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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">10.22227/1997-0935.2024.9.1530-1540</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-376</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>Гидравлика. Геотехника. Гидротехническое строительство</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Hydraulics. Geotechnique. Hydrotechnical construction</subject></subj-group></article-categories><title-group><article-title>Влияние коэффициента неравномерности расширения образца глинистого грунта на механические характеристики</article-title><trans-title-group xml:lang="en"><trans-title>Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8787-826X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тер-Мартиросян</surname><given-names>А. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Ter-Martirosyan</surname><given-names>A. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Армен Завенович Тер-Мартиросян — доктор технических наук, профессор кафедры механики грунтов и геотехники, проректор</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ AuthorID: 675967, Scopus: 35621133900, ResearcherID: Q-8635-2017</p></bio><bio xml:lang="en"><p>Armen Z. Ter-Martirosyan — Doctor of Technical Sciences, Professor of the Department of Soil Mechanics and Geotechnics, Vice-rector</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>RSCI AuthorID: 675967, Scopus: 35621133900, ResearcherID: Q-8635-2017</p></bio><email xlink:type="simple">gic-mgsu@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0011-7095</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Анжело</surname><given-names>Г. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Angelo</surname><given-names>G. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Георгий Олегович Анжело — кандидат технических наук, доцент, руководитель Научно-образовательного центра «Геотехника» им. З.Г. Тер-Мартиросяна (НОЦ «Геотехника» им. З.Г. Тер-Мартиросяна)</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ AuthorID: 852458, Scopus: 57201551199, ResearcherID: AAC-4538-2022</p></bio><bio xml:lang="en"><p>Georgy O. Angelo — Candidate of Technical Sciences, Associate Professor, Head of the Scientific and Educational Center “Geotechnics” named after Z.G. Ter-Martirosyan (SEC “Geotechnics” named after Z.G. Ter-Martirosyan)</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>RSCI AuthorID: 852458, Scopus: 57201551199, ResearcherID: AAC-4538-2022</p></bio><email xlink:type="simple">nocgeo@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1522-320X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермошина</surname><given-names>Л. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermoshina</surname><given-names>L. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Любовь Юрьевна Ермошина — кандидат технических наук, научный сотрудник, Научно-образовательный центр «Геотехника» им. З.Г. Тер-Мартиросяна (НОЦ «Геотехника» им. З.Г. Тер-Мартиросяна)</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ AuthorID: 991280, Scopus: 57205215830, ResearcherID: AGV-6847-2022</p></bio><bio xml:lang="en"><p>Lyubov Yu. Ermoshina — Candidate of Technical Sciences, Researcher, Scientific and Educational Center “Geotechnics” named after Z.G. Ter-Martirosyan (SEC “Geotechnics” named after Z.G. Ter-Martirosyan)</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>RSCI AuthorID: 991280, Scopus: 57205215830, ResearcherID: AGV-6847-2022</p></bio><email xlink:type="simple">lyubov.ermoshina1801@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>Боков</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bokov</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Илья Алексеевич Боков — студент, лаборант, Научно-образовательный центр «Геотехника» им. З.Г. Тер-Мартиросяна (НОЦ «Геотехника» им. З.Г. Тер-Мартиросяна)</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p></bio><bio xml:lang="en"><p>Ilia A. Bokov — student, laboratory assistant, Scientific and Educational Center “Geotechnics” named after Z.G. Ter-Martirosyan (SEC “Geotechnics” named after Z.G. Ter-Martirosyan)</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p></bio><email xlink:type="simple">iliililia@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2024</year></pub-date><volume>19</volume><issue>9</issue><fpage>1530</fpage><lpage>1540</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тер-Мартиросян А.З., Анжело Г.О., Ермошина Л.Ю., Боков И.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тер-Мартиросян А.З., Анжело Г.О., Ермошина Л.Ю., Боков И.А.</copyright-holder><copyright-holder xml:lang="en">Ter-Martirosyan A.Z., Angelo G.O., Ermoshina L.Y., Bokov I.