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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">23595</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2020-16-2-111-121</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">Stress state of metal dome meridional ribs at different stages of overhang erection process</article-title><trans-title-group xml:lang="ru"><trans-title>Напряженное состояние меридиональных ребер металлического купола на разных этапах навесного 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 кафедры металлических и деревянных конструкций</p></bio><email>evglebed@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vershinin</surname><given-names>Vladimir P.</given-names></name><name xml:lang="ru"><surname>Вершинин</surname><given-names>Владимир Петрович</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Sciences, Associate Professor, Department of Metal and Wooden Structures</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры 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="2020-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2020</year></pub-date><volume>16</volume><issue>2</issue><issue-title xml:lang="en">VOL 16, NO2 (2020)</issue-title><issue-title xml:lang="ru">ТОМ 16, №2 (2020)</issue-title><fpage>111</fpage><lpage>121</lpage><history><date date-type="received" iso-8601-date="2020-04-29"><day>29</day><month>04</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Lebed E.V., Vershinin V.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Лебедь Е.В., Вершинин В.П.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Lebed E.V., Vershinin V.P.</copyright-holder><copyright-holder xml:lang="ru">Лебедь Е.В., Вершинин В.П.</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/23595">https://journals.rudn.ru/structural-mechanics/article/view/23595</self-uri><abstract xml:lang="en"><p>Research aim. The aim of the present research was an analysis of a metal ribbed ring-shaped dome metallic ribs stress state at different stages of a skeleton overhang erection process. The considered dome is hemispherical and is assembled bottom-up of individual elements. Due to a varying slope of meridional ribs elements at different relative elevations their stress state changes during mounting. The effect of the overhang erection process onto the stress state of the metal dome meridional ribs has been investigated. The relationship between the stress state of a meridional rib and mounting of each next dome skeleton tier has been established. Methods. A mathematical model of the metal ribbed ring-shaped dome assembled of steel H-shaped elements with rigid connections has been developed. Several extra models corresponding to different skeleton erection stages have been also generated to determine stresses in the meridional ribs at these stages. Response of each dome mathematical model under dead-weight load has been simulated. The obtained values of stresses in the meridional ribs within different models have been compared with corresponding design stresses values. Results. The dependence of the metal dome meridional rib stress state onto the stages of overhang erection process has been plotted. A degree of utilization of ribs steel strength at different erection stages has been represented by diagrams. An estimation of the dome skeleton stress state during overhang erection has been given. Imminence of assembly stresses during overhang erection and their influence onto dome structural reliability has been pointed out.</p></abstract><trans-abstract xml:lang="ru"><p>Цель. Выполнить анализ напряженного состояния меридиональных ребер металлического ребристо-кольцевого купола на разных стадиях навесного монтажа его каркаса. Купол имеет полусферическую форму и собирается из отдельных элементов от опорного контура к вершине. Из-за разного наклона элементов меридиональных ребер на разных ярусах в процессе монтажа изменяется их напряженное состояние. Выяснялось, как навесной монтаж металлического купола отражается на напряженном состоянии его меридиональных ребер. Задачей исследования являлось установление закономерности изменения напряженного состояния меридионального ребра с монтажом каждого вышерасположенного яруса купольного каркаса. 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 напряжений в ребрах купола на разных стадиях навесного монтажа. Для каждой монтажной модели купольного каркаса выполнены компьютерные расчеты на действие собственного веса. В результате расчетов определены напряжения в меридиональных ребрах каркаса монтажных схем, которые сравнивались с аналогичными напряжениями в каркасе проектной схемы. Результаты. Представлены графики изменения напряженного состояния меридионального ребра металлического купола по стадиям навесного монтажа. Показаны диаграммы изменения степени использования прочности стали на разных стадиях монтажа. Дана оценка напряженным состояниям при навесном монтаже купольного каркаса. Отмечены неизбежность монтажных напряжений при навесном монтаже и их влияние на надежность купола.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ribbed ring-shaped dome</kwd><kwd>metal skeleton</kwd><kwd>overhang erection</kwd><kwd>stress state</kwd><kwd>mathematical model</kwd><kwd>stresses in ribs</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ребристо-кольцевой купол</kwd><kwd>металлический каркас</kwd><kwd>навесной монтаж</kwd><kwd>напряженное состояние</kwd><kwd>компьютерная модель</kwd><kwd>напряжения в ребрах</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. Kupol’nye konstruktsyi: formoobrazovanie, raschet, konstruirovanie, povyshenie effektivnosti [Dome Structures: Morphogenesis, Analysis, Design, Increase in Effectiveness]. Moscow, ASV Publ.; 2004. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Тур В.И. 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