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Advances in Concrete Construction Volume 10, Number 2, August 2020 , pages 151-159 DOI: https://doi.org/10.12989/acc.2020.10.2.151 |
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Experimental study on the stress-strain relation of PVC-CFRP confined reinforced concrete column subjected to eccentric compression |
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Feng Yu, Zhengyi Kong, Deguang Li and Quang-Viet Vu
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| Abstract | ||
| An experimental study on the stress-strain relation of PVC-CFRP confined reinforced concrete columns subjected to eccentric compression was carried out. Two parameters, such as the CFRP strips spacing and eccentricity of axial load, were considered. The experimental results showed that all specimens failed by compressive yield of longitudinal steel bar and rupture of CFRP strips. The bearing capacity of specimen decreases as the eccentricity or the CFRP strips spacing increases. The stressstrain relation of specimens undergoes two stages: parabolic and linear stages. In the parabolic stage, the slope of stress-strain curve decreases gradually as the eccentricity of axial loading increases while the CFRP strips spacing has little effect on the slope of stress-strain curve. For the linear stage, the slope of stress-strain curve decreases as the eccentricity of axial load or the CFRP strips spacing increases. A model for predicting the stress-strain relation of columns under eccentric compression is proposed and it agrees well with various test data. | ||
| Key Words | ||
| PVC-CFRP confined concrete; eccentric compression; failure mode; stress-strain relation | ||
| Address | ||
| Feng Yu, Zhengyi Kong, Deguang Li: Department of Civil Engineering and Architecture, Anhui University of Technology, Ma\'anshan 243032, China Quang-Viet Vu: Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam | ||
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