关于竹子-UHPC复合梁中局部绑定连接的短期行为的实验和分析研究
Kang Zhao1,2, Yang Wei1,2, Zicheng Yan1
1College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China.
Materials (Basel, Switzerland)
|March 27, 2025
概括
超高性能混凝土 (UHPC) 和竹复合梁显示了可持续建筑的前景. 优化剪切连接通过延迟UHPC-竹子分离和改善曲性能来提高结构完整性.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 需要为可持续的结构工程提供创新解决方案.
- 结合超高性能混凝土 (UHPC) 和竹子磨机提供了潜在的可能性.
- 了解竹子-UHPC接口的机械行为至关重要.
研究的目的:
- 为了研究竹木-UHPC复合梁的结构反应机制.
- 为了评估竹子-UHPC接口在不同剪切连接梯度下的机械行为.
- 评估剪切连接对复合梁的整体性能和完整性的影响.
主要方法:
- 设计了三个剪接梯度样本 (TS200/300/400).
- 对竹-UHPC复合剪切连接进行了单向压缩测试.
- 在复合体梁上进行四点曲试验,以评估损坏模式,负载偏移,刚性,滑动和起重.
主要成果:
- 复合梁的柔性性能表现出三个阶段:弹性,损伤发展和最终损伤.
- 界面滑动和升起显示了不对称的空间分布.
- 剪切关节度的增加延迟了UHPC-竹子的分离,提高了结构完整性.
结论:
- UHPC-竹复合梁显示出可持续建筑的巨大潜力.
- 优化剪接连接对于提高这些复合结构的性能和耐用性至关重要.
- 最终损伤模式包括UHPC的曲损伤和竹纤维损伤,这表明了进一步材料开发的领域.
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