玄武岩纤维网格水泥基复合材料加固RC梁抗剪性能试验  

Experiment on shear performance of RC beams strengthened with basalt fiber grid cement-based composites

作　　者：姜浩[1] 赵正文 JIANG Hao;ZHAO Zheng-wen(College of Civil Engineering,Jilin Jianzhu University,Changchun 130011,China;China Construction Eight Bureau Central China Construction Co.,Ltd.,Anhui Branch,Fuyang 236000,China)

机构地区：[1]吉林建筑大学土木工程学院,长春130011 [2]中建八局华中建设有限公司安徽分公司,安徽阜阳236000

出　　处：《吉林大学学报(工学版)》2025年第1期211-220,共10页Journal of Jilin University:Engineering and Technology Edition

基　　金：吉林省科技攻关重点项目(20180201079);吉林省发改委产业创新项目(2017C050-3);吉林省教育厅科学技术研究规划项目(JJKH20210300KJ)。

摘　　要：通过5根试验梁进行三点弯曲静力加载试验,研究了玄武岩纤维网格水泥基复合材料(Basalt fabric-reinforced cementitious matrix,B-FRCM)对钢筋混凝土梁的抗剪加固效果的影响,分析了试验梁的破坏形态以及玄武岩纤维增强复合材料(Basalt fiber reinforced polymer,BFRP)网格在受力过程中的抗剪贡献,并将试验结果与收集的计算模型进行对比。结果表明:采用B-FRCM加固后的RC梁抗剪承载力有较为明显的提升,提升幅值在24%~33%;B-FRCM加固可有效抑制斜裂缝发展,延缓极限状态的出现;在已有4种计算模型中,都高估了BFRP网格的抗剪贡献。Three-point bending static loading tests were carried out on five test beams to study the effect of basalt fiber fabric-reinforced cementitious matrix (B-FRCM) on the shear reinforcement effect of reinforced concrete beams.The failure modes of the test beams and the shear contribution of basalt fiber reinforced polymer (BFRP) grids in the process of loading were analyzed,and the test results were compared with the collected calculation models.The results show that the shear capacity of RC beams strengthened with B-FRCM is obviously improved,and the increase amplitude is 24%~33%.B-FRCM reinforcement can effectively inhibit the development of inclined cracks and delay the occurrence of limit state.In the four existing calculation models,the shear contribution of BFRP grids is overestimated.

关 键 词：结构工程 BFRP网格 工程水泥基复合材料(ECC) 箍筋间距 抗剪性能 计算模型 

分 类 号：TU375.1[建筑科学—结构工程]