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://www.vestnikmgsu.ru/jour/article/view/376">https://www.vestnikmgsu.ru/jour/article/view/376</self-uri><abstract><sec><title>Введение</title><p>Введение. Определение прочностных и деформационных характеристик грунтов, слагающих грунтовый массив, является ключевым в процессе расчета и проектирования сооружений всех типов. Высокая точность при выявлении механических характеристик играет огромную роль на каждом этапе разработки проекта. Установки трехосного сжатия служат одними из самых популярных и широко используемых приборов при проведении лабораторных исследований, поскольку данный вид испытаний позволяет наиболее точно воспроизвести напряженно-деформированное состояние (НДС) грунтового массива и определить его механические характеристики.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Экспериментальные исследования выполнены на образцах глинистого грунта (супесь, суглинок, глина) в приборе трехосного сжатия в консолидированно-дренированном режиме с целью исследования влияния коэффициента неравномерности расширения образца грунта на его механические свойства.</p></sec><sec><title>Результаты</title><p>Результаты. Анализируя данные экспериментальных исследований, было получено, что коэффициент неравномерности расширения образца b оказывает значительное влияние на полученные значения механических характеристик глинистого грунта, а именно: значения угла внутреннего трения в среднем увеличились на 5 %; значения удельного сцепления в среднем увеличились на 4,4 %. Однако следует отметить, что, несмотря на увеличение прочностных характеристик испытанных образцов грунта, исключение из процесса обработки коэффициента b привело к снижению значений секущего модуля деформации при 50%-ной прочности Е50 в среднем на 4,5 %.</p></sec><sec><title>Выводы</title><p>Выводы. Полученные завышенные значения прочностных характеристик φ, с и заниженные значения деформационных характеристик Е50 не являются критичными, но для повышения точности расчетов, выполняемых на основе результатов, получаемых в итоге камеральной обработки протоколов лабораторных испытаний, требуется учитывать коэффициент неравномерности расширения b образца.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Determination of strength and deformation characteristics of soils composing the soil mass is the key process of calculation and design of structures of all types. High accuracy in determining mechanical characteristics plays a huge role at every stage of project development. Triaxial compression units are one of the most popular and widely used devices for laboratory research, as this type of testing allows you to reproduce the stress-strain state of the soil mass and determine its mechanical characteristics most accurately.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Experimental studies were performed on clay soil specimens (sandy loam, loam, clay) in a triaxial compression device in a consolidated-drained mode in order to study the effect of the coefficient of non-uniformity of expansion of the soil specimen on its mechanical properties.</p></sec><sec><title>Results</title><p>Results. Analyzing the data of experimental studies, it was found that the coefficient of non-uniformity of expansion of specimen b has a significant effect on the obtained values of the mechanical characteristics of clay soil, namely: the values of the angle of internal friction in the medium increased by 5 %; the values of specific adhesion increased by 4.4 % on average. However, it should be noted that despite the increase in the strength characteristics of the tested soil specimens, the exclusion of the coefficient b from the treatment process led to a decrease in the values of the secant deformation modulus at 50 % strength E50 by an average of 4.5 %.</p></sec><sec><title>Conclusions</title><p>Conclusions. The obtained overestimated values of strength characteristics φ, c and underestimated values of deformation characteristics E50 are not critical, however, to increase the accuracy of calculations performed based on the results obtained as a result of in-house processing of laboratory test specimens, the coefficient of uneven expansion b of the specimen should be taken into account.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>лабораторные испытания</kwd><kwd>трехосное сжатие</kwd><kwd>глинистый грунт</kwd><kwd>прочностные характеристики</kwd><kwd>деформационные характеристики</kwd><kwd>коэффициент неравномерности расширения образца грунта при трехосном сжатии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>laboratory tests</kwd><kwd>triaxial compression</kwd><kwd>clay soil</kwd><kwd>strength characteristics</kwd><kwd>deformation characteristics</kwd><kwd>coefficient of non-uniformity of expansion of the soil specimen under triaxial compression</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">Мирный А.Ю., Тер-Мартиросян А.З. 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