FLEXURAL BEHAVIOR OF HIGH-STRENGTH CONCRETE BEAMS REINFORCED WITH CFRP BARS AND HIGH-STRENGTH STEEL BARS

doi:10.19936/j.cnki.2096-8000.20210428.002

Abstract

Abstract: Carbon fiber reinforced composite materials (CFRP) bars and high-strength steel reinforcement mixed in the high-strength concrete beams, can better exert the properties of the material and improve the utilization of building materials. In this paper, bending tests were carried out on high-strength concrete beams with CFRP bars and high-strength steel bars, and the theoretical calculation of its flexural capacity was derived. The results show that all the specimens exhibit typical ductile failure characteristics. Under the condition of the same nominal reinforcement ratio, compared with high-strength concrete beam with high-strength steel bars, the ultimate load of the mixed reinforced high-strength concrete beam is reduced by 15%, but the ultimate displacement is increased by 34%. Compared with high-strength concrete specimen, the yielding load and ultimate load of steel fiber high-strength concrete specimen are increased by 12.6% and 15.8%, respectively.

Key words: CFRP bars, high-strength steel bars, hybrid reinforcement, high-strength concrete beam, flexural behavior

CLC Number:

TB332

WANG Zuo-hu, SHAO Ming-zhe, LIU Du, YANG Ju. FLEXURAL BEHAVIOR OF HIGH-STRENGTH CONCRETE BEAMS REINFORCED WITH CFRP BARS AND HIGH-STRENGTH STEEL BARS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(4): 12-17.

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