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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">sat</journal-id><journal-title-group><journal-title xml:lang="ru">НАУКА и ТЕХНИКА</journal-title><trans-title-group xml:lang="en"><trans-title>Science &amp; Technique</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-1031</issn><issn pub-type="epub">2414-0392</issn><publisher><publisher-name>Belarusian National Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2227-1031-2024-23-6-492-499</article-id><article-id custom-type="elpub" pub-id-type="custom">sat-2818</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>CIVIL AND INDUSTRIAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Особенности напряженного состояния композитной арматуры при испытаниях на разрыв</article-title><trans-title-group xml:lang="en"><trans-title>Features of the Stress State of Composite Reinforcement during Tensile Tests</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>Барсуков</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Barsukov</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, доцент</p><p>г. Гродно</p></bio><bio xml:lang="en"><p>Grodno</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лежава</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Lezhava</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент</p><p>г. Гродно</p></bio><bio xml:lang="en"><p>Grodno</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евсеева</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Evseeva</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент</p><p>Адрес для переписки:Евсеева Елена Анатольевна – Белорусский национальный технический университет пр. Независимости, 65/3,20113, г. Минск, Республика Беларусь.Тел.: + 375 17 239-93-04vm3_ftk@bntu.by</p></bio><bio xml:lang="en"><p>Address for correspondence:Evseeva Elena A.– Belarusian National Technical University146а, Nezavisimosty Ave., 220014, Minsk, Republic of Belarus.Тел.: + 375 17 239-93-04vm3_ftk@bntu.by</p></bio><email xlink:type="simple">vm3_ftk@bntu.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гродненский государственный университет имени Янки Купалы</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Yanka Kupala State University of Grodno</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>27</day><month>11</month><year>2024</year></pub-date><volume>23</volume><issue>6</issue><fpage>492</fpage><lpage>499</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Барсуков В.Г., Лежава А.Г., Евсеева Е.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Барсуков В.Г., Лежава А.Г., Евсеева Е.А.</copyright-holder><copyright-holder xml:lang="en">Barsukov V.G., Lezhava A.G., Evseeva E.A.</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://sat.bntu.by/jour/article/view/2818">https://sat.bntu.by/jour/article/view/2818</self-uri><abstract><p>Цель работы – установление особенностей напряженного состояния композитной строительной арматуры при испытаниях на разрыв, обусловленных погрешностями центрирования композитного стержня при его установке в анкерных муфтах. Составлена расчетная схема и соответствующее ей дифференциальное уравнение, описывающее напряженно-деформированное состояние стержня. Получены аналитические зависимости для определения изгибающего момента и вызванных им напряжений. Произведена расчетная оценка напряжений изгиба в сравнении с номинальными напряжениями растяжения стержня. Показано, что напряжения изгиба неравномерно распределены по длине стержня и достигают наибольших значений вблизи торцов испытательных муфт. Напряжения изгиба увеличиваются пропорционально эксцентриситету монтажа стержня в испытательных анкерных муфтах и снижаются с увеличением длины рабочей части стержня. На примере стеклопластиковой арматуры номинальным диаметром 6 мм, изготовленной в соответствии со СТБ 1103–98, произведена расчетная оценка этих напряжений для широкого диапазона изменения эксцентриситета расположения композитного стержня в анкерных муфтах и длины рабочей части образца для испытаний. Показано, что применение коротких образцов должно сопровождаться повышением точности центрирования стержня в испытательных анкерных муфтах. Предложена удобная для инженерных расчетов методика определения напряжений изгиба и полных напряжений в композитном стержне. Результаты исследований могут быть использованы в инженерной практике и в учебном процессе при подготовке специалистов строительного и химико-технологического профиля.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the work is to establish the characteristics of the stress state of composite building reinforcement during tensile tests, caused by errors in the centering of the composite rod when installed in anchor couplings. A calculation scheme and a corresponding differential equation describing the stress-strain state of the rod have been compiled. Analytical dependencies were obtained to determine the bending moment and the stresses caused by it. A calculation estimate of bending stresses was made in comparison with the nominal tensile stresses of the rod. It is shown that bending stresses are unevenly distributed along the length of the rod and reach their highest values near the ends of the test couplings. Bending stresses increase in proportion to the eccentricity of the installation of the rod in the test anchor couplings and decrease with increasing length of the rod working part. Using the example of fiberglass reinforcement with a nominal diameter of 6 mm, manufactured in accordance with СТБ (STB) 1103–98, a calculation estimate of these stresses was made for a wide range of changes in the eccentricity of the composite rod in the anchor couplings location and the length of the working part of the test sample. It is shown that the use of short samples should be accompanied by an increase in the accuracy of rod centering in test anchor couplings. A method convenient for engineering calculations is proposed for determining bending stresses and total stresses in a composite rod. The research results can be used in engineering practice and in the educational process when training specialists in construction and chemical technology.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>композитная арматура</kwd><kwd>испытания</kwd><kwd>разрыв</kwd><kwd>прочность</kwd><kwd>монтажная погрешность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>composite reinforcement</kwd><kwd>testing</kwd><kwd>rupture</kwd><kwd>strength</kwd><kwd>installation error</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">Guide for the Design and Construction of Structural Concrete Reinforced with FRP bars: ACI 440.1R–06. Detroit: American Concrete Institute (ACI), 2006. 44 р.</mixed-citation><mixed-citation xml:lang="en">ACI 440.1R–06. 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