预应力FRP抗弯加固混凝土梁性能研究  

Performance research on the flexural properties of RC beams reinforced with prestressed FRP materials

作　　者：吴栋 张立伟[2] 景文俊[2] 

机构地区：[1]南京市建筑设计研究院有限责任公司,南京210005 [2]东南大学土木工程学院,南京210096

出　　处：《高科技纤维与应用》2013年第6期5-9,共5页Hi-Tech Fiber and Application

基　　金：国家高技术研究发展计划项目(2012AA03A204)

摘　　要：采用嵌入式CFPR筋和外贴碳/玄武岩纤维混杂布加固混凝土梁,设计比较了对加固材料施加预应力后的增强效果,共进行了6根梁的4点弯曲试验,并就计算结果和试验结果进行了验证,提出了设计方法。结果表明:相比于无预应力加固,施加预应力后能够进一步提升梁的开裂荷载和屈服荷载,并提高梁的服役性能。计算结果和试验结果比较吻合。The flexural performance of RC beams, which reinforced with NSM （Near-Surface-Mounted） CFRP bar and carbon-basalt hybrid fiber sheets, respectively, were investigated. In addition, the effects of prestress the FRP materials on the flexure properties were also studied. Six beams were constructed and tested using four- point bending test. And the calculation results and test results were compared, the design method were presented. Test results showed that the cracking loads and yielding loads of the prestressed beams were further improved compared to the non-prestressed beams, and their service performances were enhanced. The calculation results and test results is consistent.

关 键 词：混凝土梁 纤维增强复合材料 抗弯性能 预应力 嵌入式加固 

分 类 号：TU375.1[建筑科学—结构工程]