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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">10.22227/1997-0935.2023.11.1763-1779</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-112</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>Экспериментальные исследования влияния зазоров во фланцевых соединениях на напряженно-деформированное состояние узла</article-title><trans-title-group xml:lang="en"><trans-title>Influence of gaps in flange joints on the stress-strain state of the unit</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9997-9436</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Туснин</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Tusnin</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Романович Туснин — доктор технических наук, доцент, заведующий кафедрой металлических и деревянных конструкций, директор института Промышленного и гражданского строительства</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ ID: 455914, Scopus: 6507367654</p></bio><bio xml:lang="en"><p>Alexander R. Tusnin — Doctor of Technical Sciences, Associate Professor, Head of the Department of Metal and Wooden Structures, Director of the Institute of Industrial and Civil Engineering</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>ID RSCI: 455914, Scopus: 6507367654</p></bio><email xlink:type="simple">TusninAR@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>Платонова</surname><given-names>В. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Platonova</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерия Дмитриевна Платонова — аспирант кафедры металлических и деревянных конструкций</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Valeria D. Platonova — postgraduate student of the Department of Metal and Wooden Structures</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">platonovaleria@yandex.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>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>11</month><year>2023</year></pub-date><volume>18</volume><issue>11</issue><fpage>1763</fpage><lpage>1779</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Туснин А.Р., Платонова В.Д., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Туснин А.Р., Платонова В.Д.</copyright-holder><copyright-holder xml:lang="en">Tusnin A.R., Platonova V.D.</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/112">https://www.vestnikmgsu.ru/jour/article/view/112</self-uri><abstract><sec><title>Введение</title><p>Введение. Для решения инженерных задач интерес представляет вопрос действительной работы каркаса здания в целом с учетом особенностей работы узлов, соединяющих несущие элементы. Предлагается исследовать влияние начальных зазоров во фланцевых соединениях типа «балка – колонна» на прочностные и деформативные характеристики узлового решения. Особое внимание уделяется работе высокопрочных болтов с предварительным натяжением в режиме работы «растяжение с изгибом». Предложена конфигурация экспериментальной модели, выбран способ фиксации величины напряжений в болтах в трех точках, что позволяет учитывать напряжения не только от растяжения болта, но и от его изгиба.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Выполнен литературный обзор темы влияния начальных несовершенств во фланцевых соединениях, рассмотрен вопрос недостатков существующих подходов к аналитическому расчету узлов на основе российских и зарубежных нормативных документов. Описаны экспериментальная установка и опытные образцы, приведены рекомендации по проведению экспериментальных исследований фрагмента рамы с двумя типами узлов. Установка и образцы разработаны на основе результатов численного расчета конечно-элементных моделей.</p></sec><sec><title>Результаты</title><p>Результаты. Проведены испытание шпильки с заявленным классом прочности 8.8 для определения ее фактических механических характеристик, испытание на растяжение шпильки с прорезями для оценки достоверности данных тензометрических измерений и корректировки конструкции экспериментальных образцов с учетом результатов испытаний, испытание узловых решений двух видов конфигураций, обработка и аналитика результатов испытаний.</p></sec><sec><title>Выводы</title><p>Выводы. Обоснована методология выполнения эксперимента по тематике исследования, определен характер влияния формируемого зазора на напряжения в элементах узла.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. For the solution of engineering problems, the question of the actual operation of the building frame as a whole, taking into account the peculiarities of the operation of the joints connecting the load-bearing elements, is of interest. It is proposed to investigate the influence of initial gaps in flange “beam – column” type connections on strength and deformation characteristics of the joint solution. Special attention is paid to the operation of high-strength bolts with pretensioning in the “tension-bending” mode of operation. In this article, the configuration of the experimental model is proposed, the method of fixing the value of stresses in bolts at three points is chosen, which makes it possible to take into account stresses not only along the axis, but also in the plane of the cross-section of the bolt.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A literature review of the subject of the influence of initial imperfections in flange joints is carried out, the question of disadvantages of existing approaches to the analytical calculation of assemblies on the basis of Russian and foreign normative documents is considered. Experimental installation and prototypes are described, recommendations for experimental studies of a frame fragment with two types of joints are given. The installation and prototypes are developed on the basis of the results of numerical calculation of finite element models.</p></sec><sec><title>Results</title><p>Results. A test of a stud with the declared strength class 8.8 to determine its actual mechanical characteristics, a tensile test of a stud with slots to assess the reliability of strain gauge data and adjust the design of experimental specimens taking into account the test results, testing of joint solutions of two types of configurations, processing and analyzing the test results were carried out.</p></sec><sec><title>Conclusions</title><p>Conclusions. The methodology of experiment execution on the research subject is substantiated, the character of the influence of the formed gap on the stresses in the elements of the joint is determined.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>фланцевые соединения балки и колонны</kwd><kwd>работа фрикционного соединения при наличии зазоров</kwd></kwd-group><kwd-group xml:lang="en"><kwd>beam-column flange joints</kwd><kwd>friction joint operation in the presence of gaps</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта НИУ МГСУ. Приказ 453/130 от 15.05.2023 «О реализации проектов, поддержанных по результатам конкурса 2023 года на проведение фундаментальных и прикладных научных исследований (НИР) научными коллективами НИУ МГСУ».</funding-statement><funding-statement xml:lang="en">The study was supported by a grant from NRU MGSU. 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