Research on Mechanical Properties of CFRP Confined Concrete-Filled Square Steel Tubular Under Bending-Torsion Load

WANG Qingli; ZHANG Yijing; PENG Kuan

doi:10.13204/j.gyjzG21121006

Volume 52 Issue 11

Nov. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(11): 181-188

LI Biao, ZHAO Na, ZHAO Jinjie, YANG Yongxin, TIAN Mi, LIU Xinyuan. Experimental Research on Influencing Factors of Tensile Properties of CFRP Plates[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(10): 164-168. doi: 10.13204/j.gyjzG23040405

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WANG Qingli, ZHANG Yijing, PENG Kuan. Research on Mechanical Properties of CFRP Confined Concrete-Filled Square Steel Tubular Under Bending-Torsion Load[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 181-188. doi: 10.13204/j.gyjzG21121006

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Research on Mechanical Properties of CFRP Confined Concrete-Filled Square Steel Tubular Under Bending-Torsion Load

doi: 10.13204/j.gyjzG21121006

1. School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
2. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China

Received Date: 2021-12-10

Abstract

Abstract

In order to study the mechanical properties of CFRP confined concrete-filled square steel tubular under bending-torsion load, based on the experimental study of mechanical properties of nine CFRP confined concrete-filled square steel tubular under bending-torsion load, the T-θ curve and failure mode of CFRP confined concrete-filled square steel tubular were simulated by using the finite element software ABAQUS, and the simulation results were compared with the experimental results. The results showed that the simulation results were in good agreement with the experimental results. On the basis of verifying the reliability of the model, the whole stress process and parameter analysis of the component were studied. On the basis of finite element simulation and test, the calculation expression of bearing capacity of CFRP, confined concrete-filled square steel tubular under bending-torsion load was proposed. The research showed that the bearing capacity of member increased significantly with the increase of concrete strength, steel yield strength and steel ratio, increased slightly with the increase of CFRP layers, and decreased slightly with the increase of moment ratio. The bearing capacity of specimen predicted by the proposed calculation expression was basically consistent with the test results.
- CFRP,
- concrete-filled square steel tube,
- mechanical properties under bending-torsion load,
- experimental study,
- finite element analysis

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References(19)

References

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