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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">10.22227/1997-0935.2024.5.763-777</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-269</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>Надежность пространственных стержневых металлических конструкций высокого уровня ответственности</article-title><trans-title-group xml:lang="en"><trans-title>Reliability of spatial rod metal structures of high level of responsibility</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3188-3400</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мущанов</surname><given-names>В. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Mushchanov</surname><given-names>V. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Филиппович Мущанов — доктор технических наук, профессор, заведующий кафедрой теоретической и прикладной механики, проректор по научной работе</p><p>286123, г. Макеевка, Донецкая Народная Республика, ул. Державина, д. 2</p><p>Scopus: 55988406500, ResearcherID: ААО-8875-2021</p></bio><bio xml:lang="en"><p>Vladimir F. Mushchanov — Doctor of Technical Sciences, Professor, Head of the Department of Theoretical and Applied Mechanics, Vice-Rector for Research</p><p>2 Derzhavina st., Makeevka, 286123, Donetsk People’s Republic</p><p>Scopus: 55988406500, ResearcherID: ААО-8875-2021</p></bio><email xlink:type="simple">mvf@donnasa.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9332-3807</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Оржеховский</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Orzhekhovskiy</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анатолий Николаевич Оржеховский — кандидат технических наук, доцент кафедры теоретической и прикладной механики</p><p>286123, г. Макеевка, Донецкая Народная Республика, ул. Державина, д. 2</p><p>Scopus: 85079126906</p></bio><bio xml:lang="en"><p>Anatoly N. Orzhekhovskiy — Candidate of Technical Sciences, Associate Professor of the Department of Theoretical and Applied Mechanics</p><p>2 Derzhavina st., Makeevka, 286123, Donetsk People’s Republic</p><p>Scopus: 85079126906</p></bio><email xlink:type="simple">aorzhehovskiy@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4381-9476</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мущанов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mushchanov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Владимирович Мущанов — кандидат технических наук, доцент кафедры металлических конструкций</p><p>286123, г.  Макеевка, Донецкая Народная Республика, ул. Державина, д. 2</p><p>ResearcherID: HDO-4425-2022</p></bio><bio xml:lang="en"><p>Alexander V. Mushchanov — Candidate of Technical Sciences, Associate Professor of the Department of Metal Structures</p><p>2 Derzhavina st., Makeevka, 286123, Donetsk People’s Republic</p><p>ResearcherID: HDO-4425-2022</p></bio><email xlink:type="simple">a.v.mushchanov@donnasa.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1729-4127</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цепляев</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tseplyaev</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максим Николаевич Цепляев — кандидат технических наук, доцент кафедры теоретической и прикладной механики</p><p>286123, г. Макеевка, Донецкая Народная Республика, ул. Державина, д. 2</p><p>Scopus: 57208101665</p></bio><bio xml:lang="en"><p>Maxim N. Tseplyaev — Candidate of Technical Sciences, Associate Professor of the Department of Theoretical and Applied Mechanics; PhD (Engineering), lecturer of the department, department of theoretical and applied mechanics</p><p>2 Derzhavina st., Makeevka, 286123, Donetsk People’s Republic</p><p>Scopus: 57208101665</p></bio><email xlink:type="simple">m.n.cepliaev@donnasa.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Донбасская национальная академия строительства и архитектуры (ДОННАСА)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Donbas National Academy of Civil Engineering and Architecture (DonNACEA)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>29</day><month>05</month><year>2024</year></pub-date><volume>19</volume><issue>5</issue><fpage>763</fpage><lpage>777</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мущанов В.Ф., Оржеховский А.Н., Мущанов А.В., Цепляев М.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Мущанов В.Ф., Оржеховский А.Н., Мущанов А.В., Цепляев М.Н.</copyright-holder><copyright-holder xml:lang="en">Mushchanov V.F., Orzhekhovskiy A.N., Mushchanov A.V., Tseplyaev M.N.</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/269">https://www.vestnikmgsu.ru/jour/article/view/269</self-uri><abstract><sec><title>Введение</title><p>Введение. Пространственные стержневые металлические конструкции высокого уровня ответственности являются одними из наиболее часто используемых в качестве конструктивных систем для перекрытия больших пролетов зданий и сооружений. Однако в данных системах при неблагоприятном сочетании факторов может активно развиваться прогрессирующее разрушение. Цель исследования — разработка научного обоснования новых подходов к проектированию устойчивых к развитию прогрессирующего обрушения оптимальных пространственных строительных металлоконструкций высокого уровня ответственности с гарантированными уровнями надежности ключевых и второстепенных элементов.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Применялись методы строительной механики в форме метода конечных элементов, методы теории подобия, методы теории надежности строительных конструкций.</p></sec><sec><title>Результаты</title><p>Результаты. Разработан двухэтапный алгоритм оценки надежности, отличающийся от ранее разработанных возможностью оценки развития прогрессирующего обрушения. Приведены результаты его апробации для рамно-консольных конструкций покрытий над трибунами стадионов в виде установленных значений показателей надежности для набора ключевых элементов. Аналогичная оценка выполнена для реализованного проекта реконструкции большепролетного покрытия спорткомплекса «Ильичевец» (г. Мариуполь).</p></sec><sec><title>Выводы</title><p>Выводы. Для оценки надежности исследуемых конструкций с учетом склонности к развитию прогрессирующего обрушения предложен и апробирован в практическом проектировании универсальный алгоритм, ключевыми составляющими которого являются компьютерное моделирование процесса последовательных отказов элементов конструкции и установление для выделенной совокупности ключевых элементов значений вероятности отказа. Выполненные на его основе исследования позволили для рамно-консольных покрытий над трибунами стадионов выделить набор ключевых элементов консольной части, отказ которых инициирует начало лавинообразного обрушения, и установить для них пределы изменения величин характеристик безопасности и резерва живучести. Дополнительно основные положения разработанного подхода прошли опытную апробацию при разработке и реализации проекта усиления большепролетных несущих конструкций покрытия спорткомплекса «Ильичевец» (г. Мариуполь).</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Spatial rod metal structures of high level of responsibility are the most frequently used as structural systems for covering large spans of buildings and structures. However, progressive destruction can actively develop in these systems under unfavorable combination of factors. The aim of the research is to develop scientific justification of new approaches to the design of optimal spatial metal structures resistant to the development of progressive collapse of high level of responsibility with guaranteed levels of reliability of key and secondary elements.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The main research methods in the work are methods of structural mechanics in the form of the finite element method, methods of similarity theory, and methods of the theory of reliability of building structures.</p></sec><sec><title>Results</title><p>Results. As a result of the research work for the considered structures, a 2-stage algorithm for assessing reliability was developed, which differs from the previously developed ones by the possibility of assessing the development of progressive collapse. The results of its testing for frame-cantilever structures of coverings over stadium stands are presented in the form of established values of reliability indicators for a set of key elements. A similar assessment was made for the implemented reconstruction project of the long-span covering of the “Ilyichevets” sports complex (Mariupol).</p></sec><sec><title>Conclusions</title><p>Conclusions. To assess the reliability of the studied structures, taking into account the tendency to the development of progressive collapse, a universal algorithm is proposed and tested in practical design, the main components of which are computer modelling of the process of successive failures of structural elements, and the establishment of failure probability values for the selected set of key elements. The studies carried out on the basis of its algorithm made it possible to identify a set of key elements of the cantilever part for the frame-cantilever coverings above the stadium stands, the failure of which initiates the beginning of an avalanche-like collapse, and to set limits for them to change the values of safety characteristics and survivability reserve. Additionally, the main provisions of the developed approach were experimentally tested during the development and implementation of the project of reinforcement of large-span bearing structures of the covering of the “Ilyichevets” sports complex (Mariupol).</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>металлические конструкции</kwd><kwd>численные методы</kwd><kwd>лавинообразное разрушение</kwd><kwd>надежность</kwd><kwd>живучесть</kwd></kwd-group><kwd-group xml:lang="en"><kwd>metal structures</kwd><kwd>numerical methods</kwd><kwd>progressive collapse</kwd><kwd>reliability</kwd><kwd>survivability</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность организаторам конференции «Расчет и проектирование металлических и деревянных конструкций», посвященной 110-летию со дня рождения Е.И. Белени и 130-летию со дня рождения Г.Г. Карлсена, за возможность представить на ее площадках основные результаты данного исследования, услышать мнение коллег по рассматриваемым вопросам, что было весьма ценно и учтено при подготовки статьи к печати.</funding-statement><funding-statement xml:lang="en">The authors express their gratitude to the organizers of the conference “Calculation and design of metal and wooden structures”, dedicated to the 110th anniversary of the birth of E.I. Belenya and the 130th anniversary of the birth of G.G. Carlsen, for the opportunity to present the main results of this study, to hear the opinion of colleagues on the issues under consideration, which was very valuable and taken into account when preparing the paper for publication.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ведяков И.И., Еремеев П.Г., Одесский П.Д., Попов Н.А., Соловьев Д.В. 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