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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">10.33979/2073-7416-2020-92-6-51-58</article-id><article-id custom-type="elpub" pub-id-type="custom">construction-323</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>БЕЗОПАСНОСТЬ ЗДАНИЙ И СООРУЖЕНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BUILDING AND STRUCTURE SAFETY</subject></subj-group></article-categories><title-group><article-title>АНАЛИЗ НАДЕЖНОСТИ ЭЛЕМЕНТОВ СООРУЖЕНИЙ НА ОСНОВЕ P-БЛОКОВ</article-title><trans-title-group xml:lang="en"><trans-title>STRUCTURAL RELIABILITY ANALYSIS BASED ON P-BOXES</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>Соловьев</surname><given-names>Сергей Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Solovyev</surname><given-names>Sergey Al.</given-names></name></name-alternatives><email xlink:type="simple">ser6sol@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Вологодский государственный университет» (ВоГУ)</institution></aff><aff xml:lang="en"><institution>Vologda State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>14</day><month>01</month><year>2021</year></pub-date><volume>0</volume><issue>6</issue><fpage>51</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Соловьев С.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Соловьев С.А.</copyright-holder><copyright-holder xml:lang="en">Solovyev S.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://construction.elpub.ru/jour/article/view/323">https://construction.elpub.ru/jour/article/view/323</self-uri><abstract><p>В статье представлен метод расчета надежности (в виде вероятности безотказной работы) элементов сооружений на основе p-блоков. Показан алгоритм построения двух p-блоков: при отсутствии информации о форме распределения вероятностей случайной величины и при конкретном вероятностном распределении, но с неточными (интервальными) оценками параметров функции распределения. Алгоритм для расчета надежности приведен на численном примере анализа надежности изгибаемой деревянной балки по критерию ее прочности. Результат расчета надежности представляет собой интервал границ вероятностей безотказной работы. Приведены рекомендации для сужения границ данного интервала, что может снизить эпистемическую неопределенность. На основе предлагаемого подхода могут быть разработаны частные методики расчета надежности для любых элементов сооружений. Приведены расчетные формулы для комплексной оценки надежности элемента сооружения как системы с учетом всех критериев предельных состояний.</p></abstract><trans-abstract xml:lang="en"><p>The article describes a method for reliability (probability of non-failure) analysis of structural elements based on p-boxes. An algorithm for constructing two p-blocks is shown. First p-box is used in the absence of information about the probability distribution shape of a random variable. Second p-box is used for a certain probability distribution function but with inaccurate (interval) function parameters. The algorithm for reliability analysis is presented on a numerical example of the reliability analysis for a flexural wooden beam by wood strength criterion. The result of the reliability analysis is an interval of the non-failure probability boundaries. Recommendations are given for narrowing the reliability boundaries which can reduce epistemic uncertainty. On the basis of the proposed approach, particular methods for reliability analysis for any structural elements can be developed. Design equations are given for a comprehensive assessment of the structural element reliability as a system taking into account all the criteria of limit states.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>надежность</kwd><kwd>p-блоки</kwd><kwd>безопасность</kwd><kwd>вероятность отказа</kwd><kwd>функции распределения</kwd><kwd>неопределенность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reliability</kwd><kwd>p-boxes</kwd><kwd>safety</kwd><kwd>failure probability</kwd><kwd>distribution functions</kwd><kwd>uncertainty</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">Melchers R.E., Beck A.T. Structural reliability analysis and prediction. 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