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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">10.33979/2073-7416-2024-112-2-59-73</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-721</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>БЕЗОПАСНОСТЬ ЗДАНИЙ И СООРУЖЕНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BUILDING AND STRUCTURE SAFETY</subject></subj-group></article-categories><title-group><article-title>Устойчивость железобетонной колонны, подверженной сжатию с кручением в результате особого воздействия</article-title><trans-title-group xml:lang="en"><trans-title>Stability of a reinforced concrete column under compression with torsion caused by accidental action</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>Колчунов</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolchunov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колчунов Виталий Иванович - академик РААСН, доктор технических наук, профессор, профессор кафедры железобетонных и каменных конструкций,</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Kolchunov Vitaly Iv. - Full member of RAACS, Doctor of Tech. Sc., Professor, Professor of the Department of Reinforced Concrete and Masonry Structures,</p><p>Moscow</p></bio><email xlink:type="simple">asiorel@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савин Сергей Юрьевич - кандидат технических наук, доцент, доцент кафедры железобетонных и каменных конструкций,</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Savin Sergey Yu. - candidate of technical science, associate professor of the department of Reinforced Concrete and Masonry Structures,</p><p>Moscow</p></bio><email xlink:type="simple">savinsyu@mgsu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Амелина</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Amelina</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Амелина Маргарита Андреевна - аспирант кафедры железобетонных и каменных конструкций,</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Amelina Margarita A. - postgraduate student of the department of Reinforced Concrete and Masonry Structures,</p><p>Moscow</p></bio><email xlink:type="simple">margo.dremova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Национальный исследовательский Московский государственный строительный университет»</institution></aff><aff xml:lang="en"><institution>National Research Moscow State University of Civil Engineering</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>07</day><month>05</month><year>2024</year></pub-date><volume>0</volume><issue>2</issue><fpage>59</fpage><lpage>73</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колчунов В.И., Савин С.Ю., Амелина М.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Колчунов В.И., Савин С.Ю., Амелина М.А.</copyright-holder><copyright-holder xml:lang="en">Kolchunov V.I., Savin S.Y., Amelina M.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://construction.elpub.ru/jour/article/view/721">https://construction.elpub.ru/jour/article/view/721</self-uri><abstract><p>При аварийных ситуациях, связанных с внезапными отказами отдельных несущих элементов конструктивных систем зданий, в силу особенностей объемно-планировочных решений в отдельных колоннах могут дополнительно возникать крутящие моменты. Таким образом, колонны могут оказаться в условиях сложного напряженно-деформированного состояния. Целью данного исследования являлось построение полуаналитической расчетной модели для анализа устойчивости железобетонных колонн, подверженных сжатию с кручением в результате особого воздействия. Для достижения поставленной цели были сформулированы исходные гипотезы, составлены определяющие соотношений для расчета устойчивости железобетонной колонны, подверженной сжатию с кручением. Для обоснования достоверности предложенной модели была выполнена ее валидация путем сопоставления с результатами моделирования в программном комплексе Ansys. Анализа данных показал, наибольшая разница между результатами составила 8.08% для случая P = 0.4·Pcr,e = 126.6 кН. Наименьшая разница 3.6% составила для случая P = 0.9·Pcr,e = 284.85 кН. Показано, что по мере роста крутящего момента происходит снижение значения критической силы, вызывающей потерю устойчивости. Это связано как с действием крутящей пары сил при искривлении стержня, так и со снижением механических характеристик бетона при совместном действии нормальных и касательных напряжений.</p></abstract><trans-abstract xml:lang="en"><p>Under emergency situations associated with sudden failures of the load-bearing elements of the structure, torques may additionally occur in the columns due to the specifics of the structural design of the buildings. Thus, the columns may be in a complex stress-strain state. The objective of this study was to develop a semi-analytical design model for analysis of the stability of reinforced concrete columns subjected to compression with torsion as a result of an accidental action. For achieving the objective, authors formulated the initial hypotheses, developed the determining equations for calculating the stability of a reinforced concrete column subjected to compression with torsion. To validate the reliability of the proposed model, it has been compared with the results of modeling in the software complex Ansys. Analysis of the data showed that the largest difference between the results was up to 8.08% for the case P = 0.4·Pcr,e = 126.6 kN. The smallest difference of 3.6% was for the case P = 0.9·Pcr,e = 284.85 kN. It has been shown that as the torque increases, there is a decrease in the value of the critical force causing loss of stability. This is due both to the action of the torsional pair of forces during the distortion of the rod and to the decrease in the mechanical properties of concrete under the combined action of normal and tangential stresses.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>устойчивость</kwd><kwd>сжатие</kwd><kwd>кручение</kwd><kwd>железобетон</kwd><kwd>колонна</kwd><kwd>особое воздействие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>stability</kwd><kwd>compression</kwd><kwd>torsion</kwd><kwd>reinforced concrete</kwd><kwd>column</kwd><kwd>accidental action</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">Bažant Z.P., Verdure M. Mechanics of Progressive Collapse: Learning from World Trade Center and Building Demolitions // J Eng Mech. 2007. Vol. 133, № 3. P. 308–319.</mixed-citation><mixed-citation xml:lang="en">Bažant Z.P., Verdure M. 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