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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">10.22227/2949-1622.2023.2.3-12</article-id><article-id custom-type="elpub" pub-id-type="custom">concconc-11</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 БЕТОНА И ЖЕЛЕЗОБЕТОНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORY OF CONCRETE AND REINFORCED CONCRETE</subject></subj-group></article-categories><title-group><article-title>Анализ устойчивости железобетонной колонны при горизонтальных ударных воздействиях</article-title><trans-title-group xml:lang="en"><trans-title>Stability of the RC Column under Horizontal Impacts</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4765-5819</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексейцев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseytsev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анатолий Викторович Алексейцев, доктор технических наук, доцент, доцент, Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</p><p>Scopus: 57191530761, Researcher ID: I-3663-2017</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Anatoly V. Alekseytsev, Doctor of Technical Sciences, Associate Professor, Associate Professor of the Department of Reinforced Concrete and Masonry Structures, Moscow State University of Civil Engineering (National Research University) (MGSU)</p><p>Scopus: 57191530761, Researcher ID: I-3663-2017</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">aalexw@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Национальный исследовательский Московский государственный строительный университет<country>Россия</country></aff><aff xml:lang="en">Moscow State University of Civil Engineering (National Research University) (MGSU)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>13</day><month>04</month><year>2023</year></pub-date><volume>2</volume><issue>2</issue><fpage>3</fpage><lpage>12</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алексейцев А.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Алексейцев А.В.</copyright-holder><copyright-holder xml:lang="en">Alekseytsev A.V.</copyright-holder><license 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/11">https://www.g-b-k.ru/jour/article/view/11</self-uri><abstract><p>Рассмотрены подходы к оценке устойчивости железобетонных колонн при возникновении горизонтального аварийного удара. Для этого выполнялось конечно-элементное моделирование системы в объемной постановке, расчет по деформированной схеме в рамках нелинейного статического анализа и динамического переходного процесса. При построении модели использовались гексаэдрические элементы, работающие в соответствии с моделью Друкера-Прагера для бетона, а для моделирования арматуры пространственные стержни, деформируемые по модели Прандтля. Ударное воздействие рассматривалось в виде кратковременного импульса постоянной интенсивности. Построены графики зависимости для критической силы для различных сценариев аварийных воздействий на колонну. Результаты исследований могут быть использованы для оценки сопротивляемости железобетонных конструкций прогрессирующему разрушению при их вариантном проектировании и оптимизации.</p></abstract><trans-abstract xml:lang="en"><p>Approaches to assessment of stability of reinforced concrete columns in case of horizontal emergency impact have been investigated. For this purpose, finite-element modeling of the system in spatial formulation, calculation according to the deformed scheme in the scope of nonlinear static analysis and dynamic transient process have been implemented. When constructing the model, the hexahedral elements were used, working in accordance with the Drucker-Prager model for concrete, and the rebars deformed according to the Prandtl model were used to modelling the reinforcement.</p><p>The impact action was considered as a short-term pulse of constant intensity. Dependence diagrams for critical force on various scenarios of emergency impacts on the column have been obtained. Results of researches can be used for an estimation of resistance to the progressive collapse of reinforced concrete structures at their variants design and optimization.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>устойчивость</kwd><kwd>железобетонные конструкции</kwd><kwd>численное моделирование</kwd><kwd>ударные воздействия</kwd><kwd>деформации</kwd><kwd>колонны</kwd></kwd-group><kwd-group xml:lang="en"><kwd>stability</kwd><kwd>reinforced concrete structures</kwd><kwd>numerical simulation</kwd><kwd>impact</kwd><kwd>deformations</kwd><kwd>columns</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">Kolchunov V.I., Savin S.Yu. Survivability criteria for reinforced concrete frame at loss of stability // Magazine of Civil Engineering. 2018. No 4 (80). С. 73-80.</mixed-citation><mixed-citation xml:lang="en">Kolchunov V.I., Savin S.Yu. 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