徐福泉¹，李东彬¹，赵基达¹，黄竞强²
(1 中国建筑科学研究院，北京100013; 2 天津大学，天津300072)

[摘要] 目前，纤维材料已经广泛被应用在工程结构加固中。使用预应力碳纤维板加固受弯构件，可以充分发挥碳纤维板的强度，提高结构的正常使用性能和极限承载能力。进行了预应力碳纤维板加固钢筋混凝土梁的试验研究。考虑了二次受力的影响，分析了预应力碳纤维板加固钢筋混凝土简支梁的受弯承载性能，讨论了预应力碳纤维板加固梁的计算方法。
[关键词] 预应力；碳纤维板；加固

    Experimental research on reinforced concrete beams strengthened by prestressing CFRP plate
    Xu Fuquan¹,  LiDongbin¹,  Zhao Jida¹,  Huangjinqiang²
    (1 China Academy of Building Research, Beijing 100013, China; 2 Tianjin University, Tianjin 300072, China)

Abstract: At present, FRP material has been widely used in structure engineering. Prestressing CFRP can effectively improve the performance on serviceability lim/t state and limit state of bearing capacity.A comprehensive experiment study was done. The use of prestressing CFRP plate for strengthening the initially loaded beams was also investigated. The load-bearing characteristics of the repaired beams are discussed and the calculating method for the flexural ultimate load is also proposed.
Keywords: prestressing; CFRP plate; strengthen