薄型混凝土板的柔性行为,用表面嵌的网格式碳纤维复合材料加强
Kyung-Min Kim1, Sung-Woo Park1, Kyung-Jae Min2
1Seismic Safety Center, Korea Conformity Laboratories (KCL), 187, Saneop-ro 155 Beon-gil, Gwonseon-gu, Suwon-si 187, Gyeonggi-do, Republic of Korea.
Polymers
|February 13, 2025
概括
碳网格是一种纤维增强聚合物 (FRP),增强了混凝土板的强度和刚性. 有效深度显著影响曲行为,一个新的负载偏移曲线模型的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 结构工程 结构工程
背景情况:
- 纤维增强聚合物 (FRP) 正在成为混凝土增强中传统钢筋的可行替代品.
- 碳FRP (CFRP) 网格,特别是那些带有浮雕表面的网格,在具体应用中提供了潜在的优势.
- 了解用CFRP网格增强的混凝土的柔性行为对于结构设计至关重要.
研究的目的:
- 实验性地研究用网格式碳FRP (CFRP) 增强的单向混凝土板的柔性行为.
- 为了评估有效深度,CFRP网格层和混凝土压力强度对曲性能的影响.
- 为模拟CFRP钢筋混凝土的行为提出和验证负载偏移曲线.
主要方法:
- 用浮雕表面碳网格丝增强的混凝土板进行实验性研究.
- 实验参数的系统变化:有效深度,碳网格层的数量和混凝土的压力强度.
- 裂纹模式的分析,以评估混凝土-CFRP结合,负载偏移数据和屈曲强度比率.
主要成果:
- 压CFRP线条的表面印显著改善了混凝土的粘合.
- 提高有效深度,CFRP层和混凝土强度导致了更高的最大负载和刚度.
- 有效深度对曲行为产生了最实质性的影响;实验和计算的曲强度比率从0.74到1.22.
结论:
- 碳网格增强增强了混凝土板的弹性性能.
- 一个拟议的三线性负载偏移曲线准确地模拟了碳网格钢筋混凝土成员的曲行为.
- 该研究为CFRP网格在混凝土结构中的设计和应用提供了宝贵的见解.
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