Experimental study on axial compression performance of new-type BFRP-confined square concrete columns

doi:10.19936/j.cnki.2096-8000.20230928.016

Abstract

Abstract: Aiming at the new-type BFRP based on epoxy silicate resin, the confined effect on the concrete structure was studied by model test and theoretical analysis. The influence of the wrapping form and the number of layers on the mechanical properties of the square concrete column was analyzed. The results show that the development trend of the loading curve of specimens confined by BFRP and CFRP is basically the same, but the confined effect of BFRP is relatively poor. Under the two layers of full coverage, the axial compression bearing capacity of the BFRP-confined specimens and the CFRP-confined specimens is increased by 28.45% and 64.73%, respectively. The existing specifications have good applicability to CFRP reinforced specimens, but poor applicability to BFRP. The calculation model proposed in this paper can accurately predict the axial compression bearing capacity of new-type BFRP-confined square concrete columns.

Key words: new-type BFRP, reinforcement, axial compression test, confinement mechanism, bearing capacity model, composites

CLC Number:

TB332

SHEN Huijun, ZHENG Hehui, ZHANG Feng, LI Ziqiang. Experimental study on axial compression performance of new-type BFRP-confined square concrete columns[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(9): 106-111.

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