Reliability - based analysis of the flexural strength of concrete beams reinforced with hybrid BFRP and steel rebars

• Autorzy: Zhang Wei , Liu Xiang , Huang Yiqun , Tong Ming-Na

Identyfikatory

DOI

10.1007/s43452-022-00493-7

• Języki publikacji: EN

Abstrakty

EN

The durability of reinforced concrete structures has always been an important problem in civil engineering because steel rebars rust easily. Therefore, fiber-reinforced polymer (FRP) rebars possessing good corrosion resistance, low weight, and easy construction has become a substitute for reinforcement. However, since FRP rebar has a low elastic modulus and is a brittle failure material, large deflections and cracks occur in the FRP concrete beam with no obvious warning before failure. A hybrid reinforced concrete beam that combines the advantages of steel rebar and FRP rebar is a good structural form. The reliability of hybrid reinforced beams must be analyzed to ensure their safety. A flexural performance test of the hybrid basalt FRP (BFRP)–steel-reinforced beam was performed, the failure mode was explored, and the numerical models were established. The accuracy of the models was verified by comparing them with the test results. The numerical models were used to establish a database (630 cases) that was combined with existing research results (33 cases), to obtain the statistics of the uncertainty of the prediction model. Reliability analysis of a large-scale design space was conducted to calibrate the BFRP. Finally, the average deviation from the target reliability index suggested that the values of the partial coefficient of the materials range from 1.2 to 1.4.

Słowa kluczowe

EN

reliability; hybrid reinforced; BFRP; flexural; linear moment; Monte Carlo simulation

PL

niezawodność; zginanie; metoda Monte Carlo

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 4
• Strony: art. no. e171, 2022
• Opis fizyczny: Bibliogr. 44 poz., fot., rys., tab., wykr.

Twórcy

autor

Zhang Wei

• School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China
• Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague 19000, Czech Republic

autor

Liu Xiang

• School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China

autor

Huang Yiqun

• School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China

autor

Tong Ming-Na

• School of Civil Engineering, Zhengzhou University, 100 Kexuedadao Rd, Zhengzhou 450001, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)