[1]段莉斌,张亚芳.CFRP加固损伤钢筋混凝土梁抗冲击性能数值研究[J].深圳大学学报理工版,2023,40(2):155-162.[doi:10.3724/SP.J.1249.2023.02155]
　DUAN Libin and ZHANG Yafang.Numerical study on impact performance of damaged beams strengthened with CFRP[J].Journal of Shenzhen University Science and Engineering,2023,40(2):155-162.[doi:10.3724/SP.J.1249.2023.02155]
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CFRP加固损伤钢筋混凝土梁抗冲击性能数值研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第40卷
期数:
2023年第2期
页码:
155-162
栏目:
土木建筑工程
出版日期:
2023-03-15

文章信息/Info

Title:
Numerical study on impact performance of damaged beams strengthened with CFRP
文章编号:
202302004
作者:
段莉斌;  张亚芳
广州大学土木工程学院，广东广州 510006
Author(s):
DUAN Libin and ZHANG Yafang
School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong Province, P.R.China
关键词:
复合材料; 碳纤维增强复合材料; 损伤钢筋混凝土梁; 抗冲击性能; 动态响应; 数值模拟
Keywords:
composite materials;  carbon fiber reinforced plastics (CFRP);  damaged reinforced concrete beam;  impact resistance;  dynamic response;  numerical simulation
分类号:
TB333
DOI:
10.3724/SP.J.1249.2023.02155
文献标志码:
A
摘要:
为探究碳纤维增强复合材料（carbon fiber reinforced plastics， CFRP）加固损伤钢筋混凝土（reinforced concrete， RC）梁的抗冲击性能，利用有限元分析软件LS-DYNA，对不同CFRP加固方式下损伤梁的动态响应进行了数值模拟研究，并与物理试验结果进行对比验证．对加固梁的破坏模式、裂缝扩展规律和动态时程响应进行分析．结果表明，U型CFRP加固梁能显著抑制剪切斜裂缝的发展，大幅减小裂缝开展范围；在第1次冲击时，相较于未加固梁，平直型、U型和复合型CFRP加固梁的峰值冲击力分别提高了15.4 %、16.6 %和13.1 %，跨中峰值位移分别降低了4.8%、8.3%和10.1%；在第2次冲击时，U型和复合型CFRP加固梁仍表现出较好的抗冲击性能．研究结果可为CFRP加固损伤RC梁的优化设计提供参考．
Abstract:
In order to investigate the impact resistance of damaged reinforced concrete (RC) beams strengthened with carbon fiber reinforced plastics (CFRP), the dynamic responses of the damaged beams under different CFRP reinforcement methods are simulated using the finite element analysis software LS-DYNA and compared with the experimental results. The analysis results of failure pattern, crack propagation pattern and dynamic history of the strengthened beams show that the U-shaped CFRP strengthened beam can significantly inhibit the development of shear diagonal cracks and greatly reduce the crack propagation range. At the first impact, compared with the un-strengthened beam, the peak impact force of the straight, U-wrapping and composite CFRP strengthened beams increased by 15.4%, 16.6% and 13.1%, respectively, and the mid-span peak displacement decreased by 4.8%, 8.3% and 10.1%, respectively. At the second impact, the U-wrapping and composite CFRP strengthened beams remained good impact resistance. The study can provide a reference for the optimal design of damaged RC beams strengthened with CFRP.

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备注/Memo

备注/Memo:
Received: 2022- 12-03; Accepted: 2022-12-23; Online (CNKI): 2023-02-07
Foundation: National Natural Science Foundation of China (52278250, 51878190)
Corresponding author: Professor ZHANG Yafang. E-mail: zhangyafang2004@163.com
Citation: DUAN Libin, ZHANG Yafang. Numerical study on impact performance of damaged beams strengthened with CFRP [J]. Journal of Shenzhen University Science and Engineering, 2023, 40(2): 155-162.(in Chinese)
基金项目：国家自然科学基金资助项目（52278250，51878190）
作者简介：段莉斌（1990—），广州大学硕士研究生．研究方向：纤维增强混凝土细观力学性能．E-mail: zhangyafang2004@163.com
引文：段莉斌，张亚芳.CFRP加固损伤钢筋混凝土梁抗冲击性能数值研究［J］.深圳大学学报理工版，2023，40（2）：155-162.
更新日期/Last Update: 2023-03-30