预应力加筋碳纤维板加固受损混凝土梁的试验研究  

Experimental study on strengthening damaged concrete beams with prestressed reinforced carbon fiber plates

作　　者：刘平伟 张胜利 刘锋涛 朱万旭[2] 刘新权 LIU Pingwei;ZHANG Shengli;LIU Fengtao;ZHU Wanxu;LIU Xinquan(School of Civil and Architectural Engineering,Liuzhou Institute of Technology,Liuzhou 545616,China;College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China;The First Engineering Co.,Ltd.,the CCCC Third Highway Engineering Co.,Ltd.,Beijing 100012,China)

机构地区：[1]柳州工学院土木建筑工程学院,广西柳州545616 [2]桂林理工大学土木与建筑工程学院,广西桂林541004 [3]中交三公局第一工程有限公司,北京100012

出　　处：《混凝土》2021年第4期152-156,共5页Concrete

基　　金：广西高校中青年教师基础能力提升项目“预应力碳纤维板加固受损混凝土梁的试验研究”(KY2016YB843,2018KY0874,2018KY0878,2018KY0880);国家自然科学基金(51768014)。

摘　　要：为研究预应力加筋碳纤维板(SCFRP)在实际加固工程中的应用情况,选用受损的混凝土梁和完好的试验梁分别进行加载,分析加固后损伤混凝土梁和无损混凝土梁的承载能力特性,并与普通预应力碳板加固梁进行对比。通过试验研究发现,预应力加筋碳纤维板加固受损混凝土梁能有效封闭梁的裂缝,提高梁的承载能力,在屈服荷载后期,梁的变形能力大,延性性能较好,碳纤维板的利用效率高。和普通预应力碳纤维板加固相比,预应力加筋碳纤维板加固效果优势明显,锚固可靠,值得在实际加固工程中大力推广使用。For studying the prestressed reinforced carbon fiber board(SCFRP)in the actual application of the reinforcement engineering,it selects the damaged concrete beam and intact test beam respectively to load,the bearing capacity characteristics of the damaged concrete beam and non-destructive concrete beam after reinforcement are analyzed and compared with the ordinary prestressed carbon plate reinforced beam.The experimental results show that the prestressed reinforced carbon fiber plate can effectively close the cracks of the damaged concrete beam and improve the bearing capacity of the beam.At the later stage of yield load,the deformation capacity of the beam is large,the ductility performance is good,and the utilization efficiency of the carbon fiber plate is high.Compared with the ordinary prestressed carbon fiber plate reinforcement,the prestressed reinforced carbon fiber plate reinforcement effect is obviously superior,the anchorage is reliable,and it is worth popularizing in the actual reinforcement project.

关 键 词：预应力 加筋碳纤维板 受损混凝土梁 试验研究 

分 类 号：TU528.01[建筑科学—建筑技术科学]