Experimental study on seismic performance of polyvinyl alcohol fiber reinforced cementitious composite medium-length columns with low axial pressure ratio

WANG Yuqing; XIE Chunyan; LIU Shuguang; XU Xiangyang; MENG Suyalatu

doi:10.13801/j.cnki.fhclxb.20210310.001

Volume 38 Issue 12

Dec. 2021

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WANG Yuqing, XIE Chunyan, LIU Shuguang, et al. Experimental study on seismic performance of polyvinyl alcohol fiber reinforced cementitious composite medium-length columns with low axial pressure ratio[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4337-4348. doi: 10.13801/j.cnki.fhclxb.20210310.001

Citation:

WANG Yuqing, XIE Chunyan, LIU Shuguang, et al. Experimental study on seismic performance of polyvinyl alcohol fiber reinforced cementitious composite medium-length columns with low axial pressure ratio[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4337-4348. doi: 10.13801/j.cnki.fhclxb.20210310.001

Citation:

WANG Yuqing, XIE Chunyan, LIU Shuguang, et al. Experimental study on seismic performance of polyvinyl alcohol fiber reinforced cementitious composite medium-length columns with low axial pressure ratio[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4337-4348. doi: 10.13801/j.cnki.fhclxb.20210310.001

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Experimental study on seismic performance of polyvinyl alcohol fiber reinforced cementitious composite medium-length columns with low axial pressure ratio

doi: 10.13801/j.cnki.fhclxb.20210310.001

1.
School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
2.
School of Mining and Technology, Inner Mongolia University of Technology, Hohhot 010051, China
3.
National Nuclear Power Planning and Design Institute, Beijing 100095, China

Received Date: 2021-01-11
Accepted Date: 2021-03-01

Available Online: 2021-03-10

Publish Date: 2021-12-01

Abstract

Abstract

Previous studies on the seismic performance of polyvinyl alcohol fiber reinforced cementitious compo-site (PVA/C) columns mostly focused on short columns, and PVA/C was usually set locally in the joint and its adjacent parts. Based on this, low-cycle reversed loading tests on medium-length PVA/C columns with low axial pressure ratio were carried out, and PVA/C was set along the full height of the column. Test variation parameters are fiber volume fraction ρ_f and volume-stirrup ratio ρ_v. The following conclusions can be drawn through the test: Bending failure occurs in all specimens. When ρ_f and ρ_v increase within the test condition range respectively, the crack controlling ability, ductility, section rotation ability and energy dissipation ability of specimens are improved. While the rate of stiffness degradation and decay of bearing capacity are decreased. The increase of ρ_f can greatly improve the cracking load of specimens, but has little effect on the peak load. When ρ_f increases from 0 vol% to 2 vol%, the displacement ductility coefficient, the energy consumption ratio and the cracking load increase 52.9%, 112.3% and 51.1%, respectively. The PVA/C columns can maintain good seismic performance and crack morphology even if the stirrup ratio is reduced. According to the experimental data of this paper and other relevant literature, the relationship between displacement ductility coefficient and ρ_f and ρ_v is obtained. Differences of seismic performance of various PVA/C columns were summarized.
- polyvinyl alcohol fiber reinforced cementitious composite (PVA/C),
- seismic performance,
- medium-length column,
- low axial pressure ratio,
- fiber volume fraction,
- stirrup ratio
Long Abstrsct
Innovation Points

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References(27)

References

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