EXPERIMENT AND MODELING OF RC BEAMS SHEAR-STRENGTHENED WITH HYBRID-ANCHORED CFRP U-STRAPS

摘要：

　　To prevent the premature end-debonding of externally bonded fiber reinforced polymer(FRP)composite used for shear strengthening of reinforced concrete(RC)beams,this paper develops a new hybrid-anchoring system for FRP U-strap.Three specimens were tested to validate the feasibility of the hybrid-anchoring method and a three-dimensional finite element(FE)method was developed to simulate the shear behavior of strengthened beams.The results show that hybrid-anchoring shifts the end-debonding of CFRP to the rupture failure and greatly improve the fiber-strength utilization.It performs much better than the conventional method of externally bonding to improve strain behavior of steel stirrups and CFRPs and increase shear capacity of RC beam.The FE method accurately predictes the shear crak and capacity of the three beams,the strain behavior of steel stirrups and CFRPs,and debonding behavior of the interface between concrete and FRP.

关键词： Hybrid-anchoring CFRP RC beam shear strengthening FE modeling

作者: C.Y.Zhou J.Liu Y.N.Yu

作者单位: School of the Civil Engineering,Central South University,China

会议类型: 国际会议

会议名称: the Sixth Asia-Pacific Conference on FRP in Structures (APFIS2017)(第六届亚太纤维增强复合材料结构工程国际会议暨第十届全国建设工程FRP应用学术交流会)

会议地点: 新加坡

会议语种:英文

页码: 1-4

在线出版日期: 2017-07-19（万方平台首次上网日期，不代表论文的发表时间）