（1 广西岩土力学与工程重点实验室， 桂林 541004； 2 桂林理工大学土木与建筑工程学院， 桂林 541004；3 贺州学院建筑工程学院， 贺州 542899）

［摘要］针对现有加固方法中的诸多缺点，提出使用预应力加筋碳纤维板(SCFRP)加固混凝土梁的新技术。对预应力加筋碳纤维板加固混凝土梁进行试验研究，主要讨论试验梁的加固工艺和碳纤维板的张拉控制应力等参数对加固性能的影响，以未加固梁为参考梁，研究加筋碳纤维板与普通碳纤维板加固混凝土梁效果的异同。试验结果表明，预应力加筋碳纤维板加固成本低、锚具效果优且能较好地提高结构变形能力，达到极限拉伸应变从而充分发挥其作用。此外，该技术使高强钢丝与碳纤维丝在加固工程中优势互补，形成一种性能优良、成本较低且施工方便的新型加固材料，值得在实际工程中大力推广应用。

［关键词］预应力； 高强钢丝； 试验研究； 加筋碳纤维板

中图分类号：TU378文献标识码：A文章编号：1002-848X(2019)24-0102-05

Experimental study and bearing capacity calculation on concrete beam reinforced with prestressed reinforced carbon fiber plate

Zhu Wanxu1，2, Deng Lijiao1，2，3, Sang Runhui1，2, Li Changle1，2

（1 Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin 541004, China;2 College of Civil Engineering and Architecture, Guilin University of Teachnology, Guilin 541004, China; 3 College of Civil Engineering and Architecture, Hezhou University, Hezhou 542899, China）

Abstract:In view of the shortcomings of the existing reinforcement methods, a new technology for reinforced concrete beams with  (SCFRP) was proposed. The experimental research on reinforced concrete beams with prestressed reinforced carbon fiber plates was carried out. The reinforcement technology of the experimental beams and the influence of the parameters such as the tension control stress of the CFRP on the reinforcement performance were mainly discussed. Taking the unreinforced beams as the reference beams, the similarities and differences between the SCFRP and the ordinary CFPR on the effect of reinforced concrete beams were studied. The experimental results show that the prestressed SCFRP has the advantages of low reinforced cost, excellent anchorage effect and it can improve the deformation ability of the structure to reach the ultimate tensile strain and give full play to its role. In addition, this technology makes the advantages of high-strength steel wire and carbon fiber wire complementary in reinforcement engineering and forms a new reinforcement material with excellent performance, low cost and convenient construction, which is worth popularizing and applying in practical engineering.

Keywords:prestress; high strength steel wire; experimental study; reinforced carbon fiber plate

*国家自然科学基金（51768014），广西科技计划科技基地和人才专项项目(桂科AD16380017)。

作者简介：朱万旭，博士，教授级高级工程师，博士生导师， Email:zhuwanxu@vip.163.com。