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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">RUDN Journal of Engineering Research</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Engineering Research</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Инженерные исследования</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-8143</issn><issn publication-format="electronic">2312-8151</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">4743</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">Interaction of a protecting wall with a soil massif in process extractions of foundation pit</article-title><trans-title-group xml:lang="ru"><trans-title>Взаимодействие шпунтовой стенки с грунтовым массивом в процессе выемки котлована</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abu Mahadi Mohamed Ibrahim</surname><given-names>-</given-names></name><name xml:lang="ru"><surname>Абу Махади Мохаммед Ибрагим</surname><given-names>-</given-names></name></name-alternatives><bio xml:lang="en">Department of Building Structures and Constructions Engineering faculty</bio><bio xml:lang="ru">Кафедра строительных конструкции и сооружений Инженерный факультет</bio><email>abumahadi1@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Elfimov</surname><given-names>V I</given-names></name><name xml:lang="ru"><surname>Елфимов</surname><given-names>Валерий Иванович</given-names></name></name-alternatives><bio xml:lang="en">Department of Building Structures and Constructions Engineering faculty</bio><bio xml:lang="ru">Кафедра строительных конструкции и сооружений Инженерный факультет</bio><email>eks47@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Peoples Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2013-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2013</year></pub-date><issue>1</issue><issue-title xml:lang="en">NO1 (2013)</issue-title><issue-title xml:lang="ru">№1 (2013)</issue-title><fpage>109</fpage><lpage>117</lpage><history><date date-type="received" iso-8601-date="2016-09-07"><day>07</day><month>09</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="ru">Copyright ©; 2013, Абу Махади Мохаммед Ибрагим -., Елфимов В.И.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="ru">Абу Махади Мохаммед Ибрагим -., Елфимов В.И.</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/engineering-researches/article/view/4743">https://journals.rudn.ru/engineering-researches/article/view/4743</self-uri><abstract xml:lang="en">The computing procedure to determine the soil pressure on retaining structure and it’s displacements during earth excavation from a pit is developed. At the first stage the protecting construction (slurry wall, sheet piling, row of piles) is enclosed in a ground from the both sides, then the earth excavation from one side of the screen begins. The variations of soil pressure on the both sides of protecting screen are traced in the process of computing with proposed method. The critical depth of a pit at the moment of failure is determined. The retaining structure in the calculating scheme is simulated as an elastic beam construction. The soil is presented as a nonlinear model, in which the modulus of rigidity decreases when the soil stress is nearing to the ultimate limit value. The mathematical procedure consists of iteration of sequential separate calculations by Gauss’s method.</abstract><trans-abstract xml:lang="ru">Разработана расчетная схема определения давления грунта на ограждающую конструкцию и ее смещения в процессе выемки котлована. В исходном положении ограждающая конструкция (шпунт, стена в грунта, свайный ряд) окружена грунтом с обеих сторон. Затем начинается выемка грунта с левой стороны от ограждения. В ходе расчета следят за изменением давления грунта с обеих сторон ограждения. Определяется критическая глубина выемки котлована, при которой происходит обрушение стенки. Ограждающая конструкция моделируется в расчетной схеме упругой балочной плитой. Грунт описывается нелинейной моделью, в которой модуль сдвига уменьшается по мере приближения напряженного состояния грунта к предельному. Математическая процедура сводится к итерациям последовательных отдельных расчетов по методу Гаусса.</trans-abstract><kwd-group xml:lang="en"><kwd>soil pressure</kwd><kwd>retaining structure</kwd><kwd>nonlinear model</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>механика</kwd><kwd>механика грунтов</kwd><kwd>основание</kwd><kwd>фундамент</kwd><kwd>подпорная стена</kwd><kwd>шпунт</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Didukh B., Abu Mahadi M. Determination of parameters of nonlinear soil model in experimental soil tests with breaking load // Modern Problems of theory and practice in engineering research. Proceedings of the 35th Conference of Engineering Faculty. — Moscow, 235—237, (1999) (in Russian).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Nussbaumer M., Von Wolffersdortf P.-A. Retaining structures and excavated slopes. 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