izvestswsuИзвестия Юго-Западного государственного университетаProceedings of the Southwest State University2223-15602686-6757ЮЗГУ10.21869/2223-1560-2024-28-3-82-99izvestswsu-1330Research ArticleСтроительствоConstructionsРасчет складчатых панелей из текстильно-армированного бетона по методу предельных усилийUltimate limit-state design of textile-reinforced concrete folded floor panelshttps://orcid.org/0000-0002-9081-9575ДонцоваА. Е.DontsovaA. E.

Донцова Анна Евгеньевна, ассистент высшей школы гидротехнического и энергетического строительства Инженерно-строительного  института,

д. 29, ул. Политехническая, г. Санкт-Петербург 195251.

Anna E. Dontsova, Assistant at the Higher School of Hydraulic Engineering and Energy Engineering of the Institute of Civil Engineering,

29, Polytechnicheskaya str., Saint Petersburg 195251.

dontsova_ae@spbstu.ruhttps://orcid.org/0000-0002-2930-5022СтоляровО. Н.StolyarovO. N.

Столяров  Олег Николаевич, кандидат технических наук, доцент высшей школы гидротехнического и энергетического  строительства Инженерно-строительного института, 

д. 29, ул. Политехническая, г. Санкт-Петербург 195251.

Oleg N. Stolyarov, Cand. of Sci. (Engineering), Associate Professor at the Higher School of Hydraulic Engineering and Energy Engineering of the Institute of Civil Engineering,

29, Polytechnicheskaya str., Saint Petersburg 195251.

stolyarov_on@spbstu.ruСанкт-Петербургский политехнический университет Петра ВеликогоPeter the Great St. Petersburg Polytechnic  University2024131220242838299Copyright © Донцова А.Е., Столяров О.Н., 20242024Донцова А.Е., Столяров О.Н.Dontsova A.E., Stolyarov O.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://izvestswsu.elpub.ru/jour/article/view/1330Цель исследования

Цель исследования. В предлагаемой публикации в качестве цели исследования выбрана оценка эффективности применения неметаллических сеток из высокопрочных волокон в армировании складчатых элементов. Для этого исследуются методы расчета складчатых конструкций из бетонных композитов и проводится сравнительный расчет конструкции с различными параметрами армирования. 

Методы

Методы. В статье проанализирован алгоритм расчета армоцементных конструкций по методу предельных усилий с переходом от исходного складчатого сечения к приведенному. По исследуемому методу проведен расчет тонкой складчатой панели, армированной сетками из различных материалов, с постоянным коэффициентом сетчатого армирования. В качестве армирования были рассмотрены сварная стальная сетка, тканая сетка из высокопрочных стеклянных волокон и тканая сетка из углеродных волокон. Попутно была решена обратная задача, в рамках которой подбирался коэффициент армирования, необходимый для обеспечения одинаковой несущей способности сечения при применении разных армирующих материалов.

Результаты

Результаты. Расчет показал наибольшую несущую способность сечения, армированного сеткой из углеродных волокон – 14,5 кНм. При армировании сеткой из высокопрочных стеклянных волокон несущая способность сечения составила 6,4 кНм. Наименьшие значения были получены при армировании складчатой панели сварной стальной сеткой: несущая способность сечения составила 1,72 кНм. Коэффициенты сетчатого армирования для стальной сетки (С), стеклянной сетки (ЩС) и углеродной сетки (У) распределились в соотношении С:ЩС:У=1:0,26:0,12.

Заключение

Заключение. Армирование бетонных композитов неметаллическими сетками имеет значительный потенциал для проектирования легких пространственных конструкций покрытий зданий и сооружений. Применение высокопрочных армирующих волокон позволяет достигнуть прочности панелей, сравнимой с прочностью традиционных армоцементных изделий. Необходимо рассмотреть прочие прочностные расчеты складчатых панелей с армированием неметаллическими сетками, а также экспериментально подтвердить результаты аналитических расчетов.

Purpose of reseach

Purpose of reseach. The main goal of this study is to evaluate the effectiveness of using non-metallic meshes made of high-strength fibres in the reinforcement of folded elements. For this purpose, methods for calculating folded structures made of concrete composites are investigated, and a comparative calculation of the structure with various reinforcement parameters is performed.

Methods

Methods. The study analyzes an algorithm for calculating reinforced cement structures using the limit force method with the transition from the original folded section to the reduced section. Using the method under study, we calculated a thin folded panel reinforced with meshes of various materials with a constant mesh reinforcement coefficient. Welded steel mesh, high-strength glass fiber textile mesh and carbon fiber textile mesh were considered as reinforcement. Simultaneously, the inverse problem was solved, within the framework of which the reinforcement coefficient necessary to ensure the same load-bearing capacity of the section when using different reinforcing materials was selected.

Results

Results. Sample of section reinforced with carbon fiber mesh exhibit the greatest ultimate load of 14.5 kNm . Sample of section reinforced with  glass fiber and welded steel mesh exhibit ultimate load of 6.4 kNm and 1.72 kNm, respectively. Inverse problem was also solved. The reinforcement ratio necessary to ensure equal load-bearing capacity of the panel reinforced with different materials was determined. The reinforcement ratios of steel mesh (S), AR-glass textile (G) and carbon textile (C) were found as S:G:C=1:0.26:0.12.

Conclusion

Conclusion. Reinforcement of concrete composites with non-metallic meshes has significant potential for the design of lightweight spatial structures for roofing buildings and structures. The use of high-strength reinforcing textile meshes makes it possible to achieve panel strength comparable to that of traditional reinforced concrete products. It is necessary to consider other strength calculations of folded panels reinforced with non-metallic meshes and experimentally confirm the results of analytical calculations.

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