Research on Restoring Force Models of Reinforced Self-Stressing Steel Slag Concrete Columns Confined with Circular Steel Tubes

CUI Keran; YU Feng; CHEN Taiyao; QIN Yin; FANG Yuan; BU Shuangshuang

doi:10.13204/j.gyjzG22101204

Volume 54 Issue 7

Jul. 2024

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CUI Keran, YU Feng, CHEN Taiyao, QIN Yin, FANG Yuan, BU Shuangshuang. Research on Restoring Force Models of Reinforced Self-Stressing Steel Slag Concrete Columns Confined with Circular Steel Tubes[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 50-61. doi: 10.13204/j.gyjzG22101204

Citation:

CUI Keran, YU Feng, CHEN Taiyao, QIN Yin, FANG Yuan, BU Shuangshuang. Research on Restoring Force Models of Reinforced Self-Stressing Steel Slag Concrete Columns Confined with Circular Steel Tubes[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 50-61. doi: 10.13204/j.gyjzG22101204

Citation:

CUI Keran, YU Feng, CHEN Taiyao, QIN Yin, FANG Yuan, BU Shuangshuang. Research on Restoring Force Models of Reinforced Self-Stressing Steel Slag Concrete Columns Confined with Circular Steel Tubes[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 50-61. doi: 10.13204/j.gyjzG22101204

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Research on Restoring Force Models of Reinforced Self-Stressing Steel Slag Concrete Columns Confined with Circular Steel Tubes

doi: 10.13204/j.gyjzG22101204

College of Civil Engineering, Anhui University of Technology, Ma'anshan 243002, China

Received Date: 2022-10-12
Available Online: 2024-08-16

Abstract

Abstract

The seismic performence of ten reinforced self-stressing steel slag concrete columns confined with circular steel tubes and four reinforced steel slag concrete columns confined with circular tubes under quasi-static loading were tested. The effects of axial compression ratio, shear-span ratio, diameter-thickness ratio and expansion rate on the failure mode and hysteretic behavior were analyzed. The results showed that the flexural failure was observed in all specimens, and the damage was concentrated in the reserved gap. The fullness of the hysteretic curves increased as the decrease in the axial compression ratio, diameter-thickness ratio or the increase in the shear-span ratio and the expansion rate. The bearing capacity of the specimens increased with the increase of the axial compression ratio, diameter-thickness ratio and expansion rate, while the lateral deformation capacity decreased with the increase in axial compression ratio and diameter-thickness ratio. Subsequently, based on the experiment results, the simplified load-displacement skeleton curves were proposed considering the effects of axial compression ratio, shear-span ratio, diameter-thickness ratio and expansion rate. Moreover, according to the degraded tri-linear restoring force model, the hysteretic rules of the specimens were proposed, the restoring force model for reinforced self-stressing steel slag concrete columns confined with circular steel tubes was established, and the calculated results of the restoring force model were in good agreement with the experimental values.
- circular tube confined concrete,
- steel slag concrete,
- self-stressing concrete,
- hysteretic behavior,
- restoring force model

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References(36)

References

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