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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">10.22227/2949-1622.2024.2.22-34</article-id><article-id custom-type="elpub" pub-id-type="custom">concconc-48</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>Усталостное поведение изгибаемых железобетонных балок при коррозии</article-title><trans-title-group xml:lang="en"><trans-title>Fatigue Behavior of Flexural Reinforced Concrete Beams under Corrosion Conditions</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, чл.-корр. РААСН, д-р техн. 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, Неad of the 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"><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>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>22</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тамразян А.Г., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тамразян А.Г.</copyright-holder><copyright-holder xml:lang="en">Tamrazyan A.G.</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/48">https://www.g-b-k.ru/jour/article/view/48</self-uri><abstract><p>Статья посвящена вопросам усталости изгибаемых железобетонных балок при коррозии арматуры. Рассматриваются влияние выступов и выемки арматуры периодического профиля в бетоне при повторяющихся нагрузках, которые действуют как концентраторы напряжений, что приводит к появлению усталостных трещин и к снижению усталостной прочности. Высота, ширина, угол подъема и радиус основания выступа влияют на величину концентрации напряжения и, следовательно, на усталостную прочность арматурных стержней. Представлена кривая циклических напряжений-деформаций (гистерезиса) для арматуры. После 7% -ной фактической потери массы наблюдается снижение усталостных характеристик балки. Поскольку это уменьшение совпадает с наблюдением питтинга, предполагается, что оно в основном из-за точечной коррозии. Предлагается деформационный подход к выносливости. Выведена зависимость между деформацией и сроком службы элемента. Показано, что коэффициент усталостной прочности стальной арматуры в балках увеличивается с увеличением глубины выемки, а контролирующим коэффициентом усталостной прочности балок является усталостная прочность стального стержня.</p></abstract><trans-abstract xml:lang="en"><p>The article is devoted to the fatigue of bending reinforced concrete beams under reinforcement corrosion. The influence of lugs and rebar notches periodic profile in concrete under repetitive loads, which act as stress concentrators, leading to the appearance of fatigue cracks and to the reduction of fatigue strength, is considered. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>усталостная прочность</kwd><kwd>срок службы</kwd><kwd>изгиб</kwd><kwd>железобетонные балки</kwd><kwd>коррозия</kwd><kwd>частота</kwd><kwd>гистерезис</kwd><kwd>выемка</kwd><kwd>выступы арматуры</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fatigue resistance</kwd><kwd>service life</kwd><kwd>bending</kwd><kwd>reinforced concrete beams</kwd><kwd>corrosion</kwd><kwd>frequency</kwd><kwd>hysteresis</kwd><kwd>hollowing</kwd><kwd>lugs of the 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">Hollaway L.C., Leeming M.B. 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