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Eccentric compression behavior of damaged inorganic-bonded bamboo composite columns repaired with combined CFRP and rebars

delete2026-05-08
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PRE
AI
H
Huajun Liu
F
Fei Wang *
X
Xin Zhang *
H
Haoran Qin
E
Ernian Zhao
DOI:10.1080/17452007.2026.2664645delete
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Abstract

Abstract

En 中文
To investigate rehabilitation methods for damaged inorganic-adhesive bamboo composite (InorgBam) columns and their post-rehabilitation eccentric compressive performance, this study proposed four rehabilitation schemes: Epoxy injection rehabilitation (EIR), CFRP hoop confinement rehabilitation (CHR), CFRP hoop-planar hybrid rehabilitation (CHPR), and CFRP hoop confinement-embedded rebar hybrid rehabilitation (CHRR). Eccentric compression tests were conducted on rehabilitated specimens with two slenderness ratios. The results indicate that: The failure mode of rehabilitated specimens was buckling failure, with bearing capacity recovery coefficients ranging from 0.88 to 1.40. Specimens rehabilitated using the CHRR method achieved the highest bearing capacity recovery ratio. All rehabilitation schemes significantly improved the ductility of damaged columns. The rehabilitated specimens also exhibited notable enhancements in both axial and lateral stiffness, with axial stiffness recovery coefficients ranging from 0.81 to 1.15 and lateral stiffness recovery coefficients ranging from 0.68 to 1.47. Among the four methods, the CHRR method provided the most substantial improvement in column stiffness. Based on experimental results and existing theoretical models, analysis methods were developed for predicting mid-span lateral deflection and eccentric compression bearing capacity of rehabilitated InorgBam columns.
Keywords:
Inorgbam column
Eccentric compression
Rehabilitation
CFRP
Embedded rebar

Journal

Architectural Engineering and Design Management cover
Architectural Engineering and Design Management
IF:
2.5
Papers:
183
Citations:
1.3K

Organization

S
Shandong Jianzhu University
Scholars:
928
Papers: 314
Citations: 3.3K
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