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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">21805</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2019-15-4-278-290</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Analysis and design of building structures</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Расчет и проектирование строительных конструкций</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Changes in the stressed state of the framework of the metal ribbed-ring dome during the assembly process</article-title><trans-title-group xml:lang="ru"><trans-title>Изменение напряженного состояния каркаса металлического ребристо-кольцевого купола в процессе монтажа</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lebed</surname><given-names>Evgeny V.</given-names></name><name xml:lang="ru"><surname>Лебедь</surname><given-names>Евгений Васильевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Science, Associate Professor, Department of Metal and Wooden Structures</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент, кафедра металлических и деревянных конструкций</p></bio><email>evglebed@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow State University of Civil Engineering (National Research University)</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Московский государственный строительный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2019</year></pub-date><volume>15</volume><issue>4</issue><issue-title xml:lang="en">VOL 15, NO4 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 15, №4 (2019)</issue-title><fpage>278</fpage><lpage>290</lpage><history><date date-type="received" iso-8601-date="2019-09-22"><day>22</day><month>09</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Lebed E.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Лебедь Е.В.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Lebed E.V.</copyright-holder><copyright-holder xml:lang="ru">Лебедь Е.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/21805">https://journals.rudn.ru/structural-mechanics/article/view/21805</self-uri><abstract xml:lang="en"><p>Aims of research. To analyze the stress state of the metal structures of the ribbedring dome of a hemispherical shape during the assembly process of the dome frame in two fundamentally different ways - “top-down” and “bottom-up”. Since different design schemes arise at different stages of assembly of the dome frame, different assembly forces result in their structural elements. To demonstrate how assembly forces lead to the tension state of a ribbed-ring dome that is transformed during the construction process. To perform the analysis of the stress states of the considered assembly methods and to present their evaluation. Methods. A computer model of a metal ribbed-ring dome made of steel I -beams with rigid joints has been developed. Several additional assembly models of an incomplete frame have been created for studying the considered assembly at different stages. Computer calculations for the effect of its self-weight were made for each assembly model of the dome frame. As a result of the calculations, the stresses in the structural elements of the frames of the assembly schemes were determined, which were compared with similar stresses resulting from the self-weight in the frame of the design scheme. Results. Diagrams of changes in the stress state of structural elements of a metal ribbed-ring dome are presented. The efficiency of use of steel strength at different stages of installation is also shown in the diagrams. A comparative assessment is given for the stress conditions due to the assembly methods under consideration. The inevitability of installation stresses is noted and the most efficient assembly method of installation is chosen.</p></abstract><trans-abstract xml:lang="ru"><p>Цели. Выполнить анализ напряженного состояния металлических конструкций ребристо-кольцевого купола полусферической формы при монтаже его каркаса двумя принципиально разными способами - подращиванием и наращиванием. Так как на разных этапах монтажа в купольном каркасе возникают разные расчетные схемы, то в их конструктивных элементах возникают разные монтажные усилия. Показать, как монтажные усилия приводят к преобразующемуся в процессе возведения напряженному состоянию каркаса ребристо-кольцевого купола. Выполнить анализ напряженных состояний рассматриваемых способов возведения металлического купольного каркаса и дать им оценку. Методы. Разработана компьютерная модель металлического ребристо-кольцевого купола из стальных двутавров с жесткими сопряжениями в узлах. Созданы несколько дополнительных монтажных моделей неполного каркаса для исследования рассматриваемых способов монтажа купола на разных этапах. Для каждой монтажной модели купольного каркаса выполнены компьютерные расчеты на действие собственного веса. В результате расчетов определены напряжения в конструктивных элементах каркасов монтажных схем, которые сравнивались с аналогичными напряжениями на действие собственного веса в каркасе проектной схемы. Результаты. Представлены графики изменения напряженного состояния конструктивных элементов каркаса металлического ребристо-кольцевого купола. Показаны диаграммы изменения степени использования прочности стали на разных этапах монтажа. Дана сравнительная оценка рассматриваемым монтажным напряженным состояниям. Отмечена неизбежность монтажных напряжений и выбран наиболее эффективный способ монтажа.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ribbed-ring dome</kwd><kwd>metal frame</kwd><kwd>structural scheme</kwd><kwd>methods of construction</kwd><kwd>assembly of structures</kwd><kwd>computer model</kwd><kwd>stresses in the elements</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ребристо-кольцевой купол</kwd><kwd>металлический каркас</kwd><kwd>конструктивное решение</kwd><kwd>способы возведения</kwd><kwd>монтаж конструкций</kwd><kwd>компьютерная модель</kwd><kwd>напряжения в элементах</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Tur V.I. (2004). Kupol’nye konstruktsyi: formoobrazovanie, raschet, konstruirovanie, povyshenie effektivnosti [Dome Structures: Morphogenesis, Analysis, Design, Increase in Effectiveness]. Moscow, ASV Publ., 96. 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