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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">izvestswsu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1560</issn><issn pub-type="epub">2686-6757</issn><publisher><publisher-name>ЮЗГУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1560-2024-28-2-37-55</article-id><article-id custom-type="elpub" pub-id-type="custom">izvestswsu-1262</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>Строительство</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Constructions</subject></subj-group></article-categories><title-group><article-title>Методика определения требуемого соотношения мембранных напряжений в тентовой оболочке арочного типа</article-title><trans-title-group xml:lang="en"><trans-title>Technique for obtaining the membrane stress ratio in a fabric arch-type shell</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3687-0510</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чесноков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chesnokov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чесноков Андрей Владимирович, кандидат технических наук, доцент, доцент кафедры строительного производства</p><p>ул. Московская, д. 30, г. Липецк 398055</p><p>Researcher ID: U-4758-2018</p><p>Author ID: 57170021900</p></bio><bio xml:lang="en"><p>Andrei V. Chesnokov, Cand. of Sci. (Engineering), Associate Professor, Associate Professor of the Building Production Departament</p><p>30, Moskovskaya str., Lipetsk 398055</p><p>Researcher ID: U-4758-2018</p><p>Author ID: 57170021900</p></bio><email xlink:type="simple">andreychess742@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/0000-0001-8274-9346</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михайлов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhailov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михайлов Виталий Витальевич, доктор технических наук, профессор, заведующий кафедрой строительного производства</p><p>ул. Московская, д. 30, г. Липецк 398055</p><p>Researcher ID: ISU-9851-2023</p><p>Author ID: 57215327886</p></bio><bio xml:lang="en"><p>Vitalii V. Mikhailov, Dr. of Sci. (Engineering), Professor, Head of the Building Production Departament</p><p>30, Moskovskaya str., Lipetsk 398055</p><p>Researcher ID: ISU-9851-2023</p><p>Author ID: 57215327886</p></bio><email xlink:type="simple">mmvv46@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Липецкий государственный технический университет</institution></aff><aff xml:lang="en"><institution>Lipetsk State Technical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2024</year></pub-date><volume>28</volume><issue>2</issue><fpage>37</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чесноков А.В., Михайлов В.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Чесноков А.В., Михайлов В.В.</copyright-holder><copyright-holder xml:lang="en">Chesnokov A.V., Mikhailov V.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://izvestswsu.elpub.ru/jour/article/view/1262">https://izvestswsu.elpub.ru/jour/article/view/1262</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Целью данной работы является разработка методики определения соотношения мембранных напряжений в тентовой оболочке, состоящей из множества секторов арочного типа, обеспечивающего требуемую высоту в центре сектора.</p></sec><sec><title>Методы</title><p>Методы. Для поиска требуемого соотношения мембранных напряжений применен итерационный метод хорд. Для определения высоты в центре сектора на каждой итерации производится поиск формы поверхности оболочки методом плотности сил, который заключается в определении координат узлов сети, наложенной на оболочку, путем решения системы уравнений равновесия, линеаризованной за счет введения подстановки, являющейся отношением усилий в элементах сети к их длинам.</p></sec><sec><title>Результаты</title><p>Результаты. Разработан итерационный алгоритм поиска соотношения мембранных напряжений, состоящий из двух этапов: определение начального диапазона поиска и минимизация расхождения требуемой и полученной по расчету высоты оболочки в центре сектора. Эффективность алгоритма подтверждена численным моделированием ряда секторов тентового покрытия арочного типа на прямоугольном плане. Расхождение заданных высот в центре секторов и высот, полученных в специализированном лицензионном программном комплексе, не превышает 1,0 %.</p></sec><sec><title>Заключение</title><p>Заключение. Форма поверхности тентовых оболочек зависит от мембранных напряжений. Задача поиска формы, в настоящее время, имеет достаточную степень теоретической проработки. Вместе с тем, обратная задача, позволяющая по заданным геометрическим параметрам оболочки найти искомое соотношение напряжений, не находит должного отражения в литературных источниках. Разработанная в настоящей работе методика будет способствовать упрощению процесса исследования и проектирования тентовых строительных конструкций. Дальнейшее развитие предложенной методики находится в области расчета многосекционных тентовых систем с учетом податливости опорных конструкций, разделяющих смежные секции.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of research</title><p>Purpose of research. The purpose of this work is to develop the technique for obtaining the membrane stress ratio in a fabric shell which consists of a number of arch-type sectors of given height at the center.</p></sec><sec><title>Methods</title><p>Methods. The iterative secant method is used for finding the membrane stress ratio. The height in the center of a sector is determined by means of the force density method at every iteration. The method includes applying a mesh on a shell surface and determining the nodal coordinates of the mesh via the solution of the set of equilibrium equations. The equations of the set are linearized by means of substitutions, which are the force to length ratios for the mesh elements.</p></sec><sec><title>Results</title><p>Results. The iterative technique for obtaining the membrane stress ratio has been developed. The technique consists of the following stages: initial search range determination and discrepancy minimization between the required and calculated heights at the center of the shell sector. The quality of the algorithm is confirmed by numerical simulating of a number of sectors of an arch-type fabric roof on a rectangular plan. The discrepancy between the specified heights in the center of the sectors and the heights obtained by the specialized licensed software package does not exceed 1.0%.</p></sec><sec><title>Conclusion</title><p>Conclusion. The surface shape of fabric shells depends on the membrane stresses. The shape-finding problem is well elaborated theoretically by now. Judging by the literature survey, however, the inverse problem of finding the membrane stress ratio given the geometrical parameters of the shell has not been developed yet. The proposed technique will facilitate research and development of fabric building constructions. Further development of the technique is in the field of multi-section fabric structural analysis with supporting structure compliance considered.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>тентовая оболочка</kwd><kwd>конструкция строительная тентовая</kwd><kwd>форма поверхности</kwd><kwd>мембранное напряжение</kwd><kwd>метод хорд</kwd><kwd>метод плотности сил</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fabric shell</kwd><kwd>fabric building structure</kwd><kwd>surface shape</kwd><kwd>membrane stress</kwd><kwd>secant method</kwd><kwd>force density method</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Analysis and design of fabric membrane structures: a systematic review on material and structural performance / J. Xu, Y. Zhang, Q. Yu, L. Zhang // Thin-Walled Structures. 2022. №. 170. 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