TY - JOUR
T1 - Compressive behavior and analysis-oriented model of FRP-confined engineered cementitious composite columns
AU - Li, Shuai
AU - Chan, Tak Ming
AU - Young, Ben
N1 - Funding Information:
The research work presented in this paper was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China – Theme-based Research Scheme (Project No. T22-502/18-R).
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11/1
Y1 - 2022/11/1
N2 - A total of 18 specimens of fiber-reinforced polymer (FRP) confined engineered cementitious composite (ECC) were tested under axial compression in this study. Both monotonic loading and cyclic loading were considered. Effects of different FRP materials, glass FRP (GFRP) tube and carbon FRP (CFRP) jacket, as well as different FRP thicknesses were investigated. All the specimens exhibited the typical strain hardening behavior, indicating the effective enhancement of compressive strength and strain of ECC under FRP confinement. Failure modes, stress–strain behavior and dilation behavior were presented and analyzed. The FRP-confined ECC showed large ultimate axial strains, demonstrating the superior deformability and ductility performance. Design equations were developed to predict the ultimate compressive strength and strain. Based on the test results obtained from this study and other test results collected in the literature, an analysis-oriented model was proposed to predict the overall compressive stress–strain behavior of FRP-confined ECC columns.
AB - A total of 18 specimens of fiber-reinforced polymer (FRP) confined engineered cementitious composite (ECC) were tested under axial compression in this study. Both monotonic loading and cyclic loading were considered. Effects of different FRP materials, glass FRP (GFRP) tube and carbon FRP (CFRP) jacket, as well as different FRP thicknesses were investigated. All the specimens exhibited the typical strain hardening behavior, indicating the effective enhancement of compressive strength and strain of ECC under FRP confinement. Failure modes, stress–strain behavior and dilation behavior were presented and analyzed. The FRP-confined ECC showed large ultimate axial strains, demonstrating the superior deformability and ductility performance. Design equations were developed to predict the ultimate compressive strength and strain. Based on the test results obtained from this study and other test results collected in the literature, an analysis-oriented model was proposed to predict the overall compressive stress–strain behavior of FRP-confined ECC columns.
KW - Analysis-oriented model
KW - Compressive behavior
KW - Confinement
KW - Engineered cementitious composite (ECC)
KW - Fiber-reinforced polymer (FRP)
UR - http://www.scopus.com/inward/record.url?scp=85138090115&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2022.114869
DO - 10.1016/j.engstruct.2022.114869
M3 - Journal article
AN - SCOPUS:85138090115
SN - 0141-0296
VL - 270
JO - Engineering Structures
JF - Engineering Structures
M1 - 114869
ER -