（广东省建筑科学研究院集团股份有限公司， 广州 510500）

［摘要］通过对不同反拱荷载作用下试验梁开裂荷载和极限荷载的分析，提出了反拱法粘贴碳纤维布加固的最佳反拱荷载，在最佳反拱荷载作用下粘贴碳纤维布能使试验梁达到最佳开裂荷载和极限荷载。通过对比分析挠度数据，得到了反拱法粘贴碳纤维布加固能降低梁挠度，增加速率，延迟梁破坏，提高梁承载力等结论。

［关键词］反拱法； 碳纤维布加固； 最佳反拱荷载； 开裂荷载

中图分类号：TU375文献标识码：A文章编号：1002-848X(2020)06-0086-04

Experimental study on concrete beams strengthened with CFRP using reverse arch method

Lin Qihui， Wang Longhui

（Guangdong Provincial Academy of Building Research Group Co., Ltd., Guangzhou 510500, China）

Abstract:Based on the analysis of the cracking load and the ultimate load of the test beam under different reversed arch loads, the optimal reversed arch load for strengthening the test beam by CFRP was proposed. Under the optimal reversed arch load, pasting CFRP could make the test beam reach the optimal cracking load and ultimate load. Through the comparative analysis of deflection data, it is concluded that the reinforcement of CFRP using the reversed arch method can reduce the increase rate of beam deflection, delay the failure of the beam and improve the bearing capacity of the beam.

Keywords:reverse arch method; CFRP reinforcement; optimal reverse arch load; cracking load

作者简介：林启辉，硕士，高级工程师，Email:34448904@qq.com。