Experimental Research on Seismic Performance of CFRP Reinforced Recycled Aggregate Concrete Composite Torsional Columns

XIE Qiang; SHAO Yongjian; ZHU Kaiji

doi:10.3724/j.gyjzG23042605

Volume 54 Issue 6

Jun. 2024

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XIE Qiang, SHAO Yongjian, ZHU Kaiji. Experimental Research on Seismic Performance of CFRP Reinforced Recycled Aggregate Concrete Composite Torsional Columns[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(6): 118-129. doi: 10.3724/j.gyjzG23042605

Citation:

XIE Qiang, SHAO Yongjian, ZHU Kaiji. Experimental Research on Seismic Performance of CFRP Reinforced Recycled Aggregate Concrete Composite Torsional Columns[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(6): 118-129. doi: 10.3724/j.gyjzG23042605

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Experimental Research on Seismic Performance of CFRP Reinforced Recycled Aggregate Concrete Composite Torsional Columns

doi: 10.3724/j.gyjzG23042605

School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China

Received Date: 2023-04-26
Available Online: 2024-06-24

Abstract

Abstract

In order to study the seismic performance of CFRP reinforced recycled aggregate concrete composite torsional columns, two specimens reinforced by CFRP and one specimen not reinforced by CFRP were designed and carried out pseudo-static tests under composite torsional conditions, and the strain, crack development law and failure mode were analyzed. The results showed that two CFRP reinforced specimens had undegone torsional failure, and one unreinforced specimen had undergone bending and torsional failure.CFRP reinforced column specimens had better seismic performance, the peak torque and ductility coefficient increased by 44.68% and 71.41%, respectively, and the strength attenuation, stiffness degradation, energy dissipation and cumulative damage were significantly improved.The ratio of longitudinal reinforcement has little effect on the seismic performance of the specimen, the peak torque is increased by 5.45%, and the stiffness degradation and cumulative damage were improved.
- CFRP reinforcement,
- recycled aggregate concrete column,
- experimental research,
- ratio of longitudinal reinforcement,
- combined torsion,
- seismic performance

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References(15)

References

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