Comparison Study of Torsional Strength of Steel Fiber Reinforced-Concrete Beams With Various Design Codes

Abstract

There has been no calculation of torque capacity using a specific code on SFRC beams. Therefore, this paper describes efforts to compare capacity analysis studies of SFRC beams with ACI Code 318-19 design, CSA A23.3:19, SNiP, Eurocode 2, and modification of ACI Code 318-19. A total of 85 specimens were adopted from 16 previous study groups, and the torsional strength was compared with the proposed equation by modifying and applying it to ACI code 318-19. The proposed formula, by adding the effect of steel fiber, increases the contribution of steel fiber to the longitudinal and transverse reinforcement. After the torsional strength of the proposed formula is obtained, it is compared with the four design codes of torsional strength analysis without the influence of steel fiber to determine the accuracy of the prediction of torsional strength, which is close to the results of experimental testing. From the results presented, each strength design prediction varies significantly in mean ratio, standard deviation, and coefficient of variation. Comparing the five concluded that the design obtained using the modified design code ACI 318-19 and CSA A23.3:19 provides better accuracy. The results of Eurocode 2 provide an average ratio of 1.62, the largest among the others.