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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">42703</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2024-20-5-479-490</article-id><article-id pub-id-type="edn">CVGMIC</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Experimental researches</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные исследования</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">Monitoring of Technical Condition of Buildings by Seismic Method</article-title><trans-title-group xml:lang="ru"><trans-title>Мониторинг технического состояния зданий сейсмическим методом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1582-8113</contrib-id><contrib-id contrib-id-type="spin">7695-6043</contrib-id><name-alternatives><name xml:lang="en"><surname>Kurdanova</surname><given-names>Alena A.</given-names></name><name xml:lang="ru"><surname>Курданова</surname><given-names>Алёна Алексеевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Junior Researcher, Seismometry Laboratory</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории сейсмометрии</p></bio><email>a.truuuuman@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6222-7265</contrib-id><contrib-id contrib-id-type="spin">4710-9710</contrib-id><name-alternatives><name xml:lang="en"><surname>Voskresenskiy</surname><given-names>Mikhail N.</given-names></name><name xml:lang="ru"><surname>Воскресенский</surname><given-names>Михаил Николаевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Sciences, Senior Researcher, Head of the Seismometry Laboratory</p></bio><bio xml:lang="ru"><p>кандидат технических наук, старший научный сотрудник, заведующий лабораторией сейсмометрии</p></bio><email>voskresenskiy.mn@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1445-7250</contrib-id><contrib-id contrib-id-type="spin">9804-6660</contrib-id><name-alternatives><name xml:lang="en"><surname>Kosorotova</surname><given-names>Elena A.</given-names></name><name xml:lang="ru"><surname>Косоротова</surname><given-names>Елена Александровна</given-names></name></name-alternatives><bio xml:lang="en"><p>Junior Researcher, Laboratory of Seismometry</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории сейсмометрии</p></bio><email>kosorotiha30@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-8401-3450</contrib-id><contrib-id contrib-id-type="spin">4262-8937</contrib-id><name-alternatives><name xml:lang="en"><surname>Parygin</surname><given-names>Gennadiy I.</given-names></name><name xml:lang="ru"><surname>Парыгин</surname><given-names>Геннадий Иванович</given-names></name></name-alternatives><bio xml:lang="en"><p>Researcher, Laboratory of Seismometry</p></bio><bio xml:lang="ru"><p>научный сотрудник лаборатории сейсмометрии</p></bio><email>usc_gena@mail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Geophysics, Ural Branch of the Russian Academy of Science</institution></aff><aff><institution xml:lang="ru">Институт геофизики имени Ю.П. Булашевича Уральского отделения Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2024</year></pub-date><volume>20</volume><issue>5</issue><issue-title xml:lang="en">VOL 20, NO5 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 20, №5 (2024)</issue-title><fpage>479</fpage><lpage>490</lpage><history><date date-type="received" iso-8601-date="2025-01-31"><day>31</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Kurdanova A.A., Voskresenskiy M.N., Kosorotova E.A., Parygin G.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Курданова А.А., Воскресенский М.Н., Косоротова Е.А., Парыгин Г.И.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Kurdanova A.A., Voskresenskiy M.N., Kosorotova E.A., Parygin G.I.</copyright-holder><copyright-holder xml:lang="ru">Курданова А.А., Воскресенский М.Н., Косоротова Е.А., Парыгин Г.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/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/42703">https://journals.rudn.ru/structural-mechanics/article/view/42703</self-uri><abstract xml:lang="en"><p>The research object is the natural resonance frequencies of the buildings of the Ural Branch of the Russian Academy of Sciences (UB RAS) located in Ekaterinburg and their distribution at observation points. The method of spectral ratios (HVSR or the Nakamura method), which allows hidden construction defects to be identified, is applied to analyze the resonance characteristics. Periodic monitoring of technical condition allows to calculate and evaluate changes in dynamic characteristics over time. Equal values of the amplitude extrema of the spectral ratio curve and uniform distribution of the values throughout the building indicate a normal operational state of the structure. The presence of abnormally high values at some points may be due to hidden defects and requires additional study. A method for calculating vulnerability coefficient is demonstrated. According to the results of annual monitoring (since 2017), the stable state of the Institute of Geophysics building of UB RAS is demonstrated, and a comparison with resonant frequencies obtained from the standard project (Institute of Geology &amp; Geochemistry of UB RAS) is presented. This article presents a method for assessing seismic stability by calculating horizontal acceleration ( ) at observation points. Acceleration is calculated at the maximum possible seismic event in the studied region (44 cm/s²). The possible maximum acceleration is calculated, taking into account the characteristics of the soil, for the observation point with the highest , = 30.6 cm/s², which corresponds to an earthquake intensity of 5.6.</p></abstract><trans-abstract xml:lang="ru"><p>Объектом исследования стали резонансные частоты собственных колебаний зданий институтов УрО РАН в г. Екатеринбурге и их распределение в точках наблюдения. Для анализа резонансных характеристик применяется метод спектральных отношений (HVSR, или метод Накамуры), который позволяет выявить скрытые дефекты конструкции. Периодический мониторинг технического состояния строительных объектов позволяет вычислить и оценить изменение динамических характеристик объекта с течением времени. Одинаковые значения амплитуд экстремумов кривой спектральных отношений и равномерное распределение значений в объеме здания свидетельствуют о нормальном работоспособном состоянии конструкции. Присутствие в некоторых точках аномально высоких значений может быть обусловлено наличием скрытых дефектов и подлежит дополнительному изучению. Демонстрируется способ расчета и распределения коэффициента уязвимости в объеме исследуемых зданий. По результатам периодического мониторинга (проводится ежегодно с 2017 г.) демонстрируется устойчивое состояние здания Института геофизики УрО РАН и приводится сравнение резонансных частот, полученных в здании с типовым проектом (Институт геологии и геохимии УрО РАН). В представленной работе описан метод оценки сейсмической устойчивости здания с применением расчета ускорения в горизонтальной плоскости ( ) в точке наблюдения. Рассчитывается ускорение при максимально возможном сейсмическом событии в регионе исследования (44 см/с2). Вычисляется возможное максимальное ускорение с учетом характеристик грунта, для точки наблюдения с наибольшим , = 30,6 см/с2, что соответствует интенсивности землетрясения 5,6 балла.</p></trans-abstract><kwd-group xml:lang="en"><kwd>seismic stability</kwd><kwd>resonance</kwd><kwd>spectrum</kwd><kwd>monitoring</kwd><kwd>building</kwd><kwd>vulnerability</kwd><kwd>acceleration</kwd><kwd>natural vibrations</kwd><kwd>Nakamura’s method</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сейсмическая устойчивость</kwd><kwd>резонанс</kwd><kwd>спектр</kwd><kwd>мониторинг</kwd><kwd>здание</kwd><kwd>уязвимость</kwd><kwd>ускорение</kwd><kwd>собственные колебания</kwd><kwd>метод Накамуры</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Davydov V.A. Study of seismic response of soils in microseismic soundings of dams. 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