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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">vestniktgasu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Томского государственного архитектурно-строительного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-1859</issn><issn pub-type="epub">2310-0044</issn><publisher><publisher-name>Tomsk State University of Architecture and Building</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31675/1607-1859-2024-26-3-118-133</article-id><article-id custom-type="elpub" pub-id-type="custom">vestniktgasu-1681</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>СТРОИТЕЛЬНЫЕ КОНСТРУКЦИИ, ЗДАНИЯ И СООРУЖЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BUILDING AND CONSTRUCTION</subject></subj-group></article-categories><title-group><article-title>Анализ работы под нагрузкой двухпоясных вантовых ферм</article-title><trans-title-group xml:lang="en"><trans-title>Structural analysis of loaded cable trusses</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, канд. техн. наук, доцент</p><p>398055, г. Липецк, ул. Московская, 30</p></bio><bio xml:lang="en"><p>Andrei V. Chesnokov, PhD, A/Professor</p><p>30, Moskovskaya Str., 398055, Lipetsk</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, докт. техн. наук, профессор</p><p>398055, г. Липецк, ул. Московская, 30</p></bio><bio xml:lang="en"><p>Vitalii V. Mikhailov, DSc, Professor</p><p>30, Moskovskaya Str., 398055, Lipetsk</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><country>Россия</country></aff><aff xml:lang="en"><institution>Lipetsk state technical university</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>13</day><month>06</month><year>2024</year></pub-date><volume>26</volume><issue>3</issue><fpage>118</fpage><lpage>133</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://vestnik.tsuab.ru/jour/article/view/1681">https://vestnik.tsuab.ru/jour/article/view/1681</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Вантовые фермы обладают рядом преимуществ по сравнению с конструкциями из бетона и стали, широко применяемыми в покрытиях зданий и сооружений. Они позволяют перекрыть пролеты до 60 м и более, обладают малым собственным весом и не требуют использования монтажной техники большой грузоподъемности. Вместе с тем разработка проектных решений вантовых конструкций затруднена из-за отсутствия в имеющихся программных комплексах конечно-элементного анализа специализированных инструментов для выполнения вариантной проработки. Аналитические методы расчета вантовых конструкций требуют интегрирования эпюр поперечных сил в фиктивной балке и решения систем нелинейных уравнений, что осложняет выполнение статического анализа. Таким образом, разработка упрощенных полуаналитических методов расчета, реализуемых в общедоступных математических программных комплексах, является важной и актуальной задачей, позволяющей повысить качество проектных решений за счет использования встроенных инструментов численного моделирования и оптимизации.</p><p>Цель настоящей работы – разработка усовершенствованной методики статического анализа двухпоясных вантовых ферм.</p><p>Методы исследования и результаты. В основе разработанной методики лежит разложение функции формы вантового пояса и внешней нагрузки в тригонометрические ряды. С учетом условия совместности деформаций поясов, вытекающего из предположения о неизменности длин связей между ними, а также предположения о малости вертикального перемещения фермы в центре пролета, получена система двух уравнений. Одно из них является квадратным и имеет известное решение при заданном коэффициенте изменения формы вантовой фермы, который определяется из второго уравнения методом хорд.</p></sec><sec><title>Выводы</title><p>Выводы. Предложенная расчетная методика позволяет определить вертикальные перемещения вантовой фермы, контактную нагрузку между поясами и усилия в поясах при действии внешней нагрузки, равномерно загружающей левую и правую половины пролета. Применение метода одномерного поиска для решения системы нелинейных уравнений требует меньших вычислительных ресурсов по сравнению с общим случаем решения нелинейных систем.</p></sec></abstract><trans-abstract xml:lang="en"><p>Cable trusses are far superior to ordinary roof structures of buildings made of steel or reinforced concrete. They are applicable for spans up to 60 meters or more and do not need heavy-duty installation equipment due to their low weight. On the other hand, design solutions for cable structures are hampered because software packages for the finite element analysis, are not intended for study of alternative solutions. Evaluation methods for the cable truss structure include integration of the shear force distribution in auxiliary beam and solution of a set of non-linear equations. It complicates the implementation of static analysis. The development of simplified evaluation methods suitable for general-purpose mathematical software packages, is an important task to be solved. It will enhance the quality of design solutions via specialized tools for numerical simulation and optimization.</p><sec><title>Purpose</title><p>Purpose: The purpose of the work is to develop evaluation methods of cable trusses.</p></sec><sec><title>Methodology</title><p>Methodology: The proposed technique is based on the sine-series expansion of the external load and shape function of the cable truss. The assumption of small relative displacement at the center of the truss span and constant length of links between the chords yield a set of two equations. The first one is quadratic. Its solution is given in terms of the cable truss shape alteration determined from the second equation by means of the secant method.</p></sec><sec><title>Research findings</title><p>Research findings: The proposed technique allows to determine vertical displacements of the cable truss, the link load between the chords and axial forces under the external load uniformly distributed over left and right parts of the span. Nonlinear equations solved by the plane solution technique, requires much less computations in contrast to the general analysis of nonlinear systems.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>вантовая конструкция</kwd><kwd>вантовая ферма</kwd><kwd>пологая ванта</kwd><kwd>гибкая нить</kwd><kwd>обратно-симметричная нагрузка</kwd><kwd>деформация</kwd><kwd>тригонометрический ряд</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cable truss</kwd><kwd>shallow cable</kwd><kwd>flexible cable</kwd><kwd>antisymmetric load</kwd><kwd>deformation</kwd><kwd>trigonometric sequence</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">Еремеев П.Г. Висячие конструкции // Строительные материалы. 2022. № 10. С. 62–67. DOI: 10.31659/0585-430X-2022-807-10-62-67</mixed-citation><mixed-citation xml:lang="en">Eremeev P.G. Suspended structures. Stroitel'nye materialy. 2022; 10: 62−67. 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