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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">vdgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Дагестанского государственного технического университета. Технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of Dagestan State Technical University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6185</issn><issn pub-type="epub">2542-095X</issn><publisher><publisher-name>Daghestan State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21822/2073-6185-2026-53-2-171-182</article-id><article-id custom-type="elpub" pub-id-type="custom">vdgtu-2104</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 И АРХИТЕКТУРА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BUILDING AND ARCHITECTURE</subject></subj-group></article-categories><title-group><article-title>Учет сдвиговой жесткости ребер при исследовании напряженно-деформированного состояния подкрепленных плит методами Л.В. Канторовича и Ритца</article-title><trans-title-group xml:lang="en"><trans-title>Taking into account the shear stiffness of ribs in the study of the stress-strain state of reinforced slabs using the methods of L.V. Kantorovich and Ritz</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>Афанасьева</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Afanasyeva</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Афанасьева Елена Олеговна, аспирант, кафедра информационных систем и технологий</p><p>190005, 2-я Красноармейская ул., д.4, Санкт-Петербург</p></bio><bio xml:lang="en"><p>Elena O. Afanaseva, Graduate student, Department of Information Systems and Technologies</p><p>4, 2nd Krasnoarmeiskaya St., St Petersburg, 190005</p></bio><email xlink:type="simple">elena.afanaseva2064@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Карпов Владимир Васильевич, доктор технических наук, профессор, профессор-консультант кафедры технологий информационного и математического моделирования</p><p>190005, 2-я Красноармейская ул., д.4, Санкт-Петербург</p></bio><bio xml:lang="en"><p>Vladimir V.Karpov, Dr. Sci. (Eng.), Prof., Consulting Prof., Department of Information and Mathematical Modeling Technologies</p><p>4, 2nd Krasnoarmeiskaya St., St Petersburg, 190005</p></bio><email xlink:type="simple">vvkarpov@lan.spbgasu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный архитектурно-строительный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg State University of Architecture and Civil Engineering</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>10</day><month>08</month><year>2026</year></pub-date><volume>53</volume><issue>2</issue><fpage>171</fpage><lpage>182</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Афанасьева Е.О., Карпов В.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Афанасьева Е.О., Карпов В.В.</copyright-holder><copyright-holder xml:lang="en">Afanasyeva E.O., Karpov 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.dgtu.ru/jour/article/view/2104">https://vestnik.dgtu.ru/jour/article/view/2104</self-uri><abstract><p>Цель. Целью исследования является разработка метода, основанного на совмещении методов Л. В. Канторовича и Ритца, для расчета напряженно-деформированного состояния ребристых пластин с учетом деформаций сдвига.Метод. Математическая модель построена на основании функционала полной потенциальной энергии деформации. Решение основано на понижении мерности двумерной задачи до одномерной с использованием метода Л.В. Канторовича и применении метода Ритца при дискретной аппроксимации перемещений.Результат. В методе Л.В. Канторовича предложено аппроксимирующие функции получать из расчета системы дифференциальных уравнений для балки Тимошенко. В методе Ритца при дискретной аппроксимации перемещений одномерная область разбивается на участки интегрирования, и учет ребер жесткости осуществляется при помощи дельта-функций Дирака или единичных столбчатых функций. Приведены выражения для получения жесткости на изгиб и сдвиг для ребер со сплошной стенкой и ребер в виде ферм. Проведены численные эксперименты на нескольких типах ребер с различной их высотой и выполнено сравнение с методом конечных элементов.Вывод. Определено совпадение разрабатываемого метода и метода конечных элементов для перемещений, изгибающих моментов и продольных усилий в ребрах. Разработанный метод дает более консервативные значения поперечных сил на опорах.</p></abstract><trans-abstract xml:lang="en"><p>Objective. The aim of the study is to develop a method based on a combination of L.V. Kantorovich and Ritz methods for calculating the stress-strain state of ribbed plates taking into account shear strains.Method. The mathematical model is constructed based on the functional of the total potential energy of deformation. The solution is based on reducing the dimensionality of the two-dimensional problem to a one-dimensional one using L.V. Kantorovich's method and then applying the Ritz method for discrete approximation of displacements.Result. In L.V. Kantorovich's method, it is proposed to obtain approximating functions from the calculation of a system of differential equations for the Timoshenko beam. In the Ritz method, for discrete approximation of displacements, the one-dimensional domain is divided into integration sections, and the stiffeners are taken into account using Dirac delta functions or unit columnar functions. Expressions for obtaining bending and shear stiffness for solid-wall and truss-type ribs are presented. Numerical experiments are conducted on several rib types with different heights and compared with the finite element method.Conclusion. It is concluded that the developed method and the finite element method agree well for displacements, bending moments, and longitudinal forces in the ribs. It is found that the developed method yields more conservative values for shear forces at supports.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>плита</kwd><kwd>ребра жесткости</kwd><kwd>метод Л.В. 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