使用高性能纤维增强混凝土复合材料提高固定端RC梁的柔性行为和柔性
Mohammad Kazem Sharbatdar1, Amir Ghods2, Khaled Sennah3
1Faculty of Civil Engineering, Semnan University, Semnan, Iran. msharbatdar@semnan.ac.ir.
Scientific reports
|November 21, 2025
概括
高性能纤维增强水泥复合材料 (HPFRCC) 显著提高了光束柔性和能量吸收. 在HPFRCC梁中添加钢纤维和优化杆间距导致结构性能大幅改善.
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
- 结构工程 结构工程
背景情况:
- 传统的混凝土梁在柔性和能量吸收方面存在局限性.
- 钢纤维有可能改善水泥复合材料的机械性能.
- 优化增强细节对于提高结构性能至关重要.
研究的目的:
- 为了研究钢纤维增强对固定端梁的行为的影响.
- 为了评估不同钢纤维含量和杆间距对梁性能的影响.
- 将高性能纤维增强水泥复合材料 (HPFRCC) 梁与传统混凝土梁的结构效率进行比较.
主要方法:
- 实验测试八个相同的固定端梁.
- 两个参考梁由常规混凝土制成.
- 六个梁用1%或2%的钢纤维增强,在两端附近有不同的脚间距.
主要成果:
- 添加钢纤维显著改善了光束柔性和能量吸收.
- 使用1%钢纤维的梁几乎增加了两倍的柔性.
- 使用2%钢纤维的梁表现出超过两倍的负载能力和三倍的能量柔性.
- 调整加载点进一步提高了强度和柔性.
- 与传统的混凝土梁相比,HPFRCC梁吸收了大约12%的更多能量,并将塑料链区域扩展了近50%.
结论:
- 与传统混凝土相比,使用钢纤维的HPFRCC在柔性和能量吸收方面提供了优越的性能.
- 优化纤维含量和间距是有效的,最大限度地提高HPFRCC的好处.
- 研究结果表明,HPFRCC是结构应用的有希望的材料,需要增强性和能量消耗.
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