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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">24466</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2020-16-4-243-249</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Analysis and design of building structures</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Расчет и проектирование строительных конструкций</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Modeling of random static loads on a structural cover with limited statistical data</article-title><trans-title-group xml:lang="ru"><trans-title>Моделирование случайной статической нагрузки на покрытия сооружений при неполной статистической информации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="spin">4738-8927</contrib-id><name-alternatives><name xml:lang="en"><surname>Solovev</surname><given-names>Sergey A.</given-names></name><name xml:lang="ru"><surname>Соловьев</surname><given-names>Сергей Александрович</given-names></name></name-alternatives><bio xml:lang="en">Associate Professor of the Department of Industrial and Civil Engineering, Candidate of Technical Sciences</bio><bio xml:lang="ru">доцент кафедры промышленного и гражданского строительства, кандидат технических наук</bio><email>solovevsa@vogu35.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Vologda State University</institution></aff><aff><institution xml:lang="ru">Вологодский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2020</year></pub-date><volume>16</volume><issue>4</issue><issue-title xml:lang="en">VOL 16, NO4 (2020)</issue-title><issue-title xml:lang="ru">ТОМ 16, №4 (2020)</issue-title><fpage>243</fpage><lpage>249</lpage><history><date date-type="received" iso-8601-date="2020-08-29"><day>29</day><month>08</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Solovev S.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Соловьев С.А.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Solovev S.A.</copyright-holder><copyright-holder xml:lang="ru">Соловьев С.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/24466">https://journals.rudn.ru/structural-mechanics/article/view/24466</self-uri><abstract xml:lang="en">Relevance. Loads on structures are complex stochastic elements that include several types of uncertainties simultaneously. The article describes a probabilistic approach to the load modeling on structural covers taking into account limited statistical data, when the parameters of distribution functions are presented in an interval form. The aim of the work is development of an approach to modeling the probabilistic distribution of random load on the structural surface in conditions of limited (incomplete) statistical information about the design load. Methods. The probability distribution of a particular type of loading is represented as p-boxes (probability boxes). A numerical example shows an algorithm for determining a p-box consisting of a sum of p-boxes that characterize different loads with different boundary distribution functions. Results. Based on the proposed approach, it is possible to define the intervals of normative and design loads with a given confidence level, to estimate the failure probability of structural elements, to assess the risk of an accident and also to make selection for structural element cross-section at the target level of reliability.</abstract><trans-abstract xml:lang="ru">Актуальность. Нагрузки на сооружения представляют собой сложные стохастические структуры, включающие в себя несколько типов неопределенностей одновременно. В статье разработан подход к вероятностному моделированию нагрузки на покрытие сооружений с учетом неполной статистической информации, когда параметры функций распределения представлены в интервальной форме. Цель исследования - разработка подхода к моделированию вероятностного распределения случайной нагрузки на покрытие сооружений в условиях ограниченной (неполной) статистической информации о нагрузке. Методы. Распределение вероятностей отдельного вида нагружения представлено в виде p-блоков (probability boxes). На численном примере показан алгоритм определения p-блока, состоящего из суммы p-блоков, характеризующих различные нагружения с различными граничными функциями распределения. Результаты. На основе предложенного подхода можно определить интервалы нормативной и расчетной нагрузки с заданной обеспеченностью, рассчитать вероятность безотказной работы элемента сооружений, произвести оценку риска аварии рассматриваемого элемента сооружений, а также подбор сечения элемента по заданному уровню надежности.</trans-abstract><kwd-group xml:lang="en"><kwd>structural design</kwd><kwd>random variable</kwd><kwd>cover</kwd><kwd>evidence theory</kwd><kwd>p-boxes</kwd><kwd>interval value</kwd><kwd>design load</kwd><kwd>truss</kwd><kwd>roof beam</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>проектирование</kwd><kwd>случайная величина</kwd><kwd>покрытие</kwd><kwd>теория свидетельств</kwd><kwd>p-блоки</kwd><kwd>интервал значений</kwd><kwd>расчетная нагрузка</kwd><kwd>ферма</kwd><kwd>балка покрытия</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kozak D.L., Liel A.B. Reliability of steel roof structures under snow loads. 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