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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">10.22227/2949-1622.2025.4.5-17</article-id><article-id custom-type="elpub" pub-id-type="custom">concconc-82</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>Влияние перераспределения моментов на несущую способность  изгибаемых железобетонных элементов при повреждении напрягаемой  арматуры вследствие коррозии</article-title><trans-title-group xml:lang="en"><trans-title>Influence of Redistribution of Moments on the Load-Bearing Capacity  of Bending Reinforced Concrete Elements in Case of Damage  to the Pressured Reinforcement due to Corrosion</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0569-4788</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тамразян</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Tamrazyan</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ашот Георгиевич Тамразян, член-корреспондент РААСН, доктор технических наук, профессор, заведующий кафедрой железобетонных и каменных конструкций</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 55975413900, ResearcherID: T-1253-2017</p></bio><bio xml:lang="en"><p>Ashot G. Tamrazyan, Corresponding Member of RAACS, Doctor of Technical Sciences, Professor, Head of Department of Reinforced Concrete and Masonry Structures</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 55975413900, ResearcherID: T-1253-2017</p></bio><email xlink:type="simple">Tamrazian@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 (НИУ МГСУ)<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>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2025</year></pub-date><volume>12</volume><issue>4</issue><fpage>5</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тамразян А.Г., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Тамразян А.Г.</copyright-holder><copyright-holder xml:lang="en">Tamrazyan A.G.</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/82">https://www.g-b-k.ru/jour/article/view/82</self-uri><abstract><p>Одной из основных целей в области строительства зданий является проектирование будущих железобетонных конструкций, устойчивых к непредвиденным нагрузкам. Другими словами, конструкция должна быть спроектирована так, чтобы работать надежно и безопасно. Двумя важнейшими критериями оценки надежности являются пластичность конструкции и принцип «растрескивания перед разрушением». Рассматриваются известные случаи коррозионных повреждений предварительно напряженного бетона. Предлагается определить остаточную несущую способность и коэффициент запаса прочности поперечного сечения предварительно напряженной железобетонной балки, используя площадь остаточной напрягаемой арматуры вследствие коррозионного повреждения. Рассмотрены два случая перераспределения моментов: от пролета к опоре, когда потеря происходит в пролете, и от опоры к пролету, когда потеря происходит на опоре. Для обеспечения прочности железобетонной балки для статически определимых и неопределимых систем предлагается определить минимальное армирование, исходя из их способности к пластическому повороту при потере напрягаемой арматуры.</p></abstract><trans-abstract xml:lang="en"><p>One of the main goals in building construction is to design future reinforced concrete structures that are resistant to unexpected loads. In other words, the structure must be designed to operate reliably and safely. Two key reliability assessment criteria are the ductility of the structure and the “cracking before failure” principle. Known cases of corrosion damage to prestressed concrete are considered. It is proposed to determine the residual load-bearing capacity and safety factor of the cross-section of a prestressed concrete beam using the area of residual prestressed reinforcement due to corrosion damage. Two cases of moment redistribution are considered: from span to support, when the loss occurs in the span, and from support to span, when the loss occurs at the support. To ensure the strength of reinforced concrete beams for statically determinate and indeterminate systems, it is proposed to determine the minimum reinforcement based on their ability to plastically rotate upon loss of prestressed reinforcement.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>статически неопределимые железобетонные балки</kwd><kwd>перераспределение моментов</kwd><kwd>пластический поворот</kwd><kwd>повреждение напрягаемой арматуры</kwd><kwd>несущая способность</kwd><kwd>остаточный коэффициент запаса прочности</kwd><kwd>минимальное армирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>statically indeterminate reinforced concrete beams</kwd><kwd>moment redistribution</kwd><kwd>plastic rotation</kwd><kwd>damage to prestressed reinforcement</kwd><kwd>load-bearing capacity</kwd><kwd>residual safety factor</kwd><kwd>minimum reinforcement</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">Мацеевич Т.А., Андреев И.Ф. 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