摘要
碳纤维增强复合材料(简称"碳纤维复材")网格是一种新型高性能的工程结构材料。通过拔出试验,研究碳纤维复材网格在混凝土中的黏结性能和锚固长度。共计对15个碳纤维复材网格拔出试件进行静力荷载试验,试验参数包括混凝土强度、有无横向网格和内埋横向网格数。在整个加载过程中,量测了碳纤维复材网格与混凝土之间的加载端滑移和自由端滑移。试验结果表明:混凝土强度对黏结性能的影响很小,横向网格的机械咬合作用是主要的传力方式,内埋横向网格数的增加会提高黏结刚度、减小滑移量。最后在试验研究的基础上,给出了初步的设计建议。
Carbon fiber reinforced polymer （CFRP） grids reinforcement is a new type of high performance engineering structure material. The bond behavior and anchorage length of CFRP grids reinforcement were investigated using a pull out test method. A total of 15 pull out specimens of CFRP grids reinforcement were tested under monotonic static loading, and the experimental parameters included the concrete strength, with or without transverse bars, and the number of embedded transverse bars. The slips between the CFRP grids and the concrete were measured at both the loaded end and the free end during the whole loading process. The test results indicated that firstly the concrete strength had little influence on the bond behavior, secondly the wedge action of the transverse bars was very important for transferring force, thus increase in number of embedded transverse bars increased the bond stiffness and reduced the slippage. Based on this experimental investigation, the preliminary design suggestions were also proposed.
出处
《工业建筑》
CSCD
北大核心
2016年第5期18-22,共5页
Industrial Construction
基金
国家自然科学基金项目(51478488)
