在循环负荷下,用CFF和SCCFL板加强的RC梁的柔性性能
V S Sujitha1, A Gautham Sriram1, S Raja1
1Center for Advanced Multidisciplinary Research and Innovation, Chennai Institute of Technology, Chennai, Tamil Nadu, 600069, India.
Scientific reports
|January 28, 2026
概括
碳纤维增强聚合物 (CFRP) 板增强了钢筋混凝土 (RC) 梁. 涂层碳纤维层板 (SCCFL) 在静态循环负荷下在强化方面表现优异,提高了承载能力和耐疲劳性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
背景情况:
- 碳纤维增强聚合物 (CFRP) 板提供高强度与重量比和耐腐蚀性.
- 碳复合纤维材料越来越多地用于加强受损的钢筋混凝土 (RC) 梁.
研究的目的:
- 试验评估RC梁的柔性性能,用两种CFRP强化.
- 为了比较碳纤维织物 (CFF) 和涂层碳纤维层 (SCCFL) 在静态循环负荷下的有效性.
主要方法:
- 测试了未加强的控制梁和用单层/双层CFF和SCCFL加强的梁.
- 应用静态循环负荷 (负荷控制) 直到显著损坏.
- 评估的最终负载能力,负载偏移行为,能量消耗,裂传播和刚性降解.
主要成果:
- 增强CFRP增加了RC梁的标称屈曲强度和疲劳阻力.
- 与CFF相比,SCCFL增强梁显示出更高的负载能力和能量消耗.
- 在静态循环负荷下,SCCFL的裂宽度较小,度保持更好.
结论:
- 强化CFRP有效地提高了RC梁的屈曲性能和耐疲劳性.
- 在承受动态或疲劳负荷的RC结构的改装中,SCCFL比CFF更有效.
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