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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">10.22227/1997-0935.2025.8.1165-1177</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-695</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>Программа экспериментальных исследований сложно напряженных узлов железобетонных конструкций</article-title><trans-title-group xml:lang="en"><trans-title>Experimental research programme of complex stressed nodes of reinforced concrete structures</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5075-1134</contrib-id><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>Владимир Иванович Колчунов — доктор технических наук, профессор, профессор кафедры инженерной графики и компьютерного моделирования, член-корреспондент РААСН</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 57219135548, ResearcherID: S-7792-2016</p></bio><bio xml:lang="en"><p>Vladimir I. Kolchunov — Doctor of Technical Sciences, Professor, Professor of the Department of Engineering Graphics and Computer Modeling, Corresponding Member of RAACS</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 57219135548, ResearcherID: S-7792-2016</p></bio><email xlink:type="simple">vlik52@mail.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/0000-0003-1847-4303</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кореньков</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Korenkov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Павел Анатолиевич Кореньков — кандидат технических наук, доцент, доцент кафедры промышленного и гражданского строительства</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 57193453366, ResearcherID: AAG-4024-2020</p></bio><bio xml:lang="en"><p>Pavel A. Korenkov — Candidate of Technical Sciences, Associated Professor, Associated Professor of the Department of Industrial and Civil Engineering</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 57193453366, ResearcherID: AAG-4024-2020</p></bio><email xlink:type="simple">kpa_gbk@mail.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/0000-0002-5392-9150</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федорова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedorova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталия Витальевна Федорова — доктор технических наук, профессор, заведующий кафедрой промышленного и гражданского строительства, советник РААСН</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 57196437054, Researcher ID: V-7282-2018</p></bio><bio xml:lang="en"><p>Natalia V. Fedorova — Doctor of Technical Sciences, Professor, Head of the Department of Industrial and Civil Engineering, Advisor of RAACS</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 57196437054, Researcher ID: V-7282-2018</p></bio><email xlink:type="simple">fedorovanv@mfmgsu.ru</email><xref ref-type="aff" rid="aff-1"/></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><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>08</month><year>2025</year></pub-date><volume>20</volume><issue>8</issue><fpage>1165</fpage><lpage>1177</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колчунов В.И., Кореньков П.А., Федорова Н.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Колчунов В.И., Кореньков П.А., Федорова Н.В.</copyright-holder><copyright-holder xml:lang="en">Kolchunov V.I., Korenkov P.A., Fedorova N.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/695">https://www.vestnikmgsu.ru/jour/article/view/695</self-uri><abstract><sec><title>Введение</title><p>Введение. В последние годы проведены ряд экспериментальных и значительное количество численных исследований с целью изучения механизмов сопротивления железобетонных каркасов зданий как при проектных нагрузках, так и при аварийных и особых аварийных воздействиях. Актуальность подобных исследований определяется необходимостью оценки деформирования и разрушения таких конструктивных систем в целом и фрагментарным изучением узлов рам и стен, содержащих как зоны чистого изгиба, так и зоны поперечного изгиба при наличии и отсутствии продольных сил. Напряженно-деформированное состояние (НДС) и координаты точек образования пространственных трещин в конструкциях таких фрагментов остаются малоизученными, в совокупности с неисследованными эффектами, возникающими при нарушении сплошности железобетона.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. При разработке объема экспериментальных исследований особое внимание было уделено такому моделированию узлов рам и стен, которые не искажали бы НДС изучаемых зон при местном приложении нагрузки, предельно упрощали бы исследование узлов сопряжения (статически определимые фрагменты узлов) и в то же время позволяли оценивать перераспределение усилий в статически неопределимых системах с учетом податливости узлов и реальной картины трещинообразования.</p></sec><sec><title>Результаты</title><p>Результаты. Выполнено обоснование принятых конструктивных решений опытных железобетонных конструкций узлов, разработаны программа и методика проведения исследований рассматриваемых типов узловых соединений рамных систем, которые дают возможность составить схему испытаний для экспериментального выявления особенности действительной работы указанного вида конструкций.</p></sec><sec><title>Выводы</title><p>Выводы. Разработаны программа и методика экспериментальных исследований по изучению особенностей трещино-образования, деформирования и разрушения узлов железобетонных рамных конструкций с учетом различного характера их НДС. Особое внимание уделено определению углов поворота, оценке деформативности и податливости узлов, а также прогибов, схем образования, развития и раскрытия трещин, деформированию бетона в сложно напряженных областях узлов железобетонных конструкций.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. In recent years, a number of experimental and a significant number of numerical studies have been conducted to study the resistance mechanisms of reinforced concrete building frames both under design loads and under emergency and special emergency impacts. The relevance of such studies is determined by both the need to assess the deformation anddestruction of such structural systems as a whole and by a fragmentary study of frame and wall units containing both pure bending zones and transverse bending zones in the presence and absence of longitudinal forces. The stress-strain state and the coordinates of the points of formation of spatial cracks in the structures of such fragments remain poorly understood, together with the unexplored effects that arise when the continuity of reinforced concrete is violated.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. When developing the volume of experimental studies, special attention was paid to such modelling of frame and wall nodes that would not distort the stress-strain state of the studied zones with local application of load, would simplify the study of mating nodes (statically determinate fragments of nodes) to the maximum and at the same time allow for the evaluation of the redistribution of forces in statically indeterminate systems taking into account the flexibility of nodes and the real picture of crack formation.</p></sec><sec><title>Results</title><p>Results. The justification of the adopted design solutions of experimental reinforced concrete structures of nodes was completed and a programme and methodology for conducting research on the considered types of nodal connections of frame systems was developed, which allows for the development of a test scheme for the experimental identification of the features of the actual operation of the specified type of structures.</p></sec><sec><title>Conclusions</title><p>Conclusions. A programme and methodology of experimental research were developed to study the characteristics of crack formation, deformation and destruction of reinforced concrete frame structures, taking into account the different nature of their stress-strain state. Particular attention is paid to determining rotation angles, assessing the deformability and flexibility of nodes, as well as deflections, patterns of formation, development and opening of cracks, as well as deformation of concrete in complex stressed areas of reinforced concrete structures.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>железобетонные конструкции</kwd><kwd>сложное напряженное состояние</kwd><kwd>углы поворота</kwd><kwd>прогибы</kwd><kwd>раскрытие пространственных трещин</kwd><kwd>экспериментальная проверка расчетной модели</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reinforced concrete structures</kwd><kwd>complex stress state</kwd><kwd>rotation angles</kwd><kwd>deflections</kwd><kwd>opening of spatial cracks</kwd><kwd>experimental verification of the calculation model</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">Федорова Н.В., Кореньков П.А. 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