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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">52523</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2026-22-3-267-282</article-id><article-id pub-id-type="edn">LJBKAD</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">Influence of the Level of Detail of the Computational Model on the Stress State of a Guyed Mast</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние степени детализации расчетной модели на напряженно-деформированное состояние антенно-мачтового сооружения</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-7167-0652</contrib-id><contrib-id contrib-id-type="spin">4203-4240</contrib-id><name-alternatives><name xml:lang="en"><surname>Markina</surname><given-names>Yulia D.</given-names></name><name xml:lang="ru"><surname>Маркина</surname><given-names>Юлия Дмитриевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Sciences, Associate Professor at the Department of Theory of Structures and Technical Mechanics, Faculty of Civil Engineering</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры теории сооружений и технической механики, Инженерно-строительный факультет</p></bio><email>poluektoff@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Nizhny Novgorod State University of Architecture and Civil Engineering</institution></aff><aff><institution xml:lang="ru">Нижегородский государственный архитектурно-строительный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-09-30" publication-format="electronic"><day>30</day><month>09</month><year>2026</year></pub-date><volume>22</volume><issue>3</issue><issue-title xml:lang="en">VOL 22, NO2 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 22, №2 (2025)</issue-title><fpage>267</fpage><lpage>282</lpage><history><date date-type="received" iso-8601-date="2026-09-30"><day>30</day><month>09</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Markina Y.D.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Маркина Ю.Д.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Markina Y.D.</copyright-holder><copyright-holder xml:lang="ru">Маркина Ю.Д.</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/52523">https://journals.rudn.ru/structural-mechanics/article/view/52523</self-uri><abstract xml:lang="en"><p>Guyed masts are widely used for telecommunication equipment installation. In the structural analysis of such structures, the composition of the computational model and the method of incorporating structural elements, including service platforms, may significantly influence the calculation results. The analysis becomes more complicated for masts with pronounced geometric asymmetry caused by the one-sided arrangement of service platforms. The aim of this study is to investigate the influence of different methods of modeling service platforms on the stress state and dynamic characteristics of a guyed mast. Numerical analysis was performed using the finite element method in the SCAD Office software. Three computational models were considered: with explicit modeling of platforms, with equivalent loads from platforms, and without considering the platforms. In addition, mast structures with similar asymmetrical arrangement of the platforms are analyzed. A comparative analysis of axial forces, bending moments along the mast height, horizontal displacements, and natural vibration frequencies was carried out. The results show that the method of platform modeling has a minor effect on axial forces, but significantly influences bending moments and horizontal displacements of the upper part of the mast, where the platforms are located. For some parameters, the difference between models reaches 20-22%. The results demonstrate the importance of proper consideration of asymmetrically arranged platforms in the structural analysis of guyed masts.</p></abstract><trans-abstract xml:lang="ru"><p>Антенно-мачтовые сооружения широко применяются для размещения телекоммуникационного оборудования. При проектировании таких сооружений существенное влияние на результаты расчета может оказывать состав расчетной модели и способ учета конструктивных элементов, в частности рабочих площадок. Особую сложность представляет анализ конструкций с выраженной геометрической асимметрией. Цель исследования - изучение влияния способа учета рабочих площадок на напряженно-деформированное состояние и динамические характеристики антенно-мачтового сооружения, а также оценка области применимости упрощенной расчетной модели. Численное моделирование выполнено методом конечных элементов в программном комплексе SCAD Office. Рассмотрены три расчетные модели мачты, различающиеся способом учета рабочих площадок: с явным моделированием площадок, с учетом нагрузок от площадок и без учета площадок. Дополнительно проанализированы башенные сооружения со сходным асимметричным расположением площадок. Выполнен сравнительный анализ распределения продольных усилий и изгибающих моментов по высоте мачты, горизонтальных перемещений, а также частот и форм собственных колебаний конструкции. Показано, что способ моделирования площадок в наименьшей степени влияет на продольные усилия у основания и нагрузки на фундамент, однако оказывает существенное влияние на изгибающие моменты и перемещения верхней части сооружения, где расположены площадки. Для отдельных параметров расхождение между моделями превышает 20 %. Полученные результаты подтверждают необходимость корректного учета асимметрично расположенных площадок при расчете антенно-мачтовых сооружений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>guyed mast</kwd><kwd>numerical modeling</kwd><kwd>finite element method</kwd><kwd>dynamic characteristics</kwd><kwd>wind load</kwd><kwd>structural asymmetry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>антенно-мачтовое сооружение</kwd><kwd>численное моделирование</kwd><kwd>метод конечных элементов</kwd><kwd>динамические характеристики</kwd><kwd>ветровая нагрузка</kwd><kwd>асимметрия конструкции</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">He B, Zhao M, Feng W, Xiu Y, Wang Y, Feng L, Qin Y, Wang C. A method for analyzing stability of tower-line system under strong winds. 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