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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">10.33979/2073-7416-2022-104-6-40-49</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-550</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>ПРОЧНОСТЬ И ДЕФОРМАТИВНОСТЬ СЫРЬЕВОЙ ДРЕВЕСИНЫ ПОСЛЕ ОГНЕВОГО ВОЗДЕЙСТВИЯ</article-title><trans-title-group xml:lang="en"><trans-title>STRENGTH AND DEFORMABILITY OF RAW WOOD AFTER FIRE EXPOSURE</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>Лукина</surname><given-names>Анастасия Васильевна</given-names></name><name name-style="western" xml:lang="en"><surname>Lukina</surname><given-names>Anastasiya V.</given-names></name></name-alternatives><email xlink:type="simple">pismo.33@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>Лисятников</surname><given-names>Михаил Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Lisyatnikov</surname><given-names>Mikhail S.</given-names></name></name-alternatives><email xlink:type="simple">mlisyatnikov@mail.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>Мартынов</surname><given-names>Владислав Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Martinov</surname><given-names>Vladislav Al.</given-names></name></name-alternatives><email xlink:type="simple">martinov3369@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>Рощина</surname><given-names>Светлана Ивановна</given-names></name><name name-style="western" xml:lang="en"><surname>Roschina</surname><given-names>Svetlana Iv.</given-names></name></name-alternatives><email xlink:type="simple">rsi3@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 «Владимирский государственный университет имени Александра Григорьевича и Николая Григорьевича Столетовых»</institution></aff><aff xml:lang="en"><institution>Vladimir State University named after Alexander and Nikolay Stoletovs</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>11</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>6</issue><fpage>40</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лукина А.В., Лисятников М.С., Мартынов В.А., Рощина С.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Лукина А.В., Лисятников М.С., Мартынов В.А., Рощина С.И.</copyright-holder><copyright-holder xml:lang="en">Lukina A.V., Lisyatnikov M.S., Martinov V.A., Roschina S.I.</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/550">https://construction.elpub.ru/jour/article/view/550</self-uri><abstract><p>Изучение древесины со сниженными физико-механическими характеристиками, в том числе древесины подверженной огневому воздействию, является важным шагом к бережливому и рациональному природопользованию. Пожары вызывают изменения физико-механических свойств древесины: влажности, плотности и прочности. Провели испытания на статический изгиб, сжатие и растяжение вдоль волокон. Снижение плотности и прочности в древесине, подверженной пожару происходят по всей высоте ствола. Наблюдается следующая закономерность: в комлевой части плотность выше, чем в срединной части. Снижение прочности в срединной и комлевой частях составляет: при сжатии вдоль волокон 15-18%; при растяжении вдоль волокон до 24%. Самое высокая потеря прочности произошли в испытаниях на статический изгиб: в вершинной части до 42%, в срединной части до 29%, в комлевой части до 23%. Наименьшее снижение прочности по всем испытаниям произошло в образцах, взятых из комлевой части.</p></abstract><trans-abstract xml:lang="en"><p>The study of wood with reduced physical and mechanical characteristics, including wood exposed to fire, is an important step towards economical and rational environmental management. Fires cause changes in the physical and mechanical properties of wood: moisture content, density and strength. Conducted tests for static bending, compression and tension along the fibers. Decrease in density and strength in fire-prone wood occurs along the entire height of the trunk. The following pattern is observed: in the butt part, the density is higher than in the middle part. The decrease in strength in the middle and butt parts is: in compression along the fibers 15-18%; when stretched along the fibers up to 24%. The highest loss of strength occurred in tests for static bending: in the top part up to 42%, in the middle part up to 29%, in the buttom part up to 23%. The smallest decrease in strength in all tests occurred in samples taken from the buttom.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>древесина</kwd><kwd>деревянные конструкции</kwd><kwd>прочность</kwd><kwd>деформации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>wood</kwd><kwd>wooden structures</kwd><kwd>strength</kwd><kwd>deformation</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">Xu K., Huang S., He F. Modeling fire hazards for the maintenance of long-term forest inventory plots in Alberta, Canada. For. Ecol. Manage. 2022. No. 513. Pp. 650-663. doi:10.1016/j.foreco.2022.120206</mixed-citation><mixed-citation xml:lang="en">Xu K., Huang S., He F. Modeling fire hazards for the maintenance of long-term forest inventory plots in Alberta, Canada. For. Ecol. Manage. 2022. No. 513. 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