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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">nsojout</journal-id><journal-title-group><journal-title xml:lang="ru">Строительство: наука и образование</journal-title><trans-title-group xml:lang="en"><trans-title>Construction: Science and Education</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2305-5502</issn><publisher><publisher-name>ФГБОУ ВО «Национальный исследовательский Московский государственный строительный университет»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/2305-5502.2024.4.39-56</article-id><article-id custom-type="elpub" pub-id-type="custom">nsojout-211</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>Строительные конструкции. Основания и фундаменты. Технология и организация строительства. Проектирование зданий и сооружений. Инженерные изыскания и обследование зданий</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Building structures. Soils and foundations. Technology and organization of construction. Designing of buildings and constructions. Engineering survey and inspection of buildings</subject></subj-group></article-categories><title-group><article-title>Влияние податливости узлов покрытий заглубленных сооружений на предельное значение ударной нагрузки</article-title><trans-title-group xml:lang="en"><trans-title>Influence of ductility of buried pavement nodes of structures at the impact limit value</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>Парфенов</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Parfenov</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Григорьевич Парфенов — кандидат технических наук, доцент, заведующий кафедрой строительных конструкций</p><p>241037, г. Брянск, пр-т Станке Димитрова, д. 3</p></bio><bio xml:lang="en"><p>Sergey G. Parfenov — Candidate of Technical Sciences, Associate Professor, Head of the Department of Building Structures</p><p>3 Stanke Dimitrova avenue, Bryansk, 241037</p></bio><email xlink:type="simple">parfenovsk@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4765-5819</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексейцев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseytsev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анатолий Викторович Алексейцев — доктор технических наук, доцент, профессор кафедры промышленного и гражданского строительства, доцент кафедры железобетонных и каменных конструкций</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 57191530761, ResearcherID: I-3663-2017</p></bio><bio xml:lang="en"><p>Anatoly V. Alekseytsev — Doctor of Technical Sciences, Associate Professor, Professor of the Department of Industrial and Civil Engineering, Associate Professor of the Department of Reinforced Concrete and Masonry Structures</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 57191530761, ResearcherID: I-3663-2017</p></bio><email xlink:type="simple">AlekseytsevAV@mgsu.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>Липина</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Lipina</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арина Брониславовна Липина — студентка</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Arina B. Lipina — student</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">lab.1508@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>Бацан</surname><given-names>С. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Batsan</surname><given-names>S. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>София Романовна Бацан — студентка</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Sofia R. Batsan — student</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">batsan2002@mail.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>Мелихов</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Melihov</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорий Викторович Мелихов — аспирант кафедры строительных конструкций</p><p>241037, г. Брянск, пр-т Станке Димитрова, д. 3</p></bio><bio xml:lang="en"><p>Grigory V. Melihov — postgraduate student of the Department of Building Structures</p><p>3 Stanke Dimitrova avenue, Bryansk, 241037</p></bio><email xlink:type="simple">MelihovT.N@mail.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>Бибиков</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bibikov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Владимирович Бибиков — аспирант кафедры строительных конструкций</p><p>241037, г. Брянск, пр-т Станке Димитрова, д. 3</p></bio><bio xml:lang="en"><p>Mikhail V. Bibikov — postgraduate student of the Department of Building Structures</p><p>3 Stanke Dimitrova avenue, Bryansk, 241037</p></bio><email xlink:type="simple">best.builder@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Брянский государственный инженерно-технологический университет (БГИТУ)<country>Россия</country></aff><aff xml:lang="en">Bryansk State Technological University of Engineering (BSTUE)<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><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>2024</year></pub-date><pub-date pub-type="epub"><day>27</day><month>12</month><year>2024</year></pub-date><volume>14</volume><issue>4</issue><fpage>39</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Парфенов С.Г., Алексейцев А.В., Липина А.Б., Бацан С.Р., Мелихов Г.В., Бибиков М.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Парфенов С.Г., Алексейцев А.В., Липина А.Б., Бацан С.Р., Мелихов Г.В., Бибиков М.В.