Analysis of confinement effectiveness coefficient of CFRP-confined concrete columns in marine environment

doi:10.19936/j.cnki.2096-8000.20250628.015

Abstract

Abstract: In order to investigate the effect coefficient of CFRP-confined concrete columns in marine environment, five groups of 27 specimens were subjected to axial compression tests in both normal and marine environments. The failure mode, axial deformation, and ultimate failure load of each group were compared and analyzed, and validity coefficient of the CFRP-confined concrete columns theoretical model in the marine environment was calculated. The results showed that in the marine environment, the bonding effect between the CFRP sheet and concrete column is enhanced, leading to a change in the failure mode of the concrete column. Importantly, the substantial enhancement in the ultimate bearing capacity of concrete columns achieved by increasing the number of CFRP sheets remains unaffected by seawater corrosion conditions. Furthermore, the effectiveness coefficient of the constraint in the marine environment remains applicable to the theoretical model.

Key words: CFRP sheets, concrete columns, marine environment, axial compression performance, destruction form, confinement effectiveness coefficient

CLC Number:

TB332

GAO Jing, WU Shuhang, ZHOU Yueming. Analysis of confinement effectiveness coefficient of CFRP-confined concrete columns in marine environment[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(6): 109-117.

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