FRP加固二次受力RC约束梁抗剪性能对比试验探析  

Comparative Test Analysis over Shear Performance of FRP Reinforcement Secondary Load RC Restrained Beams

作　　者：杨汝俊 鲍林 孙凯 

机构地区：[1]山东博物馆,山东济南250014 [2]枣庄市市政园林管理局,山东枣庄277100 [3]济南银丰鸿福置业有限公司,山东济南250014

出　　处：《工程质量》2016年第6期21-25,共5页Construction Quality

摘　　要：行业对FRP加固钢筋混凝土约束梁抗剪性能的研究相对较少,为切合加固工程应用,本试验对10根钢筋混凝土约束梁进行剪切"预裂",卸荷后分别采用CFRP、GFRP加固,进行二次受力破坏试验。观测试验梁的破坏全过程;对比破坏形态、纤维应变和受力特点,分析粘贴方式、弯矩比以及预损程度对试验梁加固效果的影响,以期为结构可靠性鉴定提供实践基础,对于结构加固设计具有一定的参考价值。The industry less focuses on studying the shear performance of FRP reinforcement RC restrained beams. In the test,ten RC restrained beams were sheared and pre-split in line with application of reinforcement project,and after unloading,reinforcing them by CFRP and GFRP respectively,thus beginning secondary load destructive test so that the whole destructive process of test beams could be observed. By comparing failure mode,fiber strain and loading features and by analyzing the influence of stickup method,bending moment ratio and pre-loss degree on reinforcement effect of test beams,experimental basis for structural reliability appraisal and reference value for structural strengthening design could be provided.

关 键 词：纤维增强复合材料 加固 抗剪 二次受力 

分 类 号：TU375.1[建筑科学—结构工程]