玻璃钢/复合材料Issue(1)：45-49,5.
混凝土梁嵌粘混合FRP筋弯曲性能试验研究
FLEXURAL TESTS OF RC BEAMS STRENGTHENED WITH NEAR SURFACE MOUNTED MIXED FRP RODS
摘要
Abstract
Reinforced concrete beams were strengthened with near surface mounted (NSM) fiber reinforced polymer (FRP) rods into pre-cut grooves at the flexural zone and negative moment zone for simple supported beams and continuous RC beams.Flexural tests were monotonically carried out with NSM CFRP/BFRP hybrid rods under various initial loading.Experimental phenomena were recorded under loading levels such as crack width,typical loads,strains of steel bar/FRP rods and deformation.Test results show that flexural performances are increased for simple-supported and continuous RC beams strengthened with NSM hybrid FRP rods,especially for flexural capacity and normal stage performance.In comparison with RC beams with NSM single FRP rods,similar crack development and displacement ductility are better for beams with NSM hybrid rods.For test beams under initial loading,strengthen effect is slightly worse than beams without initial loading.External load is suggested to be removed as much as possible in field structure member.关键词
混凝土梁桥/表层嵌粘/混合FRP筋/弯曲性能Key words
RC bridge girder/NSM/hybrid FRP rods/flexural behavior分类
通用工业技术引用本文复制引用
王兴国,代波,张鹏飞..混凝土梁嵌粘混合FRP筋弯曲性能试验研究[J].玻璃钢/复合材料,2018,(1):45-49,5.基金项目
国家自然科学基金(51108161) （51108161）
河南省教育厅科研计划项目(2008A560004) （2008A560004）
