конечных элементов (МКЭ)</kwd><kwd>численная модель</kwd><kwd>компьютерная модель</kwd><kwd>дискретизация</kwd><kwd>погрешность модели</kwd><kwd>расчетное значение</kwd><kwd>коэффициент надежности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite element method (FEM)</kwd><kwd>numerical model</kwd><kwd>computer model</kwd><kwd>discretization</kwd><kwd>model error</kwd><kwd>design value</kwd><kwd>partial factor</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Автор выражает благодарность своим наставникам: профессорам Юрию Семеновичу Мартынову и Виктору Владимировичу Туру, а также анонимным рецензентам за конструктивные замечания и предложения.</funding-statement><funding-statement xml:lang="en">The author would like to thank his mentors, Professors Yuri S. 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