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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Research of Fiberglass Polymer Concrete Switch Bars on Endurance Under Cyclic Loading
https://orcid.org/http://orcid.org/0000-0001-7194-9270
https://orcid.org/http://orcid.org/0000-0002-4548-8359
https://orcid.org/http://orcid.org/0000-0002-5921-8229
The purpose of this work is to identify to assess comprehensively the strength and endurance of fiberglass polymer concrete (FPC) elements at bending. To research the degree of influence of the reinforcement coefficient and controlled loading on the value of the destructive bending moment of fiberglass polymer concrete, the method of planning an experiment with the construction of an orthogonal central composite plan of the second order was used. It is proved that the percentage of reinforcement of prestressed beams and the degree of controlled stress significantly affect the load-bearing capacity of bars, the second factor is the most significant. The change in deformations along the height of the cross-section of beams confirms the acceptability of the flat cross-section hypothesis for fiberglass polymer concrete bending elements. It was found that the neutral axis gradually rises with increasing reinforcement coefficient and the degree of controlled stress, reducing the value of the relative compressed zone of polymer concrete. The nature of the destruction is basically the same, the destruction occurred in the compressed zone of polymer concrete in the area of pure bending. The values of the ultimate endurance for fiberglass polymer concrete elements are obtained for the cycle asymmetry coefficient ρ = 0.3 and for different degrees of pre-stress of fiberglass reinforcement. A theoretical analysis of the resistance of fiberglass polymer concrete elements to cyclic loads using a structural diagram is presented. The results of experiments and obtained theoretical dependences are compared.
Research of Fiberglass Polymer Concrete Switch Bars on Endurance Under Cyclic Loading
https://orcid.org/http://orcid.org/0000-0001-7194-9270
https://orcid.org/http://orcid.org/0000-0002-4548-8359
https://orcid.org/http://orcid.org/0000-0002-5921-8229
The purpose of this work is to identify to assess comprehensively the strength and endurance of fiberglass polymer concrete (FPC) elements at bending. To research the degree of influence of the reinforcement coefficient and controlled loading on the value of the destructive bending moment of fiberglass polymer concrete, the method of planning an experiment with the construction of an orthogonal central composite plan of the second order was used. It is proved that the percentage of reinforcement of prestressed beams and the degree of controlled stress significantly affect the load-bearing capacity of bars, the second factor is the most significant. The change in deformations along the height of the cross-section of beams confirms the acceptability of the flat cross-section hypothesis for fiberglass polymer concrete bending elements. It was found that the neutral axis gradually rises with increasing reinforcement coefficient and the degree of controlled stress, reducing the value of the relative compressed zone of polymer concrete. The nature of the destruction is basically the same, the destruction occurred in the compressed zone of polymer concrete in the area of pure bending. The values of the ultimate endurance for fiberglass polymer concrete elements are obtained for the cycle asymmetry coefficient ρ = 0.3 and for different degrees of pre-stress of fiberglass reinforcement. A theoretical analysis of the resistance of fiberglass polymer concrete elements to cyclic loads using a structural diagram is presented. The results of experiments and obtained theoretical dependences are compared.
Research of Fiberglass Polymer Concrete Switch Bars on Endurance Under Cyclic Loading
https://orcid.org/http://orcid.org/0000-0001-7194-9270
https://orcid.org/http://orcid.org/0000-0002-4548-8359
https://orcid.org/http://orcid.org/0000-0002-5921-8229
The purpose of this work is to identify to assess comprehensively the strength and endurance of fiberglass polymer concrete (FPC) elements at bending. To research the degree of influence of the reinforcement coefficient and controlled loading on the value of the destructive bending moment of fiberglass polymer concrete, the method of planning an experiment with the construction of an orthogonal central composite plan of the second order was used. It is proved that the percentage of reinforcement of prestressed beams and the degree of controlled stress significantly affect the load-bearing capacity of bars, the second factor is the most significant. The change in deformations along the height of the cross-section of beams confirms the acceptability of the flat cross-section hypothesis for fiberglass polymer concrete bending elements. It was found that the neutral axis gradually rises with increasing reinforcement coefficient and the degree of controlled stress, reducing the value of the relative compressed zone of polymer concrete. The nature of the destruction is basically the same, the destruction occurred in the compressed zone of polymer concrete in the area of pure bending. The values of the ultimate endurance for fiberglass polymer concrete elements are obtained for the cycle asymmetry coefficient ρ = 0.3 and for different degrees of pre-stress of fiberglass reinforcement. A theoretical analysis of the resistance of fiberglass polymer concrete elements to cyclic loads using a structural diagram is presented. The results of experiments and obtained theoretical dependences are compared.
Research of Fiberglass Polymer Concrete Switch Bars on Endurance Under Cyclic Loading
Lecture Notes in Civil Engineering
Klyuev, Sergey Vasil'yevich (Herausgeber:in) / Klyuev, Alexander Vasil'yevich (Herausgeber:in) / Bondarev, B. A. (Autor:in) / Kosta, A. A. (Autor:in) / Sychev, A. Y. (Autor:in)
International Conference Industrial and Civil Construction ; 2021 ; Belgorod, Russia
Proceedings of the International Conference Industrial and Civil Construction 2021 ; Kapitel: 43 ; 294-301
12.02.2021
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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