Research on Mechanical Properties of Concrete Filled Circular CFRP-steel Tubular Under Compression and Torsion

CHEN Penghui; WANG Qingli

doi:10.13204/j.gyjzG20090604

Volume 52 Issue 1

Apr. 2022

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CHEN Penghui, WANG Qingli. Research on Mechanical Properties of Concrete Filled Circular CFRP-steel Tubular Under Compression and Torsion[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 17-25. doi: 10.13204/j.gyjzG20090604

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CHEN Penghui, WANG Qingli. Research on Mechanical Properties of Concrete Filled Circular CFRP-steel Tubular Under Compression and Torsion[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 17-25. doi: 10.13204/j.gyjzG20090604

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Research on Mechanical Properties of Concrete Filled Circular CFRP-steel Tubular Under Compression and Torsion

doi: 10.13204/j.gyjzG20090604

CHEN Penghui¹,
WANG Qingli^{2,3
,
,}

1. School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, China;
2. College of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China;
3. College of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Received Date: 2020-09-06
Available Online: 2022-04-24

Abstract

Abstract

For deeply understanding of the mechanical properties of concrete filled circular carbon fiber reinforced polymer (CFRP) steel tubular under compression and torsion, 8 concrete filled CFRP-steel tubular members under compression and torsion were conducted. The results of test observation, the torque-rotation angle curves, the coordination between steel tube and carbon fiber, and plane across-section assumption were analyzed. ABAQUS was used to simulate the torque-rotation angle and the failure modes. The simulating results coincided well with the test results. Based on above-mentioned study results, the whole loading process analysis was carried out. The results of analysis of parameters showed that the transverse carbon fiber layer, the concrete strength, and steel ratio had none obvious influence on the torque-rotation angle curves. Increasing the transverse carbon fiber layer, steel yield strength, concrete strength and steel ratio could improve the bearing capacity of members. The proper axial compression ratio could also increase the bearing capacity. Based on the performance analysis and a large number of calculation results, the equation for the bearing capacity of concrete filled circular CFRP-steel tubular under compression and torsion was proposed, the calculated results were in good agreement with the experimental results.
- circular CFRP-steel tubular,
- in-filled concrete,
- mechanical properties under compression and torsion,
- experimental study,
- finite element simulation,
- bearing capacity

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References(36)

References

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