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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">53146</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2026-22-4-399-414</article-id><article-id pub-id-type="edn">LOPYUG</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">Methods of Reducing Stress in the Ribs of a Ribbed-Ring Dome in Case of an Accidental Situation</article-title><trans-title-group xml:lang="ru"><trans-title>Методы снижения напряжений в ребрах ребристо-кольцевого купола при возникновении аварийной ситуации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6588-6031</contrib-id><contrib-id contrib-id-type="spin">1369-7819</contrib-id><name-alternatives><name xml:lang="en"><surname>Golikov</surname><given-names>Alexander V.</given-names></name><name xml:lang="ru"><surname>Голиков</surname><given-names>Александр Владимирович</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Sciences, Senior Lecturer of the Department of Metal and Timber Structures</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры металлических и деревянных конструкций</p></bio><email>av.golikoff@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-9503-8822</contrib-id><contrib-id contrib-id-type="spin">5970-7718</contrib-id><name-alternatives><name xml:lang="en"><surname>Korenets</surname><given-names>Alexander M.</given-names></name><name xml:lang="ru"><surname>Коренец</surname><given-names>Александр Михайлович</given-names></name></name-alternatives><bio xml:lang="en"><p>Postgraduate student of the Department of Metal and Timber Structures</p></bio><bio xml:lang="ru"><p>аспирант кафедры металлических и деревянных конструкций</p></bio><email>korieniets@bk.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="2026-10-29" publication-format="electronic"><day>29</day><month>10</month><year>2026</year></pub-date><volume>22</volume><issue>4</issue><issue-title xml:lang="en">VOL 22, NO4 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 22, №4 (2025)</issue-title><fpage>399</fpage><lpage>414</lpage><history><date date-type="received" iso-8601-date="2026-10-29"><day>29</day><month>10</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Golikov A.V., Korenets A.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Голиков А.В., Коренец А.М.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Golikov A.V., Korenets A.M.</copyright-holder><copyright-holder xml:lang="ru">Голиков А.В., Коренец А.М.</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/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/53146">https://journals.rudn.ru/structural-mechanics/article/view/53146</self-uri><abstract xml:lang="en"><p>Through a review of Russian and international scientific literature, this study investigates potential methods for controlling stress distribution in various structural systems and evaluates their applicability to steel ribbed-ring domes in case of accidental situations involving the failure of a support node. Numerical simulations of the ribbed-ring dome were conducted across various problem settings to account for progressive collapse triggered by the localized failure of a supporting element. These simulations encompass linear static, nonlinear quasi-static, and nonlinear dynamic analyses. Based on the computational results, conclusions are drawn regarding the patterns of stress redistribution within the structural system and the subsequent collapse scenarios of the dome. Furthermore, a comparative analysis was performed on numerical models of the ribbed-ring dome with a damaged support node, alongside models incorporating various techniques for stress distribution control. The efficacy of these techniques in controlling the stress distribution in dome structures under accidental situations was rigorously evaluated. Finally, based on the numerical analysis and through a comparative evaluation of the stress distributions across different configurations equipped with force distribution control systems, a mechanism for the adaptive action of the dome roof system is proposed. This mechanism allows for a tolerable degree of localized damage while preserving the integrity of the load-bearing frame and preventing subsequent progressive collapse.</p></abstract><trans-abstract xml:lang="ru"><p>Путем анализа отечественных и зарубежных литературных источников исследованы возможные методы управлением распределения напряжений в различных конструкциях и рассмотрена возможность их применимости к стальным ребристо-кольцевым куполам при возникновении аварийной ситуации в опорном узле. Проведен расчет численных моделей ребристо-кольцевого купола в различных постановках задач с учетом прогрессирующего обрушения конструкции при повреждении опорного элемента: линейный статический, нелинейный квазистатический, нелинейный динамический. По данным расчета сделаны выводы о характере перераспределения напряжений в конструктивной системе и последующем сценарии обрушения конструкции купола. Проведен анализ численных моделей ребристо-кольцевого купола с поврежденным опорным узлом и моделей, в которых реализованы различные методы регулирования напряженно-деформированного состояния и дана оценка эффективности их использования для управления напряженно-деформированным состоянием в купольных конструкциях при возникновении аварийной ситуации. По результатам численного анализа путем сравнения напряженно-деформированных состояний разных схем с реализованными системами управления распределением усилий в системе предложен механизм регулируемой работы купольного покрытия с допустимой степенью разрушения, позволяющий сохранить несущий каркас и избежать дальнейшего прогрессирующего обрушения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>controlled structure</kwd><kwd>progressive collapse</kwd><kwd>controlled failure</kwd><kwd>prestressing</kwd><kwd>system unloading</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>управляемая конструкция</kwd><kwd>прогрессирующее обрушение</kwd><kwd>контролируемое разрушение</kwd><kwd>предварительное напряжение</kwd><kwd>разгрузка системы</kwd></kwd-group><funding-group/></article-meta><fn-group/></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Kolakkattil R, Tsavdaridis KD, Sanjeevi AJ. 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