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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">10.33979/2073-7416-2023-106-2-70-79</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-600</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 ИНЖЕНЕРНЫХ СООРУЖЕНИЙ. СТРОИТЕЛЬНЫЕ КОНСТРУКЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORY OF ENGINEERING STRUCTURES. BUILDING UNITS</subject></subj-group></article-categories><title-group><article-title>ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ КОНСТРУКЦИЙ С ПЕТЛЕВЫМИ СТЫКАМИ АРМАТУРЫ</article-title><trans-title-group xml:lang="en"><trans-title>NUMERICAL SIMULATION OF STRUCTURES WITH LOOP JOINTS OF REBAR</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>Мамин</surname><given-names>Александр Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Mamin</surname><given-names>Aleksandr N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук, профессор, начальник отдела обследований зданий и сооружений, АО «ЦНИИПромзданий»; профессор кафедры Железобетонные и каменные конструкции, Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</p><p>г. Москва</p></bio><bio xml:lang="en"><p>doctor of technical Sciences, Professor, Head of the Department of Surveys of Buildings and Structures, AO «CNIIPromzdanij»; professor of the Department of Reinforced Concrete and Stone Structures, Moscow State University of Civil Engineering (NIU MGSU)</p><p>Moscow</p></bio><email xlink:type="simple">otozs@yandex.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>Бамматов</surname><given-names>Арслан Асельдерович</given-names></name><name name-style="western" xml:lang="en"><surname>Bammatov</surname><given-names>Arslan As.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры Железобетонные и каменные конструкции</p><p>г. Москва</p></bio><bio xml:lang="en"><p>postgraduate student of the Department of Reinforced Concrete and Stone Structures</p><p>Moscow</p></bio><email xlink:type="simple">a.bammatof@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гордеев</surname><given-names>Никита Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Gordeev</surname><given-names>Nikita S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студент</p><p>г. Москва</p></bio><bio xml:lang="en"><p>student</p><p>Moscow</p></bio><email xlink:type="simple">gordey1999@list.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АО «ЦНИИПромзданий»; Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</institution></aff><aff xml:lang="en"><institution>AO «CNIIPromzdanij»; Moscow State University of Civil Engineering (NIU MGSU)</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</institution></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (NIU MGSU)</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>70</fpage><lpage>79</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мамин А.Н., Бамматов А.А., Гордеев Н.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Мамин А.Н., Бамматов А.А., Гордеев Н.С.</copyright-holder><copyright-holder xml:lang="en">Mamin A.N., Bammatov A.A., Gordeev N.S.</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/600">https://construction.elpub.ru/jour/article/view/600</self-uri><abstract><p>В  статье  описана  постановка  задачи  исследования  напряженнодеформированного  состояния  железобетонных  монолитных  конструкций  с  петлевыми стыками  арматуры  с  применением  метода  конечных  элементов.  Представлен  краткий  обзор модели пластического повреждаемого бетона concrete damaged plasticity, описание основных ее параметров и их подбора на примерен задачи верификации математической модели материала результатами  натурных  испытаний  бетонной  призмы  и  балки  с  петлевым  стыком  над статической нагрузкой.</p><p>Представлено подробное описание параметров модели, диаграмм состояния бетона и арматуры,  включая  графики  напряжения-деформации  с  учетом  особенностей  моделей,  а также даны графики сопоставления экспериментального и численного исследования бетонной призмы и изгибаемой железобетонной балки с петлевым стыком, включающей помимо модели бетона, и модель арматуры.</p><p>В  результате  расчетов  получены  максимальные  напряжения  в  арматуре  514  МПа, близкие  к  полученным  в  результате  натурного  эксперимента  550  МПа  (рисунок 8).  Величина прогиба при достижении разрушающей нагрузке в эксперименте составил 16.7 мм, в КЭ модели 18,07 мм.</p></abstract><trans-abstract xml:lang="en"><p>The article describes the statement of a problem of research of the stress-strain state of reinforced concrete monolithic structures with loop joints of rebar using the finite element method. A review of plastic damaged concrete model, a description of its basic parameters and their selection by the example of the problem of verification of mathematical material model by the results of full-scale tests of concrete prism and beam with a loop joint over a static load have been presented.</p><p>The detailed description of the model parameters, diagrams of concrete and reinforcement state, including stress-strain diagrams with regard to the models features, as well as graphs comparing the experimental and numerical research of a concrete prism and a bendable reinforced concrete beam with a loop joint, including a model of concrete, and reinforcement model are presented.</p><p>The results of numerical calculations obtained stresses in the reinforcement of 514 MPa, which is close to those resulting from the full-scale experiment of 550 MPa (Fig. 8). The value of deflection when the failure load in the experiment was 16.7 mm, in the FE model it was 18.07 mm.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>петлевой стык арматуры</kwd><kwd>concrete damaged plasticity</kwd><kwd>диаграмма деформирования бетона</kwd><kwd>испытания статической нагрузкой</kwd><kwd>бетонная призма</kwd><kwd>изгибаемая железобетонная балка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>loop joint of rebar</kwd><kwd>concrete damaged plasticity</kwd><kwd>concrete deformation diagram</kwd><kwd>static load tests</kwd><kwd>concrete prism</kwd><kwd>flexural reinforced concrete beam</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">Авдеев К.В., Мамин А.Н., Бамматов А.А. и др. Петлевые стыки стержневой арматуры. История развития, проблемы и актуальность // Строительство и реконструкция. 2022. № 6. 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