constructionСтроительство и реконструкцияBuilding and Reconstruction2073-7416Орловский государственный университет имени И.С. Тургенева10.33979/2073-7416-2025-118-2-81-93construction-884Research ArticleБЕЗОПАСНОСТЬ ЗДАНИЙ И СООРУЖЕНИЙBUILDING AND STRUCTURE SAFETYВлияние коррозионных повреждений арматуры на динамическое сотояние сжатых железобетонных конструкцийEffect of Reinforcement Corrosion Damage on Dynamic Behavior of Compressed Reinforced Concrete StructuresТамразянА. Г.TamrazyanA. G.

Тамразян Ашот Георгиевич - чл.-корр. РААСН, д-р техн. наук, профессор, заведующий кафедрой.

Москва

Tamrazyan Ashot G. - Corresponding member of RAACS, Doctor of Technical Sciences, Professor, Неad of the Department of Reinforced Concrete and Masonry Structurses.

Moscow

tamrazian@mail.ruКудрявцевM. В.KudryavtsevM. V.

Кудрявцев Максим Владимирович - аспирант, преподаватель кафедры железобетонных и каменных конструкций.

Москва

Kudryavtsev Maksim V. - Postgraduate student, lecturer at the Department of Reinforced Concrete and Masonry Structures.

Moscow

k.m.v.29.12.96@yandex.ruФГБОУ ВО «Национальный исследовательский Московский государственный строительный университет»National Research Moscow State University of Civil Engineering202513052025028193Copyright © Тамразян А.Г., Кудрявцев M.В., 20252025Тамразян А.Г., Кудрявцев M.В.Tamrazyan A.G., Kudryavtsev M.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://construction.elpub.ru/jour/article/view/884

Самый часто встречаемый дефект в железобетонных конструкциях — это коррозионные повреждения рабочей арматуры в теле бетона. Основную опасность коррозионных повреждений несут несколько факторов: увеличение продуктов коррозии в объёме и создание дополнительных растягивающих напряжений в бетоне по длине стержня, что приводит к откалыванию защитного слоя; уменьшение диаметра рабочей арматуры; участки локального оголения арматуры вследствие разрушения защитного слоя. Помимо потери общей несущей способности конструкций вследствие уменьшения площади сечения арматуры и бетона, изменяются ещё и их динамические характеристики. Изменение динамических характеристик конструкций влияет на оценку сейсмостойкости зданий при расчете по акселлерограммам на доминантные частоты колебаний. В работе представлен анализ отечественной и зарубежной литературы по оценке сцепления арматуры с бетоном, приведены результаты испытаний, проведенных авторами статьи, по оценке потери сцепления коррозионно-поврежденного арматурного стержня в теле бетона и приведены результаты изменения периодов и частот колебаний поврежденных колонн.

The most common defect in reinforced concrete structures is corrosion damage of the working reinforcement in the concrete body. The main danger of corrosion damage is caused by several factors: increase of corrosion products in volume and creation of additional tensile stresses in concrete along the length of the rod, which leads to spalling of the protective layer; reduction of the diameter of the working reinforcement; areas of local bare reinforcement due to destruction of the protective layer. In addition to the loss of the total load-bearing capacity of structures due to the reduction of the cross- sectional area of reinforcement and concrete, their dynamic characteristics also change. The change of dynamic characteristics of structures affects the assessment of seismic resistance of buildings when calculated by accelerograms for dominant frequencies of vibrations. The paper presents the analysis of domestic and foreign literature on the assessment of the bond of reinforcement with concrete, the results of tests conducted by the authors of the paper on the assessment of the loss of bond of corrosion-damaged reinforcing bars in the body of concrete and the results of changes in the periods and frequencies of vibrations of damaged columns.

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The authors declare that there are no conflicts of interest present.