</copyright-holder><copyright-holder xml:lang="en">Parfenov S.G., Alekseytsev A.V., Lipina A.B., Batsan S.R., Melihov G.V., Bibikov M.V.</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.nso-journal.ru/jour/article/view/211">https://www.nso-journal.ru/jour/article/view/211</self-uri><abstract><sec><title>Введение</title><p>Введение. Выполнен литературный обзор работ в области динамического расчета композитных конструкций, который показал, что исследования в области демпфирования динамических воздействий на покрытия заглубленных сооружений являются актуальными. При этом вопросы несимметричных импульсных воздействий остаются недостаточно проработанными.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Рассматривается типовое конструктивное решение плиты покрытия заглубленного в грунт сооружения, на которое действует импульсная нагрузка. Моделирование деформаций осуществляется в объемной постановке методом конечных элементов. Динамическое воздействие представлено в виде совокупности масштабированных временных функций. Такой способ моделирования позволяет учитывать переменное пятно удара и изменение интенсивности ударного воздействия. Учитывается физическая нелинейность материалов на основе моделей пластичности фибробетона и арматуры. Для установления начального импульса нагрузки использовалась модель JWL.</p></sec><sec><title>Результаты</title><p>Результаты. Определены предельные значения динамической нагрузки, соответствующей состоянию предразрушения конструкции. При этом варьировалась толщина труб, используемых в опорных узлах в качестве демпфирующих вставок. Проведен ряд расчетов с различными толщинами демпфирующих (сминаемых) вставок при несимметричном импульсном воздействии. В качестве наблюдаемых во времени параметров при симметричном армировании ригельных частей плиты рассматривались эквивалентные по энергетической теории прочности напряжения. Выполнено сопоставление с ранее проведенными исследованиями, посвященными расчету плиты на симметричные воздействия.</p></sec><sec><title>Выводы</title><p>Выводы. Установлена высокая эффективность применения демпфирующих вставок, при этом наибольшее значение предельной динамической нагрузки по сравнению с жестким узлом опирания и с цельной трубой удалось получить при толщине вставок, равной 9 мм. Определены перспективы и дальнейшие направления исследований.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The literature review of research in the field of dynamic calculation of composite structures is carried out, which shows that research in the field of damping of dynamic impacts on coatings of buried structures is actual. At the same time, the issues of asymmetric impulse impacts remain insufficiently studied.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A typical structural solution of a pavement slab of a buried structure subjected to impulse loading is considered. The deformation is modelled in the volumetric formulation by the finite element method. The dynamic effect is represented as a set of scaled time functions. This type of modelling allows the variable impact point and the change in impact intensity to be taken into account. The physical non-linearity of the materials is taken into account based on plasticity models of the fibre concrete and reinforcement. The JWL model was used to determine the initial load moment.</p></sec><sec><title>Results</title><p>Results. Limits of dynamic load corresponding to the pre-failure state of the structure were determined. The thickness of the pipes used as damping inserts in the support nodes was varied. A series of calculations were carried out with different thicknesses of damping (crumpled) inserts under asymmetric impulse loading. The equivalent stresses according to the energy theory of strength were considered as time-observed parameters for symmetrical reinforcement of the transom parts of the slab. A comparison was made with previous studies dedicated to the calculation of the slab for symmetrical impacts.</p></sec><sec><title>Conclusions</title><p>Conclusions. The high efficiency of the use of damping inserts was established, and the highest value of the dynamic ultimate load in comparison with a rigid bearing unit and a solid pipe was obtained with the thickness of the inserts equal to 9 mm. Prospects and further research directions are defined.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>динамическая нагрузка</kwd><kwd>плита покрытия</kwd><kwd>демпферы</kwd><kwd>сталефиброжелезобетон</kwd><kwd>заглубленные сооружения</kwd><kwd>деформации во времени</kwd><kwd>импульсное воздействие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dynamic loading</kwd><kwd>pavement slab</kwd><kwd>dampers</kwd><kwd>steel fibre reinforced concrete</kwd><kwd>buried structures</kwd><kwd>time deformation</kwd><kwd>impulse impact</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Авторы благодарят организаторов Международного научно-практического симпозиума «Будущее строительной отрасли: вызовы и перспективы развития» 2024 и рецензентов за возможность представления и обсуждения исследования.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The authors would like to thank the organizers of the International Scientific and Practical Symposium “The Future of the Construction Industry: Challenges and Development Prospects” 2024 and the reviewers for the opportunity to present and discuss the research.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Mkrtychev O., Savenkov A. 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