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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">mgssuvest</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник МГСУ</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik MGSU</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-0935</issn><issn pub-type="epub">2304-6600</issn><publisher><publisher-name>Moscow State University of Civil Engineering (National Research University) (MGSU)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/1997-0935.2023.9.1383-1393</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-47</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>Проектирование и конструирование строительных систем. Строительная механика. Основания и фундаменты, подземные сооружения</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Construction system design and layout planning. Construction mechanics. Bases and foundations, underground structures</subject></subj-group></article-categories><title-group><article-title>Моделирование статически нагруженной одиночной сваи с учетом нелинейности грунта оснований</article-title><trans-title-group xml:lang="en"><trans-title>Modelling of statically loaded single pile taking into account nonlinearity of foundation soil</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2872-0723</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Школяр</surname><given-names>Ф. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Shkoliar</surname><given-names>F. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Филипп Сергеевич Школяр — кандидат технических наук, доцент</p><p>195251, г. Санкт-Петербург, ул. Политехническая, д. 29</p><p>ResearcherID: GLR-0652-2022</p></bio><bio xml:lang="en"><p>Filipp S. Shkoliar — Candidate of Technical Sciences, Associate Professor</p><p>29 Politekhnicheskaya st., St. Petersburg, 195251</p><p>ResearcherID: GLR-0652-2022</p></bio><email xlink:type="simple">shkolyar.fs@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>Рогозинникова</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rogozinnikova</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дарья Владимировна Рогозинникова — студентка</p><p>195251, г. Санкт-Петербург, ул. Политехническая, д. 29</p></bio><bio xml:lang="en"><p>Darya V. Rogozinnikova — student</p><p>29 Politekhnicheskaya st., St. Petersburg, 195251</p></bio><email xlink:type="simple">dar2504@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Санкт-Петербургский политехнический университет Петра Великого (СПбПУ)<country>Россия</country></aff><aff xml:lang="en">Peter the Great St. Petersburg Polytechnic University (SPbPU)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2023</year></pub-date><volume>18</volume><issue>9</issue><fpage>1383</fpage><lpage>1393</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Школяр Ф.С., Рогозинникова Д.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Школяр Ф.С., Рогозинникова Д.В.</copyright-holder><copyright-holder xml:lang="en">Shkoliar F.S., Rogozinnikova D.V.</copyright-holder><license 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://www.vestnikmgsu.ru/jour/article/view/47">https://www.vestnikmgsu.ru/jour/article/view/47</self-uri><abstract><sec><title>Введение</title><p>Введение. Моделирование работы свайных фундаментов в современных программных комплексах (ПК) зачастую проводится в линейной постановке задачи и с применением коэффициентов, завышающих в несколько раз результаты осадок свайных фундаментов. Такой подход приводит к значительному перерасходу материалов и завышению сметной стоимости строящегося объекта. В современных реалиях проектировщики сталкиваются с проблемой моделирования расчетной ситуации, наиболее приближенной к реальной работе сваи в грунте, а поскольку грунт основания — неоднородная среда, расчет должен выполняться нелинейно, что трудоемко в ПК. Осуществляется численное сравнение натурных испытаний одиночной сваи под статической нагрузкой и расчет в ПК с учетом нелинейности грунтов основания.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Расчеты проводятся в конечно-элементном ПК ЛИРА-САПР при помощи моделирования расчетной схемы объемными конечными элементами. Анализируется изменение осадки свай в различных грунтах при ступенчатой нагрузке.</p></sec><sec><title>Результаты</title><p>Результаты. Произведен численный эксперимент изменения осадки одиночной сваи с использованием объемной конечно-элементной модели с заданной физической нелинейностью грунта. Выполнено сравнение полученных результатов проведенного численного эксперимента с результатами натурного эксперимента.</p></sec><sec><title>Выводы</title><p>Выводы. Результаты исследования показывают большое расхождение между осадками свай по натурным испытаниям и результатам расчетов по СП 24.13330.2021. При помощи современных ПК существует возможность проведения более точных расчетов. Однако введение поправочных коэффициентов может приблизить расчетную ситуацию в соответствии с нормативными документами к более реальным условиям деформирования грунтов оснований в процессе предварительного выбора.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Modelling of pile foundations in modern software packages (PC) is often carried out in a linear formulation of the problem and with the use of coefficients that overestimate the results of pile foundations by several times. This approach leads to significant overconsumption of materials and overestimation of the estimated cost of the object under construction. In modern realities, designers are faced with the problem of modelling the design situation, which is closest to the real operation of the pile in the ground, and since the foundation soil is a heterogeneous medium, the calculation must be carried out non–linearly, which is quite time-consuming in software packages. A numerical comparison of full-scale tests of a single pile under static load and calculation in a software package, taking into account the nonlinearity of the foundation soils, is carried out.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The calculations are carried out in the finite element software package LIRA-CAD by modelling the design scheme with volumetric finite elements. The change in the settlement of piles in different soils under step load is analyzed.</p></sec><sec><title>Results</title><p>Results. Numerical experiment of change in the settlement of a single pile using a volumetric finite element model with a given physical nonlinearity of the soil was performed. The obtained results of the numerical experiment are compared with the results of the full-scale experiment.</p></sec><sec><title>Conclusions</title><p>Conclusions. The results of the study show a large discrepancy between the settlements of piles according to field tests and the results of calculations according to SP 24.13330.2021. With the help of modern software packages, it is possible to carry out more accurate calculations. However, the introduction of correction coefficients can bring the calculated situation according to regulatory documents closer to more real conditions of deformation of the foundation soils in the process of preliminary selection.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>одиночная свая</kwd><kwd>осадка</kwd><kwd>жесткость</kwd><kwd>основание</kwd><kwd>конечный элемент</kwd><kwd>характеристики грунта</kwd><kwd>напряженно-деформированное состояние</kwd></kwd-group><kwd-group xml:lang="en"><kwd>single pile</kwd><kwd>settlement</kwd><kwd>stiffness</kwd><kwd>foundation</kwd><kwd>finite element</kwd><kwd>soil characteristics</kwd><kwd>stress-strain state</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">Konyushkov V.V., Le V.T. Side friction of sandy and clay soils and their resistance under the toe of deep bored piles // Architecture and Engineering. 2020. 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