Anti-implosion Performances of Steel Pipes Strengthened with CFRP Sheets

HUANG Hui; LU Sifang; ZHANG Xiang; JIA Bin; LU Yonggang

doi:10.13204/j.gyjzG20031209

Volume 52 Issue 1

Apr. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(1): 211-215

HUANG Hui, LU Sifang, ZHANG Xiang, JIA Bin, LU Yonggang. Anti-implosion Performances of Steel Pipes Strengthened with CFRP Sheets[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 211-215. doi: 10.13204/j.gyjzG20031209

Citation:

HUANG Hui, LU Sifang, ZHANG Xiang, JIA Bin, LU Yonggang. Anti-implosion Performances of Steel Pipes Strengthened with CFRP Sheets[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 211-215. doi: 10.13204/j.gyjzG20031209

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Anti-implosion Performances of Steel Pipes Strengthened with CFRP Sheets

doi: 10.13204/j.gyjzG20031209

1. Southwest University of Science and Technology, Mianyang 621010, China;
2. China Academy of Engineering Physics, Mianyang 621900, China

Received Date: 2020-03-12
Available Online: 2022-04-24

Abstract

Abstract

To study the anti-implosion performance of steel pipes strengthened with carbon fiber reinforced plastic (CFRP) sheets, a total of 8 specimens were tested under implosion impact. The weight of emulsion explosive and the number of CFRP sheets for strengthening were taken into account in the experiments. The experimental results demonstrated that, for specimens strengthened with the same number of CFRP sheets, the axial cracks on the pipe wall increased with the increase of the emulsion explosive weight. Besides, for these specimens, the CFRP layer failed from cracking failure to fragmentation failure with the increase of the emulsion explosive weight. Additionally, for specimens with the same emulsion explosive weight, the cracks on the pipe wall developed marginally in the axial direction, and then developed in the hoop direction, which demonstrated the anti-implosion effect of the strengthened CFRP layer. Finally, by conducting the mechanical analysis, a theoretical model was proposed for analyzing CFRP strengthened steel pipes under implosion impact.
- steel pipe,
- CFRP,
- anti-implosion performance,
- strengthening,
- failure mode

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References(19)

References

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