碳纤维复材加固钢管的抗内爆性能

黄辉; 路四方; 张祥; 贾彬; 卢永刚

doi:10.13204/j.gyjzG20031209

碳纤维复材加固钢管的抗内爆性能

doi: 10.13204/j.gyjzG20031209

1. 西南科技大学, 四川绵阳 621010;
2. 中国工程物理研究院, 四川绵阳 621900

基金项目:

国家自然科学基金项目（51908476）。

详细信息

作者简介:
黄辉,男,1987年出生,工学博士,副教授。电子信箱:huang871005@126.com

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出版历程
- 收稿日期: 2020-03-12
- 网络出版日期: 2022-04-24

Anti-implosion Performances of Steel Pipes Strengthened with CFRP Sheets

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

摘要

摘要: 为研究内爆荷载下碳纤维复材（Carbon Fiber Reinforced Plastic，CFRP）加固输油气钢管的受力性能，开展了8根CFRP加固钢管试件的内爆试验。试验中考虑了乳化炸药质量及碳纤维布层数的变化对加固钢管抗内爆性能及最终破坏模式的影响。结果表明：设置相同碳纤维布层数的试件，其管身轴向裂纹随乳化炸药量的增加而增长；同时，该类试件的CFRP加固层随乳化炸药量的增加由开裂剥离失效逐渐演化为碎片化剥离破坏；此外，随碳纤维布层数的增加，相同炸药量导致的钢管轴向裂纹扩展长度逐渐缩小，进而转变为环向扩展，表现出良好的限爆效果。最后，通过对CFRP加固钢管的受力分析，提出内爆荷载下的钢管管壁受力计算模型。
- 钢管 /
- 碳纤维增强复材 /
- 抗内爆性能 /
- 加固 /
- 破坏模式
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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