The traditional Desai model fails to calculate the bearing capacity of a beam effectively, which could lead to its failure. In order to solve this problem successfully, a new RAV analysis model is proposed to analyze the stress behavior of steel fiber reinforced concrete beams. The vertical effect of steel fiber reinforced concrete (SFRC) beams is analyzed by means of a rod element simulation. The analysis results of the beam large displacement effect are determined using multi-stage displacements. Based on the above two physical quantities, the stress finite element equation is determined. According to the finite element equation, the reliability and response characteristics of the beam are analyzed, and a new RAV behavior analysis model is formulated. The results show that compared with the Desai model, the new RAV model can improve the accuracy of calculating the beam bearing capacity limit by about 40% under the conditions of high, medium and low nonlinear stresses.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 74–84, April, 2021.
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Luo, D. Stress Behavior Analysis Model of Steel Fiber Reinforced Concrete Beam. Russ Phys J 64, 643–656 (2021). https://doi.org/10.1007/s11182-021-02377-4
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DOI: https://doi.org/10.1007/s11182-021-02377-4