粘贴纤维复合材进行混凝土受弯构件正截面加固技术分析  

Technical Analysis of Strengthening the Normal Section of FlexuralConcrete Members by Bonding Fiber Composite Material

作　　者：徐斌 刘珅 王佳姿 XU Bin;LIU Shen;WANG Jia-zi(China IPPR International Engineering Co.Ltd.,Beijing 100089,China;Yunnan Provincial Affairs Development Co.Ltd.,Kunming 650000,China)

机构地区：[1]中国中元国际工程有限公司,北京100089 [2]云南省社会事业发展有限公司,昆明650000

出　　处：《工程建设与设计》2025年第1期13-15,共3页Construction & Design for Engineering

摘　　要：列举了现有规范对纤维复合材加固混凝土构件承载力提高幅度的限值,并对纤维复合材加固混凝土构件受弯计算的4种破坏形态及其控制措施进行了分析。总结了抗弯加固时需要控制的内容以及应对措施,提出了混凝土受弯构件正截面加固承载力的提高幅度需要根据初始受压区高度、截面抗剪能力、挠度和裂缝等因素综合考虑。提出了当受弯构件混凝土受压区高度x<2a'时,计算加固截面时,应采用对受压钢筋取矩的方式。This article lists the limit values for the improvement of the bearing capacity of fiber-reinforced concrete components in existing specifications,and analyzes the four failure modes and control measures for the bending calculation of fiber composite-reinforced concrete components.Summarizes the contents that need to be controlled and corresponding measures during bending reinforcement,and proposes that the increase in the bearing capacity of reinforced concrete flexural members should be comprehensively considered based on factors,such as the initial compression zone height,section shear resistance,deflection,and cracks.It is proposes that when the height of the concrete compression zone in a bending component is x<2a',the method of taking the moment of the compressed steel bars should be used to calculate the reinforcement section.

关 键 词：纤维复合材加固 混凝土构件 受弯承载力 提高幅度 

分 类 号：TU37[建筑科学—结构工程]