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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">23959</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2020-16-3-203-208</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">The trends and practical look of advanced steel frame structures</article-title><trans-title-group xml:lang="ru"><trans-title>Тенденции и практический вид современных стальных каркасных конструкций</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vatin</surname><given-names>Nikolay I.</given-names></name><name xml:lang="ru"><surname>Ватин</surname><given-names>Николай Иванович</given-names></name></name-alternatives><bio xml:lang="en">D.Sc. (Eng.), Professor, Higher School of Industrial Civil and Road Construction</bio><bio xml:lang="ru">доктор технических наук, профессор высшей школы промышленно-гражданского и дорожного строительства</bio><email>tesfaldethg@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gebre</surname><given-names>Tesfaldet Hadgembes</given-names></name><name xml:lang="ru"><surname>Гебре</surname><given-names>Тесфалдет Хадгембес</given-names></name></name-alternatives><bio xml:lang="en">PhD Student, Department of Civil Engineering, Engineering Academy</bio><bio xml:lang="ru">аспирант, департамент строительства, Инженерная академия</bio><email>tesfaldethg@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gebreslassie</surname><given-names>Shishay Berhane</given-names></name><name xml:lang="ru"><surname>Гебреслассие</surname><given-names>Шишай Берхане</given-names></name></name-alternatives><bio xml:lang="en">master student, Department of Civil Engineering, Engineering Academy</bio><bio xml:lang="ru">магистрант, департамент строительства, Инженерная академия</bio><email>tesfaldethg@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Peter the Great Saint Petersburg Polytechnic University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский политехнический университет Петра Великого</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Peoples' Friendship University of Russia (RUDN University)</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</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>3</issue><issue-title xml:lang="en">VOL 16, NO3 (2020)</issue-title><issue-title xml:lang="ru">ТОМ 16, №3 (2020)</issue-title><fpage>203</fpage><lpage>208</lpage><history><date date-type="received" iso-8601-date="2020-06-12"><day>12</day><month>06</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Vatin N.I., Gebre T.H., Gebreslassie S.B.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Ватин Н.И., Гебре Т.Х., Гебреслассие Ш.Б.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Vatin N.I., Gebre T.H., Gebreslassie S.B.</copyright-holder><copyright-holder xml:lang="ru">Ватин Н.И., Гебре Т.Х., Гебреслассие Ш.Б.</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/23959">https://journals.rudn.ru/structural-mechanics/article/view/23959</self-uri><abstract xml:lang="en">The aim of the work is to present the trend of the advancement of steel design code and practical approach of steel frame design from the current AISC-LFDR to the advanced analysis. As the trend of steel frame analysis method is from first-order elastic analysis to second-order inelastic analysis which is an advanced analysis. Methods. In this paper the comparison between the load - displacement curves of several structural analysis methods is presented. Case studies are considered to analyze by different methods and comparison of practical advanced analysis method with PROKON software. The case studies includes a two-story one bay steel frame and four bays of twelve-stories steel frame. The results of first-order elastic, elastic buckling, second-order and nonlinear analyses of an unbraced frame are compared and their difference is presents. The proposed software for advanced methods demonstrates the accuracy and the computational efficiency in predicting the nonlinear analysis response of steel frame structures.</abstract><trans-abstract xml:lang="ru">Цель исследования - изучить тенденцию развития строительных норм по стальным конструкциям и практического подхода к проектированию стальных каркасов от ныне действующих стандартов Американского института стальных конструкций до расчетов по методам более высокого порядка, поскольку развитие теории расчета стальных конструкций заключается в переходе от упруго-линейного расчета первого порядка к нелинейному расчету второго порядка. Методы. В работе представлено сравнение зависимостей нагрузки от перемещения, полученных по различным теориям расчета. Проводятся расчет конкретных примеров конструкций различными методами и сопоставление практического метода высокого порядка с программой PROKON. Конкретные примеры включают в себя двухэтажную однопролетную стальную раму и двенадцатиэтажную четырехпролетную раму. Результаты. Выполнено сравнение результатов упруго-линейного расчета первого порядка, расчета устойчивости по упругой схеме, расчета второго порядка и нелинейного расчета стальных рам и показано их различие. Предложенное программное обеспечение для расчета по методам высокого порядка демонстрирует точность и вычислительную эффективность в определении нелинейного поведения стальных конструкций.</trans-abstract><kwd-group xml:lang="en"><kwd>steel frame analysis</kwd><kwd>sway frame</kwd><kwd>nonlinear analysis</kwd><kwd>advanced analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>расчет стальных рам</kwd><kwd>рамы с поперечным смещением</kwd><kwd>нелинейный расчет</kwd><kwd>расчет высокого порядка</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>American Society of Civil Engineers Advanced Analysis in Steel Frame: Design Guidelines for Direct Second-Order Inelastic Analysis. 2013.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Chen W.F., Sohal I.S. 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