Compression tests of C-FRCM jacket confined hollow section RC columns

Zhu, Ji-Hua; Ju, Chen; Feng, Yuanyue; Liu, Chengbin

doi:10.1016/j.istruc.2021.02.044

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…The FRCM method provided good results for the retrofitting of RC elements to obtain sufficient ultimate capacity, ductility, and stiffness. Although the FRCM method exhibits good results in strengthening/retrofitting, the effect on the ultimate capacity and ductility decreases when the number of FRCM layers increases [16][17][18][19][31][32][33][34][35][36]. The failure of the FRCM is caused by the slippage of the fibre inside the cementitious matrices rather than by fibre rupture.…”

Section: Introductionmentioning

confidence: 99%

Failure analysis of hybrid strengthened RC square column

2024

JCE

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This paper presents an analytical and experimental examination of reinforced concrete (RC) columns strengthened with a combined system of fibre-reinforced cementitious material (FRCM) and externally bonded fibre-reinforced plastics (EB-FRP). The proposed technique makes use of these advantages in enhancing the strength and minimising the premature failure of RC columns. Seven square RC columns were cast: one control column, four FRCM-strengthened columns, and two hybrid-strengthened columns. Two fibres, namely, carbon and glass fibres, were used. The columns were tested under an axial compression load in a loading frame. The ultimate strength, load vs. deformation, failure, and ductility were discussed to examine the failure and strengthening behaviour. The proposed method provided a higher confinement effect and increased capacity with fewer FRCM with EB-FRP than the other methods. Analytical predictions of the peak load were made and correlated with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Failure analysis of hybrid strengthened RC square column

2024

JCE

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“…Hollow section concrete columns have been used for off-shore structural columns, bridge piers, and electric poles due to their enhanced service performance, higher bending stiffness, and higher strength-weight ratios than solid section concrete columns [1][2][3][4][5][6][7][8]. In addition, due to the efficient utilization of materials, hollow section columns are of low cost and have internal space, thereby leading to an efficient construction system.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Design of Hollow Section, Centrifugal Concrete-Filled GFRP Tube Columns

Feng¹,

Zhu

Xie

et al. 2021

Buildings

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The compressive response of hollow section, centrifugal concrete-filled GFRP tube (HS-CFGT) members is examined experimentally and reported analytically in this paper. A total of 17 specimens separated into two groups were tested; the specimens in each group were of four different lengths and included thirteen straight columns and four tapered columns. The details of the test rigs, procedures as well as key test observations composed of ultimate-moment capacities, load-displacement curves, and failure modes were truthfully reported. The test results were analyzed to evaluate the influence of initial eccentricity on the structural performance. Therefore, the aim of this paper is: (1) to propose a proper coefficient, φe, reflecting the effect of initial eccentricity based on the Chinese design code; and (2) to determine a new confinement coefficient, kcc = 1.10, for centrifugal concrete confined by GFRP tubes. Comparisons of the present design codes and specifications of confined concrete members with test results on 17 full-scale tube columns are also presented. Accordingly, new design equations, whose predictions generally agree well with the test results, are recommended to estimate the compressive capacity of the proposed HS-CFGT columns.

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Local stability of glued laminated bamboo columns with box sections under axial compression

Su,

Zou

2024

Eur. J. Wood Prod.

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Compression tests of C-FRCM jacket confined hollow section RC columns

Cited by 8 publications

References 19 publications

Failure analysis of hybrid strengthened RC square column

Failure analysis of hybrid strengthened RC square column

Experimental Investigation and Design of Hollow Section, Centrifugal Concrete-Filled GFRP Tube Columns

Local stability of glued laminated bamboo columns with box sections under axial compression

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