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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">concconc</journal-id><journal-title-group><journal-title xml:lang="ru">Железобетонные конструкции</journal-title><trans-title-group xml:lang="en"><trans-title>Reinforced concrete structures</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-1622</issn><issn pub-type="epub">2949-1614</issn><publisher><publisher-name>Национальный исследовательский Московский государственный строительный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/2949-1622.2024.2.54-63</article-id><article-id custom-type="elpub" pub-id-type="custom">concconc-51</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>КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕ В СТРОИТЕЛЬСТВЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>COMPUTER MODELLING IN CONSTRUCTION</subject></subj-group></article-categories><title-group><article-title>Расчет железобетонных рам на особую расчетную ситуацию с учетом дискретного моделирования трещин</article-title><trans-title-group xml:lang="en"><trans-title>Calculation of Reinforced Concrete Frames for a Special Design Situation with Discrete Crack Modeling</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6697-3388</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савин</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Savin</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Юрьевич Савин, кандидат технических наук, доцент, доцент кафедры железобетонных и каменных конструкций</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 57052453700, ResearcherID: M-8375-2016</p></bio><bio xml:lang="en"><p>Sergei Yu. Savin, Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Reinforced Concrete and MasonryStructures</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 57052453700, ResearcherID: M-8375-2016 </p></bio><email xlink:type="simple">suwin@yandex.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/0000-0001-6885-588X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ильющенко</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Iliushchenko</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Александровна Ильющенко, кандидат технических наук, старший преподаватель кафедры промышленного и гражданского строительства</p><p>305000, г. Курск, ул. Радищева, 29</p><p>Scopus: 57213811914, ResearcherID: AAJ-6459-2021</p></bio><bio xml:lang="en"><p>Tatiana A. Iliushchenko, Candidate of Technical Sciences, Senior Lecturer of the Department of Industrial and Civil Engineering</p><p>29 Radishcheva St., Kursk, 305000</p><p>Scopus: 57213811914, ResearcherID: AAJ-6459-2021</p></bio><email xlink:type="simple">tatkhalina93@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Курский государственный университет (КГУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kursk State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2024</year></pub-date><volume>6</volume><issue>2</issue><fpage>54</fpage><lpage>63</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савин С.Ю., Ильющенко Т.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Савин С.Ю., Ильющенко Т.А.</copyright-holder><copyright-holder xml:lang="en">Savin S.Y., Iliushchenko T.A.</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.g-b-k.ru/jour/article/view/51">https://www.g-b-k.ru/jour/article/view/51</self-uri><abstract><p>Предложена методика расчета железобетонных каркасов зданий на особую расчетную ситуацию, вызванную начальными локальными разрушениями, с учетом нарушения сплошности бетонной матрицы при трещинообразовании. Выполнена верификация предложенной методики путем сопоставления с результатами экспериментальных данных для П-образной железобетонной рамы с затяжкой. Изгибающие моменты в раме, определенные с использованием предложенной методики расчета, практически полностью совпали со значениями, полученными экспериментально. В результате трещинообразования произошло перераспределение изгибающих моментов в ригеле рамы: уменьшение моментов в конструктивных узлах на 148 % и увеличение в пролете на 37,5 % по сравнению с результатами, полученными с помощью традиционного подхода метода конечных элементов. На основе результатов расчета железобетонной 3-этажной рамы по предложенной методике выявлено увеличение продольных растягивающих усилий в опорных сечения ригеля над зоной локального разрушения при отказе колонны среднего ряда по сравнению с традиционным подходом к моделированию. Выявленный эффект может привести к усилению влияния продольного изгиба для колонны крайнего ряда, к которой примыкает ригель.</p></abstract><trans-abstract xml:lang="en"><p>The methodology of calculation of reinforced concrete frames of buildings for a special design situation caused by initial local failures, taking into account the violation of the continuity of the concrete matrix during crack formation, is proposed. The verification of the proposed methodology is carried out by comparing it with the results of experimental data for a U-shaped reinforced concrete frame with prestressing. The bending moments in the frame, determined by the proposed calculation method, are in practically complete agreement with the values found experimentally. As a result of cracking, there was a redistribution of bending moments in the beam of the frame: the moments in the structural nodes decreased by 148 % and increased in the span by 37.5 % compared to the results obtained using the traditional finite element method approach. On the basis of the results of the calculation of the reinforced concrete 3-storey frame by the proposed method, the increase of longitudinal tensile forces in the beam support sections above the zone of local failure at failure of the middle row column is revealed in comparison with the traditional approach to modeling. The revealed effect may lead to an increase in the influence of longitudinal bending for the outermost row column to which the beam is adjacent.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>железобетон</kwd><kwd>рама</kwd><kwd>трещины</kwd><kwd>аварийное воздействие</kwd><kwd>метод конечных элементов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reinforced concrete</kwd><kwd>frame</kwd><kwd>cracks</kwd><kwd>accidental impact</kwd><kwd>finite element method</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-49-10010, URL: https://rscf.ru//project/24-49-10010/</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation grant No. 24-49-10010, URL: https://rscf.ru//project/24-49-10010/</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">Adam J.M. et al. 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