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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">construction</journal-id><journal-title-group><journal-title xml:lang="ru">Строительство и реконструкция</journal-title><trans-title-group xml:lang="en"><trans-title>Building and Reconstruction</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7416</issn><publisher><publisher-name>Орловский государственный университет имени И.С. Тургенева</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33979/2073-7416-2023-105-1-3-15</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-569</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>ТЕОРИЯ ИНЖЕНЕРНЫХ СООРУЖЕНИЙ. СТРОИТЕЛЬНЫЕ КОНСТРУКЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORY OF ENGINEERING STRUCTURES. BUILDING UNITS</subject></subj-group></article-categories><title-group><article-title>ОБРАТНАЯ ЗАДАЧА КОШИ ДЛЯ СТОЕЧНО-БАЛОЧНОЙ КОНСТРУКТИВНОЙ СИСТЕМЫ</article-title><trans-title-group xml:lang="en"><trans-title>INVERSE CAUCHY PROBLEM FOR RACK-AND-BEAM STRUCTURE</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Локтионов</surname><given-names>Аскольд Петрович</given-names></name><name name-style="western" xml:lang="en"><surname>Loktionov</surname><given-names>Askold P.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kursk</p></bio><email xlink:type="simple">loapa@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Юго-Западный государственный университет»</institution></aff><aff xml:lang="en"><institution>Southwest State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>22</day><month>03</month><year>2023</year></pub-date><volume>1</volume><issue>1</issue><fpage>3</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Локтионов А.П., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Локтионов А.П.</copyright-holder><copyright-holder xml:lang="en">Loktionov A.P.</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://construction.elpub.ru/jour/article/view/569">https://construction.elpub.ru/jour/article/view/569</self-uri><abstract><p>Объектом исследования являются стоечно-балочные конструктивные системы зданий c жестким сопряжением балки со стойкой. Цель исследования состоит в оценке влияния на точность решения задачи погрешности входных данных и числа заданных коэффициентов уравнения прогибов. Исследования проведены аналитическоэкспериментальными методами сеточной регуляризации, редукции измерений, решений на измерительном компакте, полиномиальной аппроксимации, линейной лагранжевой интерполяции и численного дифференцирования.</p><p>Аналитически и натурным экспериментом смоделировано жесткое сопряжение балки со стойкой. Для количественной оценки эффективности решения задачи определены значения целевого параметра и критерия оптимизации по минимуму функции Лебега. Предложено использовать полученные результаты решения обратной задачи Коши при экспериментальнотеоретических исследованиях стоечно-балочных конструктивных систем.</p></abstract><trans-abstract xml:lang="en"><p>The object of this study is the building frames with rigid beam-to-column assemblies. The aim of the study is to assess the impact on the accuracy of the solution of the problem of the error of the input data and the number of given coefficients of the deflection equation. The studies were carried out using analytical and experimental methods of regularization, reduction of measurements, solutions on a measuring compact, polynomial approximation, linear Lagrangian interpolation and numerical differentiation.</p><p>Rigid coupling of a beam with a rack is modeled analytically and by a full-scale experiment. For a quantitative assessment of the effectiveness of solving the problem, the values of the target parameter and the optimization criterion are determined through the minimum of the Lebesgue function. It is proposed to use the obtained results of solving the inverse Cauchy problem in experimental and theoretical studies of rack-and-beam structures.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>балка</kwd><kwd>обратная задача Коши</kwd><kwd>модель измерения</kwd><kwd>прогиб</kwd><kwd>аппроксимация</kwd><kwd>критерий оптимизации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>beam</kwd><kwd>inverse Cauchy problem</kwd><kwd>measurement model</kwd><kwd>deflection</kwd><kwd>approximation</kwd><kwd>optimization criterion</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">Tusnina O.A., Danilov A.I. The stiffness of rigid joints of beam with hollow section column // Magazine of Civil Engineering. 2016. Vol. 64(4). Pp. 40–51. https:// doi.org/10.5862/MCE.64.4.</mixed-citation><mixed-citation xml:lang="en">Tusnina O.A., Danilov A.I. 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