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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">10.33979/2073-7416-2020-87-1-3-13</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-252</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>ПОЛЕ НАПРАВЛЕНИЙ ТРЕЩИН В ЖЕЛЕЗОБЕТОННЫХ ИЗГИБАЕМЫХ ЭЛЕМЕНТАХ, УСИЛЕННЫХ КОМПОЗИТНЫМИ МАТЕРИАЛАМИ</article-title><trans-title-group xml:lang="en"><trans-title>THE FIELD OF CRACKS DIRECTIONS IN REINFORCED CONCRETE BENDING ELEMENTS STRENGTHENED BY THE EXTERNAL COMPOSITE REINFORCEMENT</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>Курнавина</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurnavina</surname><given-names>S. O.</given-names></name></name-alternatives><email xlink:type="simple">sofyK@yandex.ru</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>Антонов</surname><given-names>М. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Antonov</surname><given-names>M. D.</given-names></name></name-alternatives><email xlink:type="simple">mishany96969@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 «Национальный исследовательский Московский государственный строительный университет»</institution></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2020</year></pub-date><volume>0</volume><issue>1</issue><fpage>3</fpage><lpage>13</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Курнавина С.О., Антонов М.Д., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Курнавина С.О., Антонов М.Д.</copyright-holder><copyright-holder xml:lang="en">Kurnavina S.O., Antonov M.D.</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/252">https://construction.elpub.ru/jour/article/view/252</self-uri><abstract><p>В расчете железобетонных изгибаемых элементов по наклонным сечениям существенную роль играет расчетная проекция наклонного сечения. Задача определения угла наклона трещины остается актуальной и в элементах, усиленных композитными материалами. Предложен метод определения угла наклона трещины в любой точке по пролету изгибаемого элемента с усилением. Расчетному углу наклона трещины соответствует минимум внешней нагрузки, вызывающей ее раскрытие и определяемой из уравнения энергетического баланса. На основе данного метода проведены расчеты поля направлений трещин в элементах, усиленных композитными материалами, и проведен анализ полученных зависимостей угла наклона трещин от соотношения обычной и композитной арматуры и коэффициента гипотезы билинейных сечений.</p></abstract><trans-abstract xml:lang="en"><p>The design projection of the inclined section is an important factor in the estimation of strength of reinforced concrete structures by inclined sections. The problem of determination of the crack inclination angle is also essential for the elements strengthened by the external composite rein-forcement. The method of the inclination angle determination in any point along the span of strength-ened bending element is proposed. The design inclination angle of a crack corresponds to the minimum of external load causing its opening, which is obtained from the energy balance equation. The calculations of bending elements strengthened by composite materials have been carried out. The ob-tained dependence of cracks inclination angles on the conventional to composite reinforcement ratio and on the coefficient of the bilinear section hypothesis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>поле направлений трещин</kwd><kwd>усиление композитными материалами</kwd></kwd-group><kwd-group xml:lang="en"><kwd>the field of cracks directions</kwd><kwd>strengthening by external composite reinforcement</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
