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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">10.22227/1997-0935.2023.10.1556-1562</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-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>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>Влияние податливости внутримодульных узлов на частоту собственных колебаний модульного здания</article-title><trans-title-group xml:lang="en"><trans-title>Influence of compliance of intramodular joints on the natural vibrations frequency of a modular building</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6285-8895</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Широков</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Shirokov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вячеслав Сергеевич Широков — старший преподаватель кафедры металлических и деревянных конструкций</p><p>443100, г. Самара, ул. Молодогвардейская, д. 244</p><p>РИНЦ ID: 665300, ResearcherID: N-5278-2016</p></bio><bio xml:lang="en"><p>Viacheslav S. Shirokov — senior lecturer of the Department of Metal and Wood Structures</p><p>244 Molodogvardeyskaya st., Samara, 443100</p><p>ID RSCI: 665300, ResearcherID: N-5278-2016</p></bio><email xlink:type="simple">ShirokovViacheslav@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный технический университет (СамГТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Technical University (SSTU)</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>10</month><year>2023</year></pub-date><volume>18</volume><issue>10</issue><fpage>1556</fpage><lpage>1562</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Широков В.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Широков В.С.</copyright-holder><copyright-holder xml:lang="en">Shirokov V.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://www.vestnikmgsu.ru/jour/article/view/82">https://www.vestnikmgsu.ru/jour/article/view/82</self-uri><abstract><sec><title>Введение</title><p>Введение. Внедрение модульных зданий приводит к необходимости развития методов их расчета, в том числе на динамические воздействия. Одним из основных параметров при вычислении нагрузок от динамических воздействий является установление частот собственных колебаний сооружения. Предмет исследования — собственная частота колебаний модульных зданий. Цель исследования — определение влияния податливости внутримодульных узлов на частоты колебаний модульных зданий.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Рассматривается вопрос выявления первой собственной частоты колебаний модульного здания с полужесткими внутримодульными узлами и влияния податливости узлов на частоту. Предложена и обоснована аналитическая формула определения собственных частот колебаний, учитывающая жесткостные параметры модульных зданий и податливость внутримодульных узлов. Предложенная формула имеет достаточную точность для инженерных расчетов. При этом она позволяет анализировать частоты колебаний модульных зданий с разными параметрами без построения расчетных схем в вычислительных комплексах, что значительно ускоряет поиск рациональных конструктивных решений.</p></sec><sec><title>Результаты</title><p>Результаты. Согласно полученным результатам, расхождение в значениях частот, вычисленных по методу конечных элементов и аналитически, для одноэтажного здания при разных соотношениях вращательных жесткостей узлов не превышает 1,5 %. При рассмотрении многоэтажного модульного здания разность определения собственных частот колебания возрастает с увеличением числа этажей, но не превышает 10 % для трех этажей.</p></sec><sec><title>Выводы</title><p>Выводы. На основе рассмотрения примера модульного здания показано, что необходимо учитывать податливость узлов для установления корректного значения собственных частот колебаний. Неучет вращательной жесткости узлов может привести к погрешности определения динамических воздействий.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The implementation of modular buildings leads to the necessity to develop methods of their calculation, including dynamic loads too. One of the main parameters in the calculation of loads from dynamic effects is the determination of natural frequencies of vibrations of the structure. The subject of research is the natural vibrational frequency of modular buildings. The aim of the research is to determine the effect of the compliance of intramodular joints on the vibrational frequencies of modular buildings.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The paper deals with the determination of the first natural frequency of vibration of a modular building with semi-rigid intramodular joints, and the influence of the compliance of the joints on the frequency. The author of the paper proposed and substantiated an analytical formula for determining the natural vibration frequencies, taking into account the stiffness parameters of modular buildings and the rigidity of intramodular joints. The proposed formula has sufficient accuracy for engineering calculations. At the same time, it allows to analyze the natural vibrational frequencies of modular buildings with different parameters without constructing calculation schemes in computer systems, which significantly speeds up the search for rational design solutions.</p></sec><sec><title>Results</title><p>Results. According to the obtained results, the discrepancy in the frequency values calculated by the finite element method and analytically for a one-story building with different ratios of the rotational stiffness of the joints does not exceed 1.5 %. For a multi-storey modular building, the difference in determining the natural vibration frequencies increases with the number of storeys, but does not exceed 10 % for three storeys.</p></sec><sec><title>Conclusions</title><p>Conclusions. Based on the example of a modular building, it is shown that it is necessary to take into account the joint rigidity to determine the correct value of natural vibrational frequencies. Ignoring of the rotational stiffness of the joints can lead to an error in determining the dynamic effects.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>модульные здания</kwd><kwd>собственная частота колебаний</kwd><kwd>динамические воздействия</kwd><kwd>податливые узлы</kwd><kwd>рамные узлы</kwd><kwd>вращательная жесткость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>modular buildings</kwd><kwd>natural vibration frequency</kwd><kwd>dynamic loads</kwd><kwd>semi-rigid joints</kwd><kwd>rigid joints</kwd><kwd>rotational stiffness</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">Широков В.С. Конструктивные особенности модульных зданий // Вестник евразийской науки. 2022. Т. 14. № 3. DOI: 10.15862/03SAVN322</mixed-citation><mixed-citation xml:lang="en">Shirokov V.S. Design features of modular buildings. The Eurasian Scientific Journal. 2022; 3. 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