Volume 40 Issue 5
May  2023
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DENG Mingke, CHEN Hui, LI Ruizhe, et al. Calculation of normal section bearing capacity of high-strength rebars reinforced high ductility fiber reinforced concrete members[J]. Acta Materiae Compositae Sinica, 2023, 40(5): 2926-2937. doi: 10.13801/j.cnki.fhclxb.20220707.003
Citation: DENG Mingke, CHEN Hui, LI Ruizhe, et al. Calculation of normal section bearing capacity of high-strength rebars reinforced high ductility fiber reinforced concrete members[J]. Acta Materiae Compositae Sinica, 2023, 40(5): 2926-2937. doi: 10.13801/j.cnki.fhclxb.20220707.003

Calculation of normal section bearing capacity of high-strength rebars reinforced high ductility fiber reinforced concrete members

doi: 10.13801/j.cnki.fhclxb.20220707.003
Funds:  National Natural Science Foundation of China (51878545); Major Scientific and Technological Innovation Plan of Xi'an (20191522415 KYPT015 JC017)
  • Received Date: 2022-05-09
  • Accepted Date: 2022-06-22
  • Rev Recd Date: 2022-06-20
  • Available Online: 2022-07-08
  • Publish Date: 2023-05-15
  • High ductile fiber-reinforced concrete (HDC) is characterized by its excellent deformation ability. The utilization ratio of high-strength steel bars (HSS) can be effectively increased when HSS is applied in reinforced HDC members. Based on the analytical model for the flexural capacity of reinforced concrete members in code GB/T 50010—2010, the flexural capacities of the HSS reinforced concrete members and HSS reinforced HDC members were derived, respectively. Besides, some key parameters such as the relative depth of compression zone for balanced failure, maximum and minimum reinforcement ratios, the range of compression zone height and the limitation of the axial load ratio of the HSS reinforced HDC members were derived, respectively. The effect of strength grade of the steel bars, strength grade of concrete and HDC on each parameter aforementioned were investigated, respectively. A calculation method for the bearing capacity of the HSS reinforced HDC members was proposed, and the average error between the calculated results and the experimental results is less than 12.5%.

     

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