Experimental Study on Axial Compression of PVC-CFRP Restrained Profile Concrete Medium-Length Columns

DONG Yunlong; TAO Qinglin; MA Qiang; KONG Jiong; GAO Zhijie

doi:10.3724/j.gyjzG25061803

Volume 56 Issue 10

Oct. 2026

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DONG Yunlong, TAO Qinglin, MA Qiang, KONG Jiong, GAO Zhijie. Experimental Study on Axial Compression of PVC-CFRP Restrained Profile Concrete Medium-Length Columns[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 104-113. doi: 10.3724/j.gyjzG25061803

Citation:

DONG Yunlong, TAO Qinglin, MA Qiang, KONG Jiong, GAO Zhijie. Experimental Study on Axial Compression of PVC-CFRP Restrained Profile Concrete Medium-Length Columns[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 104-113. doi: 10.3724/j.gyjzG25061803

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Experimental Study on Axial Compression of PVC-CFRP Restrained Profile Concrete Medium-Length Columns

doi: 10.3724/j.gyjzG25061803

1. College of Civil Engineering, Anhui University of Technology, Ma'anshan 243002, China;
2. Anhui Jingbai Xinyuan Building Technology Co., Hefei 230093, China;
3. Technology Center, China MCC17 Group Co., Ltd., Ma'anshan 243000, China

Received Date: 2025-06-18
Available Online: 2026-11-06

Abstract

Abstract

Through the axial compression test of nine PVC-CFRP restrained steel and concrete medium-length columns， the damage process， damage pattern， load-displacement curve and load-strain curve of the specimens were obtained， and the effects of factors such as slenderness ratio， concrete strength grade， CFRP strip spacing ratio and steel content on the axial compression performance were investigated， and the synergistic effect among materials under axial compression loading of the specimens was analyzed. The results show that： decreasing the aspect ratio， increasing the concrete strength， decreasing the CFRP strip spacing ratio， and increasing the steel content can effectively improve the load carrying capacity of the specimens； the ultimate axial strain increases with the increase of the aspect ratio and is inversely proportional to the other influencing factors， among which， the effect of the CFRP strip spacing ratio is the most significant， and when the spacing ratio is increased from 2 to 3， the ultimate axial strain decreases by 22.1%； the PVC pipe， CFRP strips and steel sections have basically the same trend of strain change， indicating that the constituent materials of PVC-CFRP restrained section steel concrete columns can work well together in the stressing process.
- PVC-CFRP pipe,
- profiled concrete,
- medium-length column,
- axial compression,
- strain analysis

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References(27)

References